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Unformatted text preview: Peak displacement. 4. Displacement at the time closest to the theoretical time point given. 5. From Element 1. 1–194 ANSYS Verification Manual . ANSYS Release 9.0 . 002114 . © SAS IP, Inc. VM85 Figure 85.2 Displacements at Center and Ends of Bar Figure 85.3 Velocities at Center and Ends of Bar ANSYS Verification Manual . ANSYS Release 9.0 . 002114 . © SAS IP, Inc. 1–195 VM86: Harmonic Response of a Dynamic System
Reference: W. T. Thomson, Vibration Theory and Applications, 2nd Printing, Prentice-Hall,
Inc., Englewood Cliffs, NJ, 1965, pg. 56, ex. 3.1-2. Analysis Type(s): Reduced Harmonic Response Analysis (ANTYPE = 3) Element Type(s): Combination Elements (COMBIN40) Input Listing: vm86.dat Test Case
A machine of weight W is supported on springs of total stiffness k. If a harmonic disturbing force of magnitude
F1 and frequency f (equal to the natural frequency of the machine, fn) acts on the machine, determine the displacement response in terms of the peak amplitude Ao and phase angle Φ. Assume a viscous damping coefficien...
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