Affiliation:
1. Applied Mechanics Laboratory Lockheed Palo Alto Research Laboratory Palo Alto, California 94304
Abstract
A conceptually simple mixed mode fracture analysis method is presented for the prediction of tensile matrix failure in composite laminates. The analysis technique, which makes use of a mixed mode strain energy release rate fracture criteria in con junction with an approximate two-dimensional shear-lag model, is cast in terms of a tensile matrix strength criterion. In contrast to presently available point stress tech niques, surprisingly accurate predctions of mode I matrix failure in the 90° lamina of (±θ/90n)sand mixed mode matrix failure in the θ° lamina of (02/θ)sT300/934 com posite laminates are observed.
Subject
Materials Chemistry,Mechanical Engineering,Mechanics of Materials,Ceramics and Composites
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