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Unformatted text preview: ough to minimize the elastic contact effect but low enough to also
allow a practical integration time step size. The integration time step (0.2025/405 = 0.0005 sec) is based on ≈ 1/Nf
where N = 20 and f is the system natural frequency. At release, the mass acceleration is not necessarily zero.
Therefore, a load step with a small time period is used to ramp up to the appropriate acceleration while maintaining an essentially zero velocity. The final time of 0.2025 sec allows one full cycle of motion. POST26 is used
to postprocess results from the solution phase. ANSYS Verification Manual . ANSYS Release 9.0 . 002114 . © SAS IP, Inc. 1–166 VM73 Results Comparison
Target ANSYS Ratio u, in (t = 0.09 sec) 0.87208 0.87147 0.999 u, in (t = 0.102 sec) 0.83132 0.83185 1.001 u, in (t = 0.183 sec) -0.74874 -0.74841 0.999 Figure 73.2 Displacement vs. Time Display ANSYS Verification Manual . ANSYS Release 9.0 . 002114 . © SAS IP, Inc. 1–167 VM73 Figure 73.3 Sliding Force vs. Time Display 1–168 ANSYS Verification Manual . ANSYS Release 9.0 . 002114 . ©...
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This note was uploaded on 12/09/2010 for the course DEPARTMENT E301 taught by Professor Kulasinghe during the Spring '09 term at University of Peradeniya.
- Spring '09
- The Land