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Modal interaction in postbuckled plates. TheoryPlates can have more than one buckled solution for a fixed set of boundary conditions. The theory for the identification and the computation of multiple solutions in buckled plates is examined. The theory predicts modal interaction (which is also called change in buckle pattern or secondary buckling) in experiments on certain plates with multiple theoretical solutions. A set of coordinate functions is defined for Galerkin's method so that the von Karman plate equations are reduced to a coupled set of cubic equations in generalized coordinates that are uncoupled in the linear terms. An iterative procedure for solving modal interaction problems is suggested based on this cubic form.
Document ID
19900017805
Acquisition Source
Legacy CDMS
Document Type
Technical Publication (TP)
Authors
Thurston, Gaylen A. (NASA Langley Research Center Hampton, VA, United States)
Date Acquired
September 6, 2013
Publication Date
November 1, 1989
Subject Category
Structural Mechanics
Report/Patent Number
L-16573
NASA-TP-2943
NAS 1.60:2943
Accession Number
90N27121
Funding Number(s)
PROJECT: RTOP 505-63-01-09
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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