Abstract
Failure by kink band instability in a unidirectional fiber composite is analyzed. A micromechanical discretized finite element model is used and compared to an existing composite constitutive model. The comparison is made in a fiber angle vs. applied compressive stress space. An investigation on the relation between the kink band angle and the fiber angle is conducted in the postbuckling regime. The critical kink band angle is examined for different initial fiber misalignment angles.
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