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Finite Element Analysis of Antennas and Arrays
An incremental and piecewise linear finite element theory is developed for the large displacement, large strain regime with particular reference to elastic-plastic behavior in metals. The resulting equations, though more complex, are in a similar form to those previously developed for large displacement, small strain problems, the only additional term being an initial load stiffness matrix which is dependent on current loads. This similarity in form means that existing nonlinear general purposedoi:10.1002/9780470409732.ch2 fatcat:ftzv744d5fb5tjoq327uxkur54