Software Update - Version 5.20
Contents
1. above Program File Contents Due to a number of problems associated with transmission of zip and tar files over the internet the scheduled updates are distributed on a CD in normal data format The files may be easily extracted from this disk on any computer system and then transferred to appropriate system for which ADORE is licensed for Temporary fixes during the subscription period of annual ADORE update service shall continue to be distributed electronically as needed The media may contain up to four subdirectories as listed below Disk1 Update52 pdf A pdf file containing notes of the latest updates this file adoreInput txt A text file containing details of ADORE input data adoreManual pdf ADORE user s manual containing detailed instructions for program installation and use Ball Subdirectory containing ball bearing test case ADORE Update 5 2 Page 3 of 6 Roller Subdirectory containing roller bearing test case Disk2 f files ADORE FORTRAN 90 source files Makefile Make file to create ADORE executable on IBM AIX systems Disk3 Supplied only with license to optional Java facilities adrJavFacDoc pdf User instructions for installation of Java input and plot facilities adrInput and adrPlot setup bat Setup batch file to compile adrInput and adrPlot on Windows system adrInput bat Batch file to execute adrInput adrPlot bat Batch file to execute adrPlot java Java source codes for adr2. 4 USA Phone 518 383 1167 Fax 518 371 3833 Web www PradeepKGuptaInc com Email guptap PradeepKGuptalInc com ADORE Update 5 2 Page 6 of 6
3. ADORE Update to Version 5 2 Release Date October 15 2004 ADORE 5 2 is a revision to version 5 1 In addition to all temporary fixes 5 1x during period July 15 2003 to October 15 2004 this version includes program enhancements developed over the last year Program Enhancements Visco Elastic Traction Model The visco elastic traction model has been finally incorporated in version 5 2 However the input parameters such as lubricant shear modulus critical shear and viscosity behavior in the high pressure region are user inputs since much of this data is not routinely available These properties are generally derived by regression analysis of experimental traction data As an example the available traction data for the MIL L 7808 type lubricant was analyzed to estimate these proper ties The results are added to the ADORE data base under traction code kTrac 8 on record 10 0 The arbitrary model code is now 9 on this record In the past bearing performance simulations over a wide range of operating conditions demonstrated little difference between the simplified Newtonian and the more complex visco elastic models Thus the Newtonian model was always used With the recent demand of very high rolling velocities and contact pressures the Newtonian model which predicts a very high and steep traction peak under such conditions results in certain instabilities for which there is little or no experimental support On the contrary with the more co
4. Input and AdrPlot Disk4 Supplied only with license to optional graphic animation facility AGORE agore c The C language source code for AGORE sol8b dat Ball bearing graphics animation test file generated by ADORE sol8r dat Roller bearing graphics animation test file generated by ADORE Program Installation The installation procedure presented below is primarily for IBM RS 6000 system operat ing under the AIX 4 3 operating system For other systems appropriate changes to the compilation command will have to be made ADORE Update 5 2 Page 4 of 6 ADORE Installation of ADORE is simply accomplished by executing the makefile supplied in the Adore source directory Copy all files from the Disk2 directory to appropriate directory on the hard disk and then on an IBM system issue the command make This will create an executable file adore which could be installed in appropriate directory consistent with the user environment On non IBM system simply edit the make file to include appropriate compiler command instead of the xlf90 used on IBM system Note that the option c and qmixed respectively mean that at this step perform compilation only and that the variable names use mixed both lower and upper case characters The option qmixed is not absolutely essential for program operation it is convenient during program development and debugging On the Windows system if the Microsoft Developer Studio is used to create t
5. a constant stiffness to compute an initial value of the contact force at the roller to outer race contact Although this approximation worked for most bearings bearings with certain geometry demonstrated convergence problems while solving for the equilibrium solution The contact stiffness is now computed with the current ADORE Update 5 2 Page of 6 load and geometry This enhancement not only solved the convergence problems but it provided significant improvements to the overall rate of convergence for all bearings Subroutine Adrb20 This subroutine provided series expansion of the sine and cosine functions to improve accuracy However when the angles are close to 27 although the expansion is still valid the series results in error due to relatively large argument To resolve this issue the accuracy of the intrinsic sine and cosine functions was tested with the specified accuracy and it was found that in view of the prescribed accuracy the series expansion is not really necessary Thus the subroutine Adrb20 is now eliminated Roller Flange Interaction The roller corner and race flange interaction module is modified to implement interaction at flange ends when the point of minimum interaction point if out of the available flange area Ear lier the flange contact was ignored when the point of minimum interaction was out of range of the available flange area Roller Bearings with Arbitrary Cage Pockets In order to further generalized s
