Nonlinear Analysis of Plates and Shells by the Incremental Procedure Using a Mixed Model of the Finite Element Method

概要

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A formulation of the mixed finite element method is proposed in this paper which may be suitable for analysis of the instability problems of plates and shells. A plane triangular element is applied to the problems of a large deflection of square plates with initial deflection, a snap-through of shallow square caps, a large deflection of circular plates and a compression buckling of square plates with the results obtained by previous workers. And it can be concluded that, although the expression of the obtained stiffness matrix is quite simple sufficiently accurate results can be obtained by using the present method.
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