TUTORIAL
Contents
1. l lt a fe He gt Press OK to create the event and display the event editor Now we re ready to set up the first event gt Choose Set up fromthe menu bar and select Position Velocity The Buick is displayed at the earth fixed origin gt Click on the vehicle s X Y manipulator see Figure 5 10 wait for it to turn bright yellow indicating it has been selected and drag it to its impact position X 2 4 ft Y 75 ft Click the yaw manipulator and rotate it to its heading angle 90 degrees US NOTE Be sure to keep the mouse button depressed while you drag the manipulators EDHIS Creating the Events E eosmaca Buick vs Ford Jo e H gt gt 5 0000 0 0200 B 480a0T 9 9 0 0000 0 1000 Bet PositionVelocky Buick Skylark 1 Des X in 2 2400 na deg Y N 7500 Paeh deg PST METI GES CARE vinon 080 Pech degil wino O0 Yaw jdeghec Roy IT Zoom s _ l 25 8 Dolly NUM Rot Figure 5 10 Positioning the Buick Skylark using the manipulators IS NOTE Adjust the viewer by dollying back using the Dolly thumb wheel until you can see the entire intersection IRS NOTE To select the X Y manipulator the viewer must be in Pick mode as indicated by the highlighted arrow in the upper right corner of the viewer see Figure 5 10 US NOTE If you cant position the vehicle at the exact coordinates simply enter them in the dialog in fact it s often easier to directl2. 16 Key Results Variable Selection dialog used for selecting variables to be displayed in the Key Results window gt Select Force from the list gt Press OK to add the selected variables to the Key Results window Now we re ready to execute the event gt Using the Event Controller click Play to execute the event Allow the event to run until the vehicles separate t 0 20 sec We have finished our occupant simulation You may wish to view it a few more times by pressing Reverse and Play Note the time dependent results displayed in the Key Results windows You might also wish to add additional output variables to the Key Results window Occupant Simulation Tutorial Pedestrian Simulation Using EDHIS to simulate a pedestrian impact is very similar to the previous occupant simulation Let s proceed gt Click Add New Object The Event Information dialog is displayed gt Select Plymouth Voyager Van and the Female Adult Pedestrian from the Active Vehicles list and Active Humans list respectively gt Select EDHIS from the Calculation Methods options list gt Edit the event name Plymouth Pedestrian Impact gt Press OK to display the event editor Now let s set up and execute the pedestrian simulation event using EDHIS as shown in Figure 5 17 gt Using the Event Editor dialog select Plymouth Voyager Van from the Event Humans amp Vehicles list then select Set up from the menu bar and choose Positio
3. Make Plymouth e Model Voyager Year 1996 1999 Body Style Van gt Click OK to add Plymouth Voyager Van to the Active Vehicles list Now we have all the vehicles required for our case as shown in Figure 5 2 te Hia Gare the OSB Y lere Voyager van o lt gt gt aooo 9 0000 WoE A09 T K 2 U a lt a Le He Pone Roy ar Zoom sj oj o D RT Figure 5 2 cont Plymouth Voyager Van EDHIS Creating the Vehicles Editing the Vehicles Next we will edit the vehicles to change their color In addition we need to add contact surfaces to the Buick and Plymouth Van for the human simulations The contact surfaces are the physical surfaces that interact with the human ellipsoids to produce forces Let s start with the Buick This vehicle was struck from the rear and we wish to simulate its occupant during the low speed impact To edit the Buick perform the following steps gt First select the Buick Skylark 4 Dr from the Active Vehicles drop down list making it the current vehicle The Buick is now displayed in the Vehicle Editor Let s remove a portion of the vehicle exterior so we can see inside the vehicle more easily The HVE 3 D Editor was previously used to remove the passenger compartment and we saved the modified geometry file by the name PCBuickNoTop h3d To assign the modified geometry file gt Click on the CG and choose Geometry File Open The Drawing File S
4. Untitled with EDHIS Tutorial Case Sp NOTE The Case Title is displayed as a heading on all printed output reports gt In the Filename text field enter EdhisTutorial gt Click SAVE The current case data are saved in the hve supportFiles case subdirectory US NOTE Saving the file occasionally is a highly recommended practice Creating the Events Tutorial Creating the Events Weare going to perform two simulation studies one study is an occupant simulation of a low speed rear end collision and the other is a pedestrian impact Collision Simulation For the low speed rear end collision we need a collision pulse We can get the collision pulse directly using the EDSMAC4 collision simulator Rp NOTE if you dont have EDSMAC4 on your HVE system you may skip the EDSMAC4 event The collision pulse for this eventis shipped with HVE and may be loaded by selecting EdhisTutorialCollisionPulse from the Collision Pulse File Selection dialog gt Choose Event Mode The Event Editor is displayed gt Click on Add New Object The Event Information dialog is displayed gt Select Buick Skylark 4 Dr and the Ford F 150 Fleetside from the Active Vehicles list gt Select EDSMAC4 from the Calculation Method options list gt Enter a name for the event Buick vs Ford Rp NOTE HVE will append the name of the calculation method to the event name thus the complete event name will become EDSMAC4 Buick vs Ford
5. gt Press OK Variable Output report is printed on the system printer Thar s all there is to it You can print any other report using the same two steps described above US NOTE The Print dialog provides several options Refer to the Windows or Printer Users Manual for more information US NOTE For several reports it may be best to print in landscape rather than portrait mode US NOTE The font size of both the printed reports and screen display may be edited by clicking on the Options menu and choosing Preferences Use the Font Size option list to change the size
6. 0 3 0 23 0 2 0 23 0 3 0 1 0 3 0 3 0 2 0 21 0 3 0 2 0 Figure 5 4 Seat Bottom Seat Back and Head Rest contact surfaces EDHIS Creating the Vehicles Contact Surfaces Buick Skylark 4 Dr ME Contact Surface Seat Bottom lt Interior Vertex location Bind Material To Face Exterior C Group Comers Counter Clockwise First Middle Third Coordinates in x 23 00 3 00 3 00 y 3 00 3 00 23 00 2 1 00 l 2 00 2 00 Material Name Defaut Vehicle Material Add Delete Surface Material Cancel Figure 5 5 Contact Surface dialog To add the contact surfaces perform the following steps gt Click on the CG and choose Contact Surfaces The Contact Surfaces dialog is displayed see Figure 5 5 and we re ready to create the contact surfaces for the Buick gt Click Add and enter Seat Bottom followed by lt Fnter gt gt Interior is already selected as the default location to identify this contact as an interior contact surface gt Enter the coordinates Tor 3 corners of the seat bottom as shown in the table below Table 5 1 Seat Bottom Contact Surface Coordinates Corners Counter clockwise First Corner Middle Corner Third Corner X 23 0 3 0 3 0 y 3 0 3 0 23 0 Z 1 0 2 0 2 0 Creating the Vehicles Tutorial Rp NOTE Remember to enter three consecutive corners in counter clockwise order to establis
