Abstract
The effect of interface bond strength on the transverse behavior of elastic-plastic composite materials is studied. A finite element model employing special interface elements is developed for this study. The interface element allows modeling of either perfect bonding or debonding based on the interfacial stress state. The results of this study provide detailed information regarding the failure mechanisms and the ultimate strength of fiber-reinforced materials. Numerical examples are presented for a Kevlar/epoxy composite system. Failure envelopes for the composite under biaxial loading are obtained for various interface bond strengths. The numerical results are in good agreement with the experimental data.
Published Version
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