Abstract
A geometrically nonlinear finite-element formulation based on the total Lagrangian approach is used to predict the onset of various failure modes in laminated composite beams and arches. Some of the failure modes considered include matrix cracking, fiber breakage, and delamination. Numerical examples of beam and arch geometries are analyzed statically to observe the characteristics of large displacements and large rotations considering these failure modes. Large strain effects on load displacement characteristics are studied. Load-carrying capabilities of the composite beam and arch structures, after the first ply failure, are discussed.
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