6. f based input facility and the PHIGS based plot facility are now discontinued The newly developed Java facilities may be more universally used on any platform Most of the ADORE users have already migrated to these new Java facilities For users who have not yet done so it will be essential to add Option G1 at a cost of 6 000 to the current ADORE license Please note that although the ADORE users manual still talks about the Motif based input and PHIGS based plot facilities these codes are no longer included in the distribution media The pertinent sections of the users manual shall be soon revised Default names for the input data and print output are now changed to DATA txt and PRINT txt respectively This facilitates viewing of these files in the windows environment Test Cases The normal ball and cylindrical roller bearing test cases are included with the program files in addition to the input data print output files all plot data sets are now included in the pro gram media These examples must be run and checked after installation of the program All out puts at least at step 0 must match against the supplied output Please note that the default input data file name is now DATA txt and the print output in stored in PRINT txt While comparing the results with those produced by earlier versions some differences in the transient solutions and time step sizes may be observed These difference are primarily due to code corrections outlined
7. he execut able the following suggested procedure may be helpful 1 Start Microsoft Developer Studio and select the File option to create a new project 2 For type of application select Console Application and name the application as adore51 or other desired name 3 Once the project space is created use the inert option to add source files After navigat ing to the appropriate source directory first add the file m_parameters f only In the second step add all the m_ f module files In the final step all the other source file The file to be added is simply selected by a mouse click on the file in the selection widow To select more than one file simple hold the Ctrl key while clicking the mouse 4 Now use the Build option to create the executable Java facilities adrInput and adrPlot See instructions and setup files in subdirectory Disk3 AGORE The procedures for installing the graphics animation program AGORE are very similar to the procedures described above for ADRPB On IBM AIX system simply used the com mand xlc o agore lm lgP agore c Note that AGORE is written in C language Thus a C compiler is used On other systems the compilation command and the PHIGS library reference must be appropriately modified ADORE Update 5 2 Page 5 of 6 Contact Information In the event of any questions and or technical support please contact Dr Pradeep K Gupta PKG Inc 117 Southbury Road Clifton Park NY 12065 771
8. mplex visco elastic models due to the limited shear behavior the traction curve is quite smooth and greatly different from that predicted by the Newtonian model under very high contact pressures and rolling velocities Thus the visco elastic model may take care of the stability issues but the need for experimental validation of pre dicted bearing performance and realistic estimates of required lubricant properties still remains Print Output The following enhancements are made to the print output in version 5 2 1 Relative axial position of rolling is now changed to absolute position as measured from the bearing center which is center of the outer race 2 Operating pocket clearance is added to the cage race section of the print output 3 The lubricant data section is revised to show hypothetical model code in the output Also the title Slip and max traction is changed to Slip at critical traction This permits to print the slip velocity at which the traction slope changes in the two slopes model 4 In procedure SymSolution in Adrb1 the solutions for maxStress slip and its normal ized position are added so that these values are available for print output 5 Added rolling velocities and centrifugal forces on rolling elements to the print output Unloaded Rolling Elements Significant enhancements are made to the UnloadedRollingElements procedure in subrou tine Adra4 particularly for roller bearings Earlier version assumed
9. pecification of arbitrary cage pockets in roller bearings the inputs on record 7 3 1 are enhanced to include all three transformation angles Earlier two of the three angles were set to zero within the code Race Imperfections The race imperfection options specified in the input options are now fully operational for both ball and roller bearings Earlier these options were only available via user programmable subroutine Code Corrections The following minor corrections supplied as temporary fixes after release of version 5 1 have been permanently implemented in the current version 5 2 1 Corrected spherical roller mass computation in the Set Defaults procedure in subroutine Adral 2 Transformation matrix in the derivative computation of roller flange interaction sub routine Adrc31 is corrected 3 A minor correction to roller transformation matrix in the procedure ApplyReCorr in subroutine Adra4 improved convergence of moment equilibrium equation for misaligned rollers 4 A minor correction in procedure AdjstAngVel in ADORE to correct the angular and orbital velocities for ball bearings with pure radial load Current Limitations The following features which were available in earlier version but were not commonly used are still not available in version 5 2 e Predictor Corrector integration methods e Race flexibility option ADORE Update 5 2 Page 2 of 6 Users Interfaces In accordance to earlier notifications the Moti
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