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Unformatted text preview: pt for the nodes at the free end at which stresses
are ignored. POST1 is used to obtain the desired stress results. ANSYS Verification Manual . ANSYS Release 9.0 . 002114 . © SAS IP, Inc. 1–406 VM180 Results Comparison
Target ANSYS Ratio Stresst , psi 655.0 657.4 1.004 Stressc , psi -555.0 -556.6 1.003 ANSYS Verification Manual . ANSYS Release 9.0 . 002114 . © SAS IP, Inc. 1–407 VM181: Natural Frequency of a Flat Circular Plate
Reference: R. D. Blevins, Formulas for Natural Frequency and Mode Shape, Van Nostrand
Reinhold Co., New York, NY, 1979, pg. 241, no. 3. Analysis Type(s): Mode-frequency Analysis (ANTYPE = 2) Element Type(s): 2-D 6-Node Triangular Structural Solid Elements (PLANE2) Input Listing: vm181.dat Test Case
A circular plate with a clamped edge is allowed to vibrate freely. Determine the natural frequencies fi,j for the
first three modes of vibration (j = 0, 1, 2) for the first harmonic (i = 0). Figure 181.1 Flat Circular Plate Problem Sketch Material Properties
E = 30 x 106 psi
υ = 0.3
ρ = .00073 lb-sec2/in4 Geom...
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