Abstract
The finite element solution program MAGNA, developed for the nonlinear analysis of three-dimensional structures, is described. The program contains a fully compatible library of nonlinear elements, permitting shells, solids and other members to be joined in virtually any combination. Element-level computations, whose efficiency is critical in three-dimensional analysis, are discussed, and a method of implementation is described which eliminates a number of large matrix manipulations and produces highly vectorizable code. Applications are presented to demonstrate the capabilities and efficiency of the program. General areas of research which are necessary for the improvement of efficiency in three-dimensional non-linear analysis are also discussed.
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