9726 in2 240 in h 14 in analysis assumptions and

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Unformatted text preview: assumed. The acceleration results are converted from in/sec2 to g in POST1. ANSYS Verification Manual . ANSYS Release 9.0 . 002114 . © SAS IP, Inc. 1–156 VM68 Results Comparison Target ANSYS Ratio f1 , Hz 20.57 20.57 1.000 f2 , Hz 64.88 64.88 1.000 Mass 1 - 1 stress Std. dev. 9.059[1] 9.059 1.000 Mass 2 - 1 stress Std. dev. 10.63[1] 10.63 1.000 1. Numerical solution with a uniform frequency spacing equal to 0.001 Hz in the frequency range of 10 to 100 Hz ANSYS Verification Manual . ANSYS Release 9.0 . 002114 . © SAS IP, Inc. 1–157 VM69: Seismic Response Overview Reference: W. T. Thomson, Vibration Theory and Applications, 2nd Printing, Prentice-Hall, Inc., Englewood Cliffs, NJ, 1965, pg. 78, ex. 3.11-1 Analysis Type(s): Mode-frequency, Seismic Analysis (ANTYPE = 2) Element Type(s): Combination Elements (COMBIN40) Input Listing: vm69.dat Test Case The spring-mass system shown below represents a vibrometer. Determine its natural frequency f. The displacement response spectrum for the vibromet...
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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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