7. 0 26 672 0 0400 7 158 0 016 0 000 0 000 0 000 0 985 TR 0 0450 7 211 0 024 0 000 0 000 0000 4569 Figure 5 12 Collision Pulse dialog for Buick Skylark To attach the camera to the vehicle perform the following steps gt Choose Set Camera from the View menu The Set Camera dialog is displayed see Figure 5 13 gt Click the View From option list and choose Buick Skylark 4 Dr gt Enter the Camera Position coordinates x 0 y 20 z 0 l lt a fe He gt Enter the Camera Center coordinates x 0 y 0 z 0 gt Press OK The viewer displays the vehicle as viewed from the vehicle fixed coordinates 0 20 0 Now we re ready to position the driver in the Buick gt Select Male Adult Driver from the Event Humans amp Vehicles list then choose Position Velocity from the Set up menu The occupant is displayed at the vehicle fixed origin A set of manipulators is attached to the human to allow us to position him in the seat refer to Figure 5 14 US NOTE The Position Velocity dialog displays the current position and orientation of the human relative to the vehicle fixed coordinate system EDHIS Occupant Simulation Camera Setup 21x View From Hame ET ae Eel Camera Coordinates gt ft E 0 Y ft 2 ft Picture Center gt ft allt Z ft Depth of field Near ft Far ft Focal Length mm Figure 5 13 Set Camera dialog used for attaching the camera to t
8. 0 0 HUMAN ELLIPSOID PROPERTIES Center Coordinates Semiaxis Length Ellipsoid Ellipsoid Ellipsoid i i k i 5 K Number Nane Attached To tin in in tin tin in 0 Pelvis Torso 0 47 0 00 9 02 4 72 6 94 4 32 L Abdomen Torso 1 46 0 00 3 75 4 39 6 09 3 34 2 Chest Torso 0 00 0 00 4 31 4 83 6 45 7 12 3 Neck Head 0 48 0 00 1 18 2 40 2 40 4 38 4 Head Head 2 22 0 00 0 35 3 91 3 07 5 68 5 Rt Upper Leg Leg 0 52 0 33 0 00 11 75 3 05 3 05 6 Lt Upper Leg Leg 0 52 0 33 0 00 11 75 3 05 3 05 aimi pC Figure 5 22 Human Data Report for EDHIS Buick Occupant l lt a fe He To view the Human Data report for the DHIS Buick Occupant event perform the following steps gt Click Add New Object The Report Window Information dialog is displayed gt Select EDHIS Buick Occupant from the Active Events list gt Click on the Selected Output option list and choose Human Data gt Press OK The Human Data report is displayed for the EDHIS Buick Occupant event as shown in Figure 5 22 EDHIS Viewing Results Injury Data The Injury Data report displays the results of injury calculations that compare simulated tolerance levels with those specified for the human 4 Injury Data EDHIS Buick Occupant x INJURY TOLERANCES al User Assigned s Head Injury Criterion HIC 1000 Head Pitch Concussion deg sec 2 114591 6 Head Side Acceleration 91 46 0 Chest Force 1b 1800 0 Chest A P Acceleration
9. 0000 0 1000000 0 beMLMD 1 Seat Back 51 25 0 67 0 24 0 90 4 00 0 500 1000000 0 1000000 0 IW FRONT 2 Head Rest 51 25 0 67 0 24 0 00 4 00 9 500 1000000 0 1000000 0 IW FRONT VEHICLE CONTACT LOCATIONS Middle Corner Third Corner Firat Corner Contact Contact Tine x Y z x Y z x Y z Naber Mane sec in tin tin in fan an an an an 9 Seat Yottom 0 0000 3 00 3 00 2 00 3 00 23 00 2 00 23 00 3 00 1 00 1 Seat Dack 0 0000 21 00 23 00 2 00 20 00 23 00 10 50 21 00 3 00 2 00 2 Head Rest 0 0000 28 00 19 00 21 00 28 50 19 00 235 00 28 00 7 00 21 00 BELT RESTRAINT SYSTEM Wo Beita Inaralied AIRBAG RESTRAINT SYSTEM Wo Airbag Installed E U J gt Figure 5 24 Vehicle Data Report for EDHIS Buick Occupant To view the Vehicle Data report for the EDHIS Buick Occupant event perform the following steps l lt a fe od ke gt Click Add New Object The Report Window Information dialog is displayed gt Select EDHIS Buick Occupant from the Active Events list gt Click on the Selected Output option list and choose Vehicle Data gt Press OK The Vehicle Data report is displayed for the EDATS Buick Occupant event as shown in Figure 5 24 EDHIS Viewing Results Program Data The Program Data report displays the simulation controls and other program control information N Program Data EDHIS Buick Occupant P 4 GENERAL INFORMATION EDHIS Version Number 2 41 SIM
10. 2 KZU 997 SP UY EG 00 SIZ 17 EOL SEZ Ezk 097 00r rO Z 8E0Z 00 PLZ 17 SLL AA KZU Sge SE UY L 2602 00 Vez 92 EZE B82 KZU EA OE UY 99817 00 Soz GZ SEL 997 EZL viz S REUZ L0 9602 Pz KRL EBZ EZL RIZ 002 UY ZEIZ LY 9861 EZ KSL osz EZL 2 GSL UT 028991 LY ZS8L zz KSL Buz EZI A 07L UT P s3z6e D SEHE g1 eal gz EZL 4197 osoro SEES 00 6 009 El Lek Piz EZL L62 000 UY E 00 209 El CLL Eg EZL AA 0600 S2681 00 EIES ZL os A EZL 457 00600 ELESE 00 LESS UL LS Zee EZL SEZ 0800 2205 00 9195 oL AA LUZ EZI B62 00800 Z_98s 6ap 6 9as Bap 9as ul Gap ul ul ul Iy YOU 207 pin BAYOU BA PM4 youd z A x ass peat peay peat pest peat peat peay peau sul HO THY aep HO TnpY aew HO 1npY aep HO 1npY ae DO mpY SIS HO any ae HO Np y aew HO anp y aep Pass 1ugdnaa 42INg 61H 3 1nd1n0 ayqeue Viewing Results 5 43 EDHIS Viewing Results Trajectory Simulation The Trajectory Simulation provides a 3 dimensional visualization of the vehicle and occupant motion during the event S B H Traj Sim EDHIS Buick Occupant R A a A Kaj X _ 8 Rot Rov MTT Zoom _ gt 27 0 Dolly Figure 5 28 Trajectory Simulation for EDHIS Buick Occupant To view the Trajectory Simulation for the EDHIS Buick Occupant event perform the following steps gt Click Add New Object The Report Window Information dialog is displayed gt Select EDHIS Buick Occupant from the Active Events
11. 91 60 0 Chest Severity Index 917 25 0 Axial Femur Load lb 2250 0 Torso Belt Load combined lb 1900 0 Lap Belt Load combined 1b 1580 0 JOINT INJURY Maximum Range of Motion Neck Hip Yaw Pitch Roll Yaw Pitch Roll Flexion deg 40 0 40 0 30 0 75 0 120 0 45 0 Extension deg 40 0 20 0 30 0 PS0 30 0 45 0 PREDICTED INJURIES T start T end Duration Quantity Peak sec sec sec Head Pitch Concussion 144925 0 0 1040 0 1070 0 0030 X aimi Figure 5 23 Injury Data Report for EDHIS Buick Occupant To view the Injury Data report for the EDHIS Buick Occupant event perform the following steps gt Click Add New Object The Report Window Information dialog is displayed gt Select EDHIS Buick Occupant from the Active Events list gt Click on the Selected Output option list and choose Injury Data gt Press OK The Injury Data report is displayed for the EDHIS Buick Occupant event as shown in Figure 5 23 Viewing Results Tutorial Vehicle Data The Vehicle Data report displays the contact properties location and physical properties collision pulse and restraint systems parameters VEHICLE CONTACT PROPERTIES Elastic Constants Dasping Penten Haima tnlond Contact Contact Linear Quadratic Cubic Conse Mimie Edge Force Slope Direction Naber Wome Ib in lb in 2 1b in 3 1b see in in ranar ib tb 1n Facing U Seat Botton 54 25 0 67 0 24 9 90 4 00 9 500 100
