Abstract
A specialized layered composite finite element for problems of delamination buckling and growth has been developed based on a thick plate element. The element allows delaminated laminae to be joined together easily by using the simple method of shifting the position of the mid-plane of the element relative to the laminae it represents. In addition the element includes a small initial out-of-plane displacement to enable buckle initiation to take place without requiring normal forces to be applied. The element is demonstrated to function correctly using a number of simple test cases and by comparing the results of an analysis of a circular delamination with those from a full three-dimensional analysis.
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