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Application of cohesive-zone models to delamination behaviour of composite material

Abstract : The parameters of cohesive elements have to be chosen correctly in the simulation of composite delamination by finite element method: such as interface strength, interface stiffness and shape of cohesive law. The purpose of this work is to investigate their influence on the accuracy of the results obtained. A three-dimensional cohesive-zone model has been established using Ls-dyna to simulate Double-Cantilever-Beam mode I (DCB) and Edge-Notched-Flexure mode II (ENF) tests. The influence of these parameters of cohesive element on the maximum load and the slope of load-displacement curve have been discussed by comparing experimental and numerical results. Four traction-separation laws: bilinear, linear-parabolic, exponential and trapezoidal were considered associated with a large variation of the interface strength and of the initial interface stiffness.
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Submitted on : Tuesday, July 16, 2019 - 3:24:42 PM
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  • HAL Id : hal-02185317, version 1


L. Peng, Xiaojing Gong, K. Wong, L. Guillaumat. Application of cohesive-zone models to delamination behaviour of composite material. World Journal of Engineering, 2012, 9 (2), pp.109--118. ⟨hal-02185317⟩



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