12. Getting Started Tutorial EDHIS TUTORIAL Chapter This tutorial provides complete examples for two uses of EDHIS The first example is a low speed collision where the occupant motionis simulated inan effort to determine the potential for injury The second example is a pedestrian impact where the issue is the speed of the striking vehicle These examples illustrate common applications of EDHIS Like all EDHIS events the procedure involves the following basic steps Create the humans Create the vehicles l lt a fe He Create the environment Execute the EDHIS events e Review the EDHIS output reports This basic procedure is described in detail in this tutorial Rp NOTE It is assumed that HVE is up and running and that the useris familiar with HVE s basic features such as using H VES dialogs and viewers as well as the HVE Editors The purpose of this tutorial is to illustrate those features while setting up and executing an EDHIS event Getting Started As inother tutorials before we get started with our current tutorial let s set the user options so we re all starting on the same page EDHIS Creating the Humans IS NOTE Most options simply affect the appearance in a viewer during Event or Playback mode However some options affect the data used in the analysis For example if AutoPosition is On the vehicle position conforms to the local surface otherwise the position is set by th
13. Male Adult Driver Key Results window The Variable Selection dialog for Male Adult Driver is displayed Let s add Head Forward Acceleration and Head Pitch Acceleration to the Key Results window gt Click Kinematics Head The Variable Selection list for Head Kinematics is displayed gt Select Fwd Accel Forward Acceleration and Pitch Accel Pitch Acceleration from the list l lt x fe He Next let s add the Head vs Head Rest contact force gt Click Contacts and choose Head Head and Buick Skylark 4 Door Head Rest from the cascade menus The Variable Selection list for Head vs Head Rest contact is displayed see Figure 5 16 US NOTE The first time Head is displayed see Figure 5 16 it refers to the Head segment the second time refers to the contact ellipsoid named Head that is attached to the Head segment EDHIS Occupant Simulation Variable Selection EDHIS Buick Occupant Object Name Male Adult Driver z Current Variable Contacts Output Groups Variables Kinematics Left LowerArm Contact x Joints L5 51 Contact y Joints T12 L1 Contact z Joints C T1 Contact defl Joints Atlas Cont F tot Joints Right Hip Cont F norm Joints Hight Knee Cont F frict Joints Hight Ankle Joints Left Hip Joints Left Knee Joints Left Ankle Joints Right Shoulder Joints Right Elbow Joints Left Shoulder Joints Left Elbow Contacts Clear All Selections Clear Selection Canea Figure 5
14. OK to close the Combined Material Properties dialog l lt a fe He ke The pedestrian impact is now set up and ready to execute gt Using the Event Controller press P ay to execute the event Allow the event to run until the pedestrian rebounds from the collision and contacts the ground Sp NOTE EDHIS is design to simulate human occupant or pedestrian motion up to the point of first impact We should therefore terminate the event no later than 0 15 seconds We have now completed the three events EDHIS Viewing Results Viewing Results Now that we have produced our EDHIS simulations let s take a detailed look at the results The Playback Editor is used for reviewing and printing reports for each event in the current case as well as for producing video output IS NOTE The events simulated in this tutorial might be included along with the results from several other EDC Reconstruction and Simulation Model tutorials in the HVE User s Manual Tutorial Chapter 32 US NOTE In this tutorial we will only review the output reports produced by the EDHIS Buick Occupant event Feel free to view the EDSMAC4 and EDHIS Pedestrian events as well EDHIS produces the following reports Messages A list of messages produced by the current run Accident History A table of initial and final positions and velocities Event Data A table containing the collision pulse used in the EDHIS event Human Data A serie
15. ULATION CONTROLS Max Simulation Time sec 0 2500 Max Timestep sec 0 0005 Output Interval sec 0 0050 Starting Method Modified Runge Kutta Predictor Corrector Method Milne Hamming Velocity Change Limit 0 0000000 Acceleration Change Limit 0 0000000 Min Acceleration 0 0000000 Velocity Convergence Crit 0 1200 Maximum Bisections 12 Time Epsilon sec 0 000000100 K Figure 5 25 Program Data Report for EDHIS Buick Occupant To view the Program Data report for the EDHIS Buick Occupant event perform the following steps gt Click Add New Object The Report Window Information dialog is displayed gt Select EDHIS Buick Occupant from the Active Events list gt Click on the Se ected Output option list and choose Program Data gt Press OK The Program Data report is displayed for the EDATS Buick Occupant event as shown in Figure 5 25 Viewing Results Tutorial Variable Output To view the Variable Output report for the EDHIS Buick Occupant event perform the following steps gt Click Add Preview Window The Preview Window Information dialog is displayed gt Select EDHIS Buick Occupant from the Active Events list gt Click on the Selected Output option list and choose Variable Output gt Press OK The Variable Output report is displayed forthe EDHIS Buick Occupant event The table is initially empty so the next step is to select the time dependent results we wish to display in the t
16. able Variable Selection The purpose of our study is to determine the potential for head or neck injury so let s select head position and velocity and forward and pitch accelerations from the Kinematics output group Let s also add head vs headrest contact force from the Contacts output group To display these variables gt Click on Select Variables inthe Variable Output window The Variable Selection dialog is displayed gt Click on the Object Name option list and choose Male Adult Driver The Human Variable Groups list is displayed Let s add the Kinematics variables first gt Click Kinematics Head The Variable Selection list for Head Kinematics is displayed l lt a fe He gt Select x y z positions pitch orientation Fwd Velocity Pitch Velocity Fwd Acceleration and Pitch Acceleration from the list Next let s add the Head vs Head Rest contact force gt Click Contacts and choose Head Head Buick Skylark 4 Door and Head Rest from the cascade menus The Variable Selection list for Head vs Head Rest contact is displayed see Figure 5 26 EDHIS Viewing Results Variable Selection EDHIS Buick Occupant EQ Object Name Male Adult Driver lt Current Variable Contacts Output Groups Variables Joints Atlas Contact x Joints Right Hip Contact y Joints Right Knee Contact z oints Right Ankle Contact defl Joints Left Hip Cont F tot oints Left Knee Cont F norm Joint
