Stress and failure analysis of mechanically fastened joints in composite laminates

The literature published on single mechanically fastened joints in fiber-re inforced plastics is reviewed. A finite-element model is developed to predi ct the response of pin-loaded composite plates. The model takes into accoun t contact at the pin-hole interface, progressive damage, large deformation theory, and a non-linear shear stress-strain relationship. To predict the p rogressive ply failure, the analysis combines Hashin and the maximum stress failure criteria. The objectives of the study are to determine the influen ce 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 diff erent stacking sequences. Good agreement between experimental results and n umerical predictions is observed. (C) 2000 Elsevier Science Ltd. All rights reserved.