In this review paper, a methodology for measuring the interface fracture toughness of a crack between two isotropic, homogeneous materials and a delamination between two laminae of unidirectional composite materials of differing directions is presented. Four cases are considered. For the laminates described here, they were determined by the Stroh and Lekhnittski formalisms. A failure criterion determined from first principles is presented.
Marie-Laure Dano, Guy Gendron, André Picard,
Stress and failure analysis of mechanically fastened joints in composite laminates, Composite Structures, Volume 50, Issue 3, November 2000, Pages 287-296, ISSN 0263-8223, 10.1016/S0263-8223(00)00119-7.
http://www.sciencedirect.com/science/article/pii/S0263822300001197
Abstract : The literature published on single mechanically fastened joints in fiber-reinforced plastics is reviewed. A finite-element model is developed to predict the response of pin-loaded composite plates. The model takes into account contact at the pin–hole interface, progressive damage, large deformation theory, and a non-linear shear stress–strain relationship. To predict the progressive ply failure, the analysis combines Hashin and the maximum stress failure criteria. The objectives of the study are to determine the influence of the failure criteria, the inclusion of a non-linear shear behavior on the strength prediction and the load–pin displacement curve. The proposed model is used to predict the bearing response of composite plates with different stacking sequences. Good agreement between experimental results and numerical predictions is observed.
Keywords: Pin-joints; Composite laminates; Finite-element analysis; Non-linear modelling; Failure criteria; Bearing strength
