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Unformatted text preview: ouseholder method can provide considerable computational time savings over full eigenvalue
extraction. In this example, roughly 25-50% time savings is achieved. 2–18 ANSYS Verification Manual . ANSYS Release 9.0 . 002114 . © SAS IP, Inc. VMC5: Simply-Supported Solid Square Plate
Reference: NAFEMS, “The Standard NAFEMS Benchmarks”, Rev. No. TSNB, National Engineering Laboratory, E. Kilbride, Glasgow, UK, August, 1989, Test No. FV52
(modified). Analysis Type(s): Mode-frequency Analysis (ANTYPE = 2) Element Type(s): 3-D Structural Solid Elements (SOLID45)
3-D 10-Node Tetrahedral Structural Solid Elements (SOLID92) Input Listing: vmc5.dat Test Case
A simply-supported rectangular solid of thickness t is analyzed to determine the first P = 10 natural frequencies
(the first three of which are rigid body modes). Determine the natural frequencies and mode shapes using
Householder eigenvalue extraction for six sets of master degree of freedom selections for both element types. Figure...
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