Conference Paper

A simple nonlinear finite element model for axisymmetric shells,

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Abstract

The present study has involved the development of a mathematical and numerical model of shallow shells of revolution which may possibly undergo snap-through buckling. For the numerical solution of the problem a computer program, using a linearized finite element incremental-iterative approach based on updated Lagrangian formulation and solution strategies, which allow traversing limit points, is developed. The efficiency of the program in passing limit points in the post-critical region has been demonstrated. A two noded conical frusta proved to be very efficient when applied to thin shells where the results compare favorably with those achieved with more advanced elements.

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