17. are the events in this tutorial The Report Window Information dialog also includes the user editable Report Window Name text field and Selected Output option list gt Select the desired event name from the from the Active Events list gt Click on the Se ected Output option list and choose any of the available reports gt Press OK to display the report The selected report is displayed in a resizable window The following pages illustrate the reports produced for the EDHIS Buick Occupant event l lt a fe l d EDHIS Viewing Results Messages EDHIS produces several messages depending on the outcome of the event Foracomplete listing and explanation of these messages referto Chapter6 R Messages EDHIS Buick Occupant MESSAGES No Messages Figure 5 19 Messages Report for EDHIS Buick Occupant To view the reports produced by the EDHIS Buick Occupant event perform the following steps gt Click Add New Object The Report Window Information dialog is displayed gt Select EDHIS Buick Occupant from the Active Events list gt Click onthe Selected Output option list and choose Messages gt Press OK The Messages report is displayed for the EDHIS Buick Occupant event as shown in Figure 5 19 Viewing Results Tutorial Accident History The Accident History report displays the earth fixed positions and velocities for the three human segments and the vehicle at the start of t
18. bined Material Properties section click Select All Contact Interactions Male Adult Driver MB Object Male Adult Driver Buick Skylark 4 Door lt Source s Lt Lower Leg Lt Foot Rt Upp Ht L Lt Upper Arm Lt Lower Arm Select All Deselect All SelectAll Deselect All Combined Material Properties Segments Seat Bottom Seat Back For Multiple And MERGES Select l Deselect All Current Material Typical Seat OK Cancel Figure 5 15 Combined Material Properties dialog Occupant Simulation Tutorial gt Click Edit to edit the combined material properties gt Click Open to open a saved combined material property data set gt Double click on TypicalSeat mat1 to select it and close the dialog gt Click OK to accept the new material properties gt Click OK to accept the assigned contacts The contacts are now assigned and we are ready to proceed with executing the simulation Since our goal for this event is to study how the impact severity affects force and head acceleration let s look at some Key Results during execution gt If Key Results windows are not displayed choose Show Key Results from the Options menu gt Drag the Key Results windows to a convenient location where they do not block the view but still allow us access to the viewer thumb wheel controls in case we want to change the view gt Click on Select Variable in the
19. e Position Velocity dialog Obviously the resulting difference in initial conditions could substantially change the event US NOTE Some of the following options are Toggles that switch between two different modes Make sure these options are set correctly To set the initial user options choose the following from the Options Menu gt ON Show Key Results gt OFF Show Axes gt ON Show Contacts gt OFF Show Velocity Vectors gt ON Show Skidmarks gt OFF Show Targets gt ON AutoPosition gt Units equals US gt Render Options e Show Humans as Actual e Show Vehicles as Actual e Phong Render Method e Complexity equals Object e Render Quality equals 5 e Texture Quality equals e Anti aliasing equals 7 The remaining options will automatically initialize to their default conditions We re now ready to proceed with the tutorial Creating the Humans To create the humans for both events the occupant in the intersection collision and the pedestrian in the pedestrian impact perform the following steps gt If the HVE Human Editor is not the current editor choose Human Mode First let s add the human occupant to the case Creating the Humans Tutorial gt Click Add New Object The Human Information dialog is displayed The Human Information dialog includes option buttons allowing the user to select a seat position within the vehicle alternatively Pedestrian could be selected a
20. eetside inthe Active Vehicles list The vehicle is displayed in the viewer ready to edit gt Click on the CG and choose Color The Vehicle Color dialog is displayed showing the vehicle s current color in the color wheel and intensity in the intensity slider Click on hot spot in the color wheel and drag it to the middle of the green area Next darken the vehicle by dragging the intensity slider from the right end of the slider towards the middle Remember the color chip on the left shows the current color gt When the color of the Ford Pickup is to your liking press the Close button to apply the new vehicle color We now have all three vehicles required for the two simulation studies in this case Creating the Environment Tutorial Creating the Environment Now let s add the environment gt Choose Environment Mode The Environment Editor is displayed Let s use one of the sample environments shipped with HVE gt Click on Add New Object The Environment Information dialog is displayed gt Using the Location Database combo box choose Beaverton Oregon USA The latitude longitude and GMT hours from the prime meridian are displayed for the selected location gt Edit the date and time of the incident we are studying 4 22 96 and 1630 respectively gt Edit the angle from true north to the earth fixed X axis in our environment 56 degrees IS NOTE The Latitude Longitude GMT Date Time and angle
21. election dialog is displayed Double click on PCBuickNoTop h3d The vehicle is redisplayed with the new geometry file exposing the vehicle interior gt To change the vehicle s color from bright red to dark red click on the CG and choose Color The Vehicle Color dialog is displayed see Figure 5 3 showing the vehicle s current color the small black square in the color whee and intensity the arrow in the intensity slider Leave the color unchanged to darken the vehicle click on the intensity slider and drag it from the right end of the slider towards the middle US NOTE The color chip on the left shows the current color gt When the color is darkened to your liking press the Close button to apply the new vehicle color US NOTE The vehicle s apparent color may be slightly misleading because the vehicle is translucent when displayed in the Vehicle Editor The actual color will be used whenever the vehicle is displayed during Event and Playback mode Creating the Vehicles Tutorial Color Editor iil PH Edit Sliders Options Figure 5 3 Vehicle Color dialog used for assigning the vehicle color Next let s add the contact surfaces for the Buick We ll need a minimum of three surfaces for our simulation a seat bottom a seat back and a head rest as shown in Figure 5 4 28 5 19 0 25 0 28 0 19 0 21 0 28 0 23 0 18 5 28 0 7 0 21 0 l lt a fe He ke 21 0 23 0 2
