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Unformatted text preview: Mode-frequency Analysis (ANTYPE = 2) Element Type(s): Elastic Shell Elements (SHELL63) Input Listing: vm62.dat Test Case
Determine the fundamental frequency of out-of-plane vibration f of a wedge-shaped plate of uniform thickness
t, base 2b, and length . Figure 62.1 Wedge Vibration Problem Sketch ANSYS Verification Manual . ANSYS Release 9.0 . 002114 . © SAS IP, Inc. 1–145 VM62
E = 30 x 106 psi
ρ = 0.000728 lb-sec2/in4
υ=0 Geometric Properties
t = 1 in
b = 2 in
= 16 in Analysis Assumptions and Modeling Notes
The problem is solved first using "plate" elements (SHELL63 with bending stiffness only) and then using "shell"
elements (SHELL63 with bending and membrane stiffness). Two symmetric areas are created to ensure model
symmetry about the plate centerline. Out-of-plane (Z-direction) master degrees of freedom (MDOF) are selected
along the plate centerline. Each area is meshed with 4 elements along the X axis and 1 element along the Y axis.
Poisson's ratio is assumed to be zero. Results Comparison
Target ANSYS Ratio Plate Elements f, Hz 259.16 261.11 1.008 Shell Elements f, Hz...
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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
- The Land