Unformatted text preview: obtained from the centroidal pressure of element 5 (ETABLE item PREL in POST1). 1–332 ANSYS Verification Manual . ANSYS Release 9.0 . 002114 . © SAS IP, Inc. VM151: Nonaxisymmetric Vibration of a Circular Plate
Reference: R. J. Blevins, Formulas for Natural Frequency and Mode Shape, Van Nostrand
Reinhold Co., New York, NY, 1979, pg. 240, no. 2. Analysis Type(s): Mode-frequency Analysis (ANTYPE = 2) Element Type(s): Axisymmetric-Harmonic Structural Shell Elements (SHELL61) Input Listing: vm151.dat Test Case
A circular plate with a simply supported edge is allowed to vibrate freely. Determine the natural frequencies fi,j
for the first mode of vibration (j = 1 = no. of nodal circles, including the boundary) for the first three harmonics
(i = 0,1,2 = no. of harmonic indices). Figure 151.1 Circular Plate Problem Sketch Material Properties
E = 30 x 106 psi
υ = 0.3
ρ = 0.00073 lb-sec2/in4 Geometric Properties
a = 3 in
t = 0.05 in Analysis Assumptions and Modeling Notes
Poisson's ratio defaults to 0.3 and is not defined with the input data. A total of 9 elements is selected for meshing.
All lateral degrees of freedom are selected as master...
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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
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