22. ensity slider from the right end of the slider towards the middle l lt a fe He US NOTE The color chip on the left shows the current color gt When the color is to your liking press the C ose button to apply the new vehicle color To create the contact surfaces for the van perform the following steps gt Click on the CG and choose Contact Surfaces The Contact Surfaces dialog is displayed gt Click Add and enter Bumper followed by lt Enter gt Click on Exterior and enter the coordinates for 3 corners of the front end Table 5 4 following page EDHIS Creating the Vehicles Table 5 4 Plymouth Van Bumper Contact Surfaces Corners Counter clockwise Middle X 83 0 77 0 77 0 y 35 0 35 0 35 0 Z 7 0 15 0 15 0 Now let s create the Grille contact surface gt Again click Add and enter Grille followed by lt Enter gt Click on Exterior and enter the coordinates for three corners of the grille Table 5 5 Plymouth Van Grille Contact Surface Coordinates Corners Counter clockwise First Corner Middle Corner Third Corner X 83 0 83 0 77 0 y 35 0 35 0 35 0 Z 7 0 7 0 4 0 Now let s create the Hood contact surface gt Again click Add and enter Hood followed by lt Enter gt Click on Exterior and enter the coordinates for three corners of the hood Table 5 6 following page The last contact su
23. eport for EDH S Buick Occupant To view the Event Data report forthe EDHIS Buick Occupant event perform the following steps gt Click Add New Object The Report Window Information dialog is displayed gt Select EDHIS Buick Occupant from the Active Events list gt Click on the Se ected Output option list and choose Event Data gt Press OK The Event Data report is displayed for the EDHIS Buick Occupant event as shown in Figure 5 21 Viewing Results Tutorial Human Data The Human Data report displays the human segment and joint properties as well as the human contact ellipsoid information Human Data EDHIS Buick Occupant B HUMAN SEGMENT PROPERTIES Moments of Inertia Joint Locations Segment Segment Mass Weight i Axis j axis k axis CG to Lower Joint CG to Upper Joint Nunber Nane ilb sec 2 in ilb lb sec 2 in lb sec 2 in 1b sec 2 in tin lin 0 Torso 0 2144 82 8 12 2434 10 9569 4 0090 9 65 11 44 2 Head 0 0299 11 5 0 4011 0 4297 0 1571 5 03 2 Leg 0 1621 62 6 0 8882 3 9840 3 82280 7 55 HUMAN JOINT PROPERTIES Joint Elasticity Stop Elasticity 9 Damping Stop Angles Joint Joint Yaw Pitch Roll Yaw Pitch Pitch Roll Yaw Pitch Roll Yav Pitch Pitch Roll Num Name 0 Neck 0 0 0 0 0 0 2000 0 2000 0 2000 0 2000 0 0 1 0 1 0 1 35 0 35 0 15 0 25 0 1 Hip 0 0 O 2000 0 2000 0 2000 0 2000 0 0 1 0 1 0 1 70 0 115 0 25 0 4
24. from true north are used to position the sun in the scene This is of course important because the sun is the primary light source for the scene gt To add the environment geometry file to our case click on Open The Environment Geometry File Selection dialog is displayed gt Click onthe File of Type option list and choose 43d Files A list of environment geometry files using the HVE file format is displayed in a list box gt Double click on 274 Intersection h3d to choose the environment file and remove the dialog gt Press OK l lt a fe He The selected environment is added to our case and displayed in the Environment Viewer see Figure 5 9 Use the viewer thumb wheels to view the scene EDHIS Saving the Case HVE EDGEN Tutorial Vtr Study EdgenT utoriol hve Fle Ya View Mode Sep 3DEGt Option Heb Deg amp L E School Bus Stop Sl ie lt gt gt 0 0000 0 0000 Iela Z 67 A80 Tr 9 U 0 0000 0 0000 Rore Roy R Zoom s _ gt 27 0 Doty nu Figure 5 9 3 D Environment used for our tutorial Saving the Case Now that we ve created all the objects humans vehicles and environment for our case let s save the case file gt Click on the File menu and choose Save The Save as File Selection dialog is displayed Rp NOTE The Save as dialog is displayed because the case has not been saved previously so we need to enter a filename gt In the Case Title text field replace
25. h the positive side of the surface US NOTE The order is important If we enter the coordinates in the wrong order no force will be produced between the human and vehicle Rp NOTE You can tab between fields in this dialog making it quicker to enter the coordinate data The Seat Bottom contact surface is complete Next let s create a contact surface for the seat back gt Again click ddd and enter Seat Back followed by lt Enter gt Interior is already selected Enter the coordinates for three corners of the seat back Table 5 2 Table 5 2 Seat Back Contact Surface Coordinates Corners Counter clockwise Middle Third Corner x 21 0 21 0 28 0 y 3 0 23 0 23 0 a 2 z 2 0 2 0 18 5 O Finally let s create a contact surface for the head rest gt Again click ddd and enter Head Rest followed by lt Enter gt Interior is already selected Enter the coordinates for three corners of the head rest Table 5 3 Table 5 3 Head Rest Contact Surface Coordinates Corners Counter clockwise Middle X 28 0 28 0 28 5 y 7 0 19 0 19 0 Z 21 0 21 0 25 0 EDHIS Creating the Vehicles De Ea tee peun WSI or A O8T K 2 hep Roy E ap Zoom sj _ aso Doty wa Figure 5 6 Buick Skylark 4 Dr after adding contact surfaces for the seat and headrest gt Click OK to remove the Contact Surface dial
26. he Event Controller click Play to execute the event Allow the event to run until just after the vehicles separate t 0 20 sec Then press Pause Stop to end the event The EDSMAC4 event is shown in Figure 5 11 IRS NOTE While the event is executing watch the current results especially acceleration in Key Results windows EDHIS Occupant Simulation Occupant Simulation The EDSMAC4 event has provided us with the collision pulse now let s use EDHIS to study the driver s behavior during impact gt Select Add New Object The Event Information dialog is displayed gt Select Buick Skylark 4 Dr and the Male Adult Driver from the Active Vehicles list and Active Human list respectively gt Select EDHIS from the Calculation Methods options list gt Entera name forthe first EDHIS event Buick Occupant gt Press OK to display the event editor Now let s set up and execute the occupant simulation event using EDHIS gt Using the Event Editor dialog select Buick Skylark 4 Dr from the Event Humans amp Vehicles list then select Set up from the menu bar and choose Position Velocity The Buick is displayed at the earth fixed origin gt Use the Position Velocity dialog to assign the same initial position as the one used in the previous EDSMAC4 event X 24 ft Y 75 ft and heading 90 deg US NOTE Be sure to press lt Enter gt to apply the values displayed in the Position Velocity dialog gt Click the Velocit
