87147 083185 074841 ratio 0999 1001 0999 figure 732

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Unformatted text preview: egration time step (0.003 sec) is based on ≈ 1/60 of the period to allow the step changes in acceleration to be followed reasonably well and to produce sufficient printout for the theoretical comparison. Almost 4 cycles are included in the 0.0 to 0.69 sec time range. One master degree of freedom (MDOF) ANSYS Verification Manual . ANSYS Release 9.0 . 002114 . © SAS IP, Inc. 1–164 VM72 is selected at the mass in the spring direction. A static solution is done at the first load step. Results are from the solution phase. POST26 is used to get a displacement versus time display. Results Comparison Peak Number[1] 1 2 3 4 Max. Amplitude, in 1.0000 0.64981 0.42306 0.27525 Time, sec 0.0000 0.18600 0.37200 0.55800 1. Sequence number of the positive displacement vibration amplitude peaks Target ANSYS Ratio R1-2 1.5350 1.5389 1.003 R2-3 1.5350 1.5360 1.001 R3-4 1.5350 1.5370 1.001 Damped natural period1-2 0.18507 0.18600 1.005 Damped natural period2-3 0.18507 0.18600 1.005 Damped natural period3-4 0.18507 0.18600 1.005 Figure 72.2 Displacement vs. Ti...
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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.

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