Prasad r t haftka optimal structural design with

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Unformatted text preview: , ITER 1) 336.5 336.6 1.000 f2,1, Hz (L.S. 3, ITER 1) 450.9 451.3 1.001 f0,2, Hz (L.S. 1, ITER 2) 484.7 486.2 1.003 Figure 152.2 Mode Shape Displays Window 1 - f0,1; Window 2 - f1,1; Window 3 - f2,1; Window 4 - f0,2; 1–336 ANSYS Verification Manual . ANSYS Release 9.0 . 002114 . © SAS IP, Inc. VM153: 3-D Nonaxisymmetric Vibration of a Stretched Membrane Overview Reference: S. Timoshenko, D. H. Young, Vibration Problems in Engineering, 3rd Edition, D. Van Nostrand Co., Inc., New York, NY, 1955, pg. 439, article 69. Analysis Type(s): Mode-frequency Analysis (ANTYPE = 2) Prestress Static Analysis (ANTYPE = 0) Substructure Cyclic Symmetry Matrix (Macro) Element Type(s): Membrane Shell Elements (SHELL41) Input Listing: vm153.dat Test Case A circular membrane under a uniform tension S is allowed to vibrate freely. The edge of the membrane is simply supported. Determine the natural frequencies fi,j for the first two modes of vibration (j = 1, 2 = no. of nodal circles, including the boundary) for the first two...
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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.

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