27. he run 4 Accident History EDHIS Buick Occupant x INITIAL CONDITIONS Lb L Vehicle Torso Head Legs Position Velocity Position Velocity Position Velocity Position Velocity Linear tin mph in mph in mph in mph x 288 00 0 00 275 25 0 00 275 56 0 00 275 08 0 00 Y 900 00 0 00 921 18 0 00 928 75 0 00 908 73 0 00 z 23 74 0 00 35 86 0 00 50 42 0 00 27 62 0 00 Position Velocity Position Velocity Position Velocity Position Velocity Angular ideg deg sec ideg deg sec deg deg sec deg deg sec Yaw 90 00 0 00 89 31 0 00 89 56 0 00 90 00 0 00 Pitch 0 53 0 00 30 52 0 00 20 53 0 00 0 53 0 00 Roll 119 0 00 1739 0 00 1 27 0 00 1 19 0 00 E L Be Figure 5 20 Accident History Report for EDH S Buick Occupant To view the Accident History report for the EDHIS Buick Occupant event perform the following steps gt Click Add New Object The Report Window Information dialog is displayed gt Select EDHIS Buick Occupant from the Active Events list gt Click on the Se ected Output option list and choose Accident History gt Press OK l lt oa fe od The Accident History report is displayed for the EDHIS Buick Occupant event as shown in Figure 5 20 US NOTE The Accident History report and several other reports contain more information than fits into the default window size Use the scroll bars or resize the dialog t
28. he vehicle and setting the view TIX m ioe Sa ben Be ee dl lt H gt 02500 00RS Zoom sj 27 0 Deity a ie Figure 5 14 Human manipulators used for positioning the human 5 24 Occupant Simulation Tutorial To position the occupant let s first use the x y plane manipulator to position the human over the middle of the seat at x 17 in y 13 in gt Click on the x y plane manipulator a white horizontal plane through the human s pelvis segment and drag the human to x 17 y 13 then release the mouse US NOTE You may wish to use the rotX thumb wheel to get a better view of the human relative to the seat IS NOTE If the human is not located exactly at 17 13 you can enter the values directly in the Position Velocity dialog Use the z manipulator a white rod along the human s z axis to set the elevation gt Click onthe z manipulator and drag the human up to 5 inches again you may use the dialog to enter the exact value Next we ll use the pitch manipulator to lean the occupant back in the seat gt Click on the purple pitch band and drag the human tilting him back until the pitch equals 30 degrees IS Again you may wish to use the rotX and rotY thumb wheels to gain a better view You might also want to rotate the scene to get a better angle on the pitch manipulator band in order to select it l lt a fe He Now the human is seated properly but his legs pro
29. list gt Click on the Selected Output option list and choose Trajectory Simulation gt Press OK The Trajectory Simulation viewer is displayed forthe EDHIS Buick Occupant event see Figure 5 28 The human and vehicle are shown at their initial positions EDHIS Viewing Results To visualize the motion perform the following steps gt Click P ay single right arrow The simulation begins and is displayed at the current Playback output interval gt Click Pause The simulation stops gt Click Reverse single left arrow The simulation plays in reverse gt Click Pause The simulation stops gt Click Rewind left arrow with bar The simulation returns to the start gt Click Advance to End right arrow with bar the simulation advances to the end of the run l lt a fe He EDHIS Viewing Results Printing The final step is to print the above reports Printing reports is simple All youdo is choose a report and print it For example gt Click the dialog header for Variable Output EDHIS Buick Occupant The dialog header is highlighted and the Variable Output window pops to the top of the display if it isn t there already indicating it is the current window gt Click on the File menu and choose Print The Print dialog is displayed allowing the user to select from several available options Rp NOTE Alternatively you can click on the print icon in the upper menu bar
30. n Velocity The Plymouth Van is displayed at the earth fixed origin Drag the vehicle to its impact position X 20 ft Y 37 ft Yaw 0 degrees gt Click the Velocity Is Assigned check box Enter the Plymouth Van s impact speed 35 mph Next position the pedestrian gt Select Female Adult Pedestrian from the Event Humans amp Vehicles list then select Set up from the menu bar and choose Position Velocity The human is displayed at the earth fixed origin l lt x fe He IS NOTE The human is half buried in the environment this occurs because AutoPosition does not apply to humans gt Use the Position Velocity dialog to enterthe impactpositionof the human relative to the earth fixed coordinate system 10 ft Y 37 ft Z 3 5 ft Yaw 90 degrees IS NOTE Be sure to press lt Enter gt otherwise the entered values do not take effect EDHIS Occupant Simulation M P E RIDE PrymouhPedectrinn impacts K lt i1 gt gt 10000 0 0025 U ASOoT amp 9 8 0009 9 0058 Rote Roy E 3 sal Jah 2 i Figure 5 17 Setting up the EDHIS Pedestrian Impact simulation Now let s enter the initial velocity of the pedestrian gt Click on the Velocity Is Assigned checkbox and enter the velocity 4 mph The final step in the event set up is to set up contacts and assign combined material property data for the human ellipsoid to contact surface interactions Let s start with the Bumper gt Ifthe Female is
31. nd assign the human s attributes according to Sex Age Weight Percentile and Height Percentile gt Using these option buttons click each button to choose the following human attributes e Location Front Left i e driver IS NOTE By definition we must choose sides here Were going to assign the drivers position to the left side of the vehicle sorry to our friends in Great Britain Australia and other countries whose drivers are stuck on the wrong side of the vehicle e Sex Male e Age Adult Weight Percentile 50 Height Percentile 50 gt Edit the default human name Male Adult Driver gt Click OK to add Male Adult Driver to the Active Humans list Now let s add the female pedestrian gt Click Add New Object The Human Information dialog is displayed gt Click onthe optionbuttons in the Human Information dialog to choose the following human attributes Location Pedestrian Sex Female Age Adult e Weight Percentile 50 Height Percentile 97 5 gt Edit the default name Female Adult Pedestrian gt Click OK to add Female Adult Pedestrian to the Active Humans list l lt a fe He Rp NOTE By choosing Pedestrian HVE will define the human s motion relative to the earth fixed coordinate system occupant motion is defined relative to the vehicle fixed coordinate system After the above steps are performed both humans have been added to the case and are read
32. nger Car e Make Buick Model Skylark Year 1985 199 Body Style 4 Door gt Click OK to add Buick Skylark 4 Dr to the Active Vehicles list Now let s add the 1989 Ford F 150 pickup gt Click Add New Object The Vehicle Information dialog is displayed gt Click on the option buttons in the Vehicle Information dialog to choose the second vehicle according to the following attributes e Type Pickup e Make Ford Model F 50 Year 1988 199 e Body Style Fleetside gt Click OK to add Ford F 150 Fleetside to the Active Vehicles list l lt a fe He EDHIS Creating the Vehicles f La Yew Made See 19L Oam He osu P E pula Sitar er SG r i gt gt 0000 8 0000 Molor A09 Tx 9 n eooo 9 0000 hats Roty E smn Zoom s _ 45 0 Doty nm e a ye Made See JOUS Bern io DSU E rora His0 rieetsise Sen i gt gt Snn onon rh U Ned Se AS Aa T 8 0000 0 0000 Rot Roty E zat Zoom s _ 9 45 0 Doty ne Figure 5 2 Buick Skylark 4 Dr above and Ford F 150 Fleetside below 5 6 Creating the Vehicles Tutorial Finally let s add the aqua blue 1997 Plymouth Van to the case The Plymouth Van was involved in the pedestrian impact gt Click Add New Object The Vehicle Information dialog is displayed gt Click on the option buttons in the Vehicle Information dialog to choose the following vehicle from the database Type Van e
