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Unformatted text preview: SYS Release 9.0 . 002114 . © SAS IP, Inc. 1–309 VM139 Analysis Assumptions and Modeling Notes
Since the plate ends are "immovable" along the X-axis, a small lateral displacement due to the pressure load induces membrane stresses. The stress stiffening and large deflection capabilities are used to model this effect.
The geometric and loading symmetry is used to model only half the plate with appropriate symmetry boundary
conditions at the midspan.
Two analysis solutions are performed. The first solution (without large deflection and stress stiffening) results in
a small deflection static solution (with no coupling between in-plane and transverse deflections). The second
solution (with large deflection and stress stiffening) results in a converged solution with the coupling effects.
POST1 is used to report nodal stresses along the plate middle and bottom. Note that these stresses are based
on the original geometry and include the element rotations, due to the large deflection option.
The above two solutions are...
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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