33. not currently selected in the Event Humans and Vehicles list click on it making it the current object gt Choose Contacts from the Set up Menu gt Under the Objects list click Select All gt Under the Targets list click Select All gt Below in the Combined Material Properties section first select Bumper gt Click Edit to edit the combined material properties gt Click Open to open a saved combined material property data set Occupant Simulation Tutorial gt Double click on TypicalRoofPillar matL to select it and close the dialog gt Click OK to accept the new material properties The Grille and Hood have the same material properties so we will assign them together gt Click on Bumper to deselect it and click on both Grille and Hood to select them gt Click Edit to edit the combined material properties gt Click Open to open a saved combined material property data set gt Double click on TypicalDoorUndamaged matl to select it and close the dialog gt Click OK to accept the new material properties Finally we assign the material properties for the Female to Windshield contact gt Click on both Grille and Hood to deselect them and click on Windshield to select it gt Click Edit to edit the combined material properties gt Click Open to open a saved combined material property data set gt Double click on TypicalWindshield mat1 to select it and close the dialog gt Click
34. o view the entire report EDHIS Viewing Results Event Data The Event Data report displays the acceleration pulse used inthe EDHIS event E COLLISION PULSE mi Time x Y zZ yaw pitch roll sec g g ig deg sec 2 deg sec 2 deg sec 2 0 0000 0 02 0 01 0 00 0 00 0 00 0 00 0 0100 0 07 3 79 0 04 59 90 0 00 0 00 0 0110 0 16 4 06 0 03 96 64 0 00 0 00 0 0150 0 01 5 57 0 05 35 44 0 00 0 00 0 0200 0 02 6 09 0 06 35 42 0 00 0 00 0 0250 0 03 6 50 0 06 35 47 0 00 0 00 0 0300 0 01 6 81 0 06 24 47 0 00 0 00 0 0350 0 03 7 19 0 07 30 79 0 00 0 00 0 0400 0 03 7 45 0 07 3 32 0 00 0 00 0 0450 0 04 7 50 0 07 13 09 0 00 0 00 0 0500 0 02 7 22 0 07 0 18 0 00 0 00 0 0550 0 02 6 73 0 06 1 66 0 00 0 00 0 0600 0 01 6 75 0 06 7 94 0 00 0 00 0 0650 0 02 4 86 0 05 28 82 0 00 0 00 0 0700 0 00 1 04 0 01 8 37 0 00 0 00 0 0750 0 00 0 01 0 00 2 85 0 00 0 00 0 0800 0 00 0 01 0 00 2 54 0 00 0 00 0 0900 0 00 0 01 0 00 2 02 0 00 0 00 0 1000 0 00 0 01 0 00 1 61 0 00 0 00 0 1100 0 00 0 01 0 00 1 28 0 00 0 00 0 1200 0 00 0 00 0 00 1 02 0 00 0 00 0 1300 0 00 0 00 0 00 0 81 0 00 0 00 0 1400 0 00 0 00 0 00 0 64 0 00 0 00 0 1500 0 00 0 00 0 00 0 51 0 00 0 00 0 1600 0 00 0 00 0 00 0 40 0 00 0 00 0 1700 0 00 0 00 0 00 0 32 0 00 0 00 0 1800 0 00 0 00 0 00 0 25 0 00 0 00 0 1900 0 00 0 00 0 00 0 20 0 00 0 00 0 2000 0 00 0 00 0 00 0 16 0 00 0 00 0 2500 0 00 0 00 0 00 0 16 0 00 0 00 lt Figure 5 21 Event Data R
35. og The Buick is displayed with it s the surfaces as shown in Figure 5 6 US NOTE if the contact surfaces are not displayed choose Options in the main menu bar and click on Show Contacts Using the viewer thumb wheels rotate the vehicle and look at each side of the surfaces Note the contact side is light colored i e the positive side while the other side is dark Now let s change the color of the Plymouth Van and add Bumper Grill Hood and Windshield contacts to its exterior see Figure 5 7 These contact surfaces will be used for the pedestrian impact simulation To change the vehicle s color from red to blue perform the following steps gt Select the Plymouth Voyager Van from the Active Vehicles drop down list making it the current vehicle The vehicle is displayed in the viewer ready to edit 5 12 Creating the Vehicles Tutorial 10 0 35 0 33 0 40 0 35 0 16 0 77 0 35 0 4 0 40 0 35 0 16 0 83 0 35 0 7 0 77 0 35 0 15 0 77 0 35 0 4 0 83 0 35 0 7 0 Bumper 77 0 35 0 15 0 Figure 5 7 Bumper Grille Hood and Windshield contact surfaces gt Click onthe CG and choose Color The Vehicle Color dialog is displayed showing the vehicle s current color in the color wheel and intensity in the intensity slider Click on the hot spot the small black square in the color wheel and drag it to the middle of the blue area Next darken the vehicle slightly by dragging the int
36. rface for the Plymouth Van is the Windshield gt Again click Add and enter Windshield followed by lt Enter gt Click on Exterior and enter the coordinates for three corners of the windshield Table 5 7 following page gt Click OK to remove the Contact Surface dialog The vehicle is displayed with it s the surfaces as shown in Figure 5 8 Creating the Vehicles Table 5 6 Plymouth Van Hood Contact Surface Coordinates Corners Counter clockwise Middle Corner Third Corner X 40 0 77 0 77 0 y 35 0 35 0 35 0 Z 16 0 4 0 4 0 Table 5 7 Plymouth Van Windshield Contact Surface Coordinates Corners Counter clockwise First Corner Middle Corn Third Corner X 40 0 40 0 10 0 y 35 0 35 0 35 0 Z 16 0 16 0 33 0 tE ind rested fie Et Yow Mote Sere ELE Ge E ofa P E lma Voyager vos ou 6 gt ooo somo ts U 1 8500 000 Regte A509T a lt DC Le He ner noy pean Zems af 8 p J Figure 5 8 Plymouth Van after adding the Bumper Grille Hood and Windshield contact surfaces 5 15 EDHIS Again use the viewer thumb wheels to rotate the vehicle and look at each side of the surfaces Note the contact side is light colored i c the positive side while the other side is dark Finally let s change the color of the Ford pickup from red to forest green gt Click on Ford F 150 Fl
37. s Left Ankle Cont F frict Joints Right Shoulder Joints Right Elbow Joints Left Shoulder oints Left Elbow Pelvis Abdomen L Chest gt Neck gt Buick Skylark 4 Door gt Seat Bottom Rt Upper Leg gt Male Adult Driver Seat Back RtLowerLeg gt a Head Rest Rt Foot gt Lt Upper Leg gt Lt Lower Leg gt E L L E L Lt Foot Rt Upper Arm Rt Lower Arm Lt Upper Arm Lt Lower Arm Figure 5 26 Variable Selection dialog used for selecting the results displayed in the Output Report US NOTE The first time Head is displayed see Figure 5 26 it refers to the Head segment the second time refers to the ellipsoid named Head that is attached to the Head segment gt Select Cont F tot total contact force from the variable list gt Press OK to add the selected variables to the Variable Output window The Variable Output report for the EDATS Buick Occupant now includes Forward and Pitch Head Accelerations and the contact force between the headrest and head as shown in Figure 5 27 Feel free to use the above steps to add additional parameters to the variable output table and view the results TWIYOLN L synseal papaes BulAeydsip juedno00 yoIng SIH 40 Yodel indino eqeueA 17 06 aniy E pam 2 Z SBEPL oo SESZ 82 ve VIE ezr LER osato LPZSL 00 982 62 Br E ZL ZZ 00310 SEBS 00 KRIZ 62 E9 SOE szer A S 1 269 00 zoz 8z ie ZOE ZL LSZ 00st 0 Et88L 00 HES 82 06 B6
38. s of tables containing the human data used by EDHIS Injury Data A table containing the injury tolerances followed by a table containing values exceeding the allowable tolerances during the event Vehicle Data A series of tables containing the vehicle data used by EDHIS Program Data A table containing program control information Variable Output A table containing time dependent simulation results Trajectory Simulation A 3 D visualization of the event displayed at a user selectable time interval To view the output reports we need to be in Playback mode gt Choose Playback Mode The Playback Editor is displayed Viewing Results Tutorial Report Windows The reports listed on the previous page are displayed by selecting Report Windows Each Report Window contains an individual report Report Window 21x Active Events EDSMAC4 Buick vs Ford EDHIS Buick Occupant EDHIS Plymouth Pedestrian Window Name EDHIS Buick Occupant Select Output Accident History z Cancel Figure 5 18 Report Window Information dialog showing the events one EDSMAC4 and two EDHIS in the current case To view the reports produced by the DHIS Tutorial Case perform the following steps gt Click Add New Object The Report Window Information dialog is displayed as shown in Figure 5 18 and includes a list of the active events EDSMA C4 Buick vs Ford EDHIS Buick Occupant and EDHIS Ford Pedestrian Impact
39. trude throughthe floorboard we won t make the obvious comment Let s position the legs gt Click on the lower left leg The orientation manipulators are displayed gt Click on the pitch manipulator and drag the leg until the pitch angle is 30 0 degrees gt Repeat the above two steps to position the lower right leg The human is now properly positioned in the seat The last step in positioning is to assign an initial velocity gt Click on the human pelvis segment in order to select it IS NOTE We must select the pelvis which is the main segment in order to assign an initial velocity to the human otherwise we would have simply assigned an initial velocity to the lower left leg EDHIS Occupant Simulation gt Click the Velocity Is Assigned checkbox in the Position Velocity dialog and enter a forward velocity of 0 mph Rp NOTE Because the human is defined as an occupant as opposed to a pedestrian the initial velocity is defined relative to the vehicle The final step in the event set up is to set up contacts and assign combined material property data for the human ellipsoid to contact surface interactions gt Ifthe Male is not currently selected in the Event Humans and Vehicles list click on it making it the current object gt Choose Contacts from the Set up Menu Figure 5 15 gt Under the Objects list click Select All gt Under the Targets list click Select All gt Below in the Com
40. y Is Assigned check box Leave the value assigned at 0 mph gt Choose Collision Pulse from the Set up menu The collision pulse dialog is displayed see Figure 5 12 Click on the Pulse Data Source option list and choose EDSMAC4 Buick vs Ford The collision pulse acceleration vs time history for the Buick Skylark during the low speed impact is displayed numerically in a user editable table and graphically gt Press OK to accept the collision pulse Before we position the human we ll attach the camera to the vehicle US NOTE This tip really helps while positioning occupants because it allows you to move the camera relative to the vehicle thus you can quickly focus on the interaction between the human and the seat cushion an important part of placing the human in an equilibrium position Occupant Simulation Tutorial Collision Pulse Buick Skylark 4 Door HB Total Acceleration vs Time oS 8 00 S 6 00 w 400 a LZ lt 200 G F 0 00 0 0000 0 0525 0 1050 0 1575 0 2100 Time sec Pulse Type Acceleration S Apply Yaw Print 0 009 0 021 0 000 0 000 Factors 0 0100 3 789 0 068 0 000 0 000 0 000 58 578 0 0110 4 069 0 170 0 000 0 000 0000 100511 New 0 0150 5288 0 035 0 000 0 000 0 000 13995 0 0200 58934 0 075 0 000 0 000 0 000 64 086 __ Open 0 0250 6 382 0 087 0 000 0 000 0000 70 252 0 0300 6720 0 08 0 000 0 000 0 000 24 533 Save As 0 0350 6 935 0 061 0 000 0 000 000
41. y enter the coordinates using the dialog gt Click the Velocity Is Assigned checkbox Since it was stopped at impact leave the value assigned at 0 mph Event set up for the Buick is now complete Let s set up the Ford pickup gt Select Ford F 150 Fleetside inthe Event Humans amp Vehicles list then choose Position Velocity from the Set up menu The Ford is displayed at the earth fixed origin Drag it to its impact position X 24 ft Y 91 ft Yaw 90 degrees Click Velocity Is Assigned and enter an initial velocity of 10 mph Creating the Events Tutorial OSM RO E cosmaca Buick vs Fors OK lt n gt Sooo ooz00 2 7 0 0350 0 0050 le kad PRAE asaeoatrre Dere 19 w Zoom j _ Wl 27 0 Dany n Figure 5 11 HVE Event Editor executing the EDSMAC4 Event gt Choose Simulation Controls from the Options menu and change the Output Time Interval from 0 1 sec to 0 005 sec Click OK to accept the change 3 lt a Le He IS NOTE We reduced the output interval because we re going to use the acceleration output from this simulation as the collision pulse for our occupant simulation so we want more detail selecting the smaller output interval provides the acceleration at 0 005 second increments rather than the default value 0 7 second Note the entire duration of a collision is only about 0 1 second so the default interval might actually skip the entire collision gt Using t
42. y to be analyzed EDHIS Creating the Humans L s iaae Bi gt E E gt La Yow ade Sete HiS Bern He joe P E Mote Adur Driver jox s n gt gt apoo onoo leoGDerasaetoatTre U 60000 Rote Rony RR r 4 Tag NN Ee La Yow R Sete QES Wn tin oem P E romale Adun Pedestrian zjx lt n gt aooo anoo Boo A59 9 n 8 800 0 0000 a r L E R 7 E T Robe Roy E Zoom J sf en ooy NN Figure 5 1 Male Adult Driver above and Female Adult Pedestrian below ready for analysis 5 4 Creating the Vehicles Tutorial Creating the Vehicles Now we have our humans so let s add the vehicles First let s add the two vehicles involved in a low speed rear end collision One vehicle is a dark red 1991 Buick Skylark and the second is a forest green 1989 Ford F 150 Pickup gt Choose Vehicle Mode The Vehicle Editor is displayed gt Click Add New Object The Vehicle Information dialog is displayed The Vehicle Information dialog allows the user to select the basic vehicle attributes according to Type Make Model Year and Body Style US NOTE The Vehicle information dialog also allows you to edit the Driver Location Engine Location Number of Axles and Drive Axle s These options affect the basic vehicle configuration and do not need to be changed for our tutorial gt Using the option buttons click each button to choose the following vehicle from the database Type Passe
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