纖維複合材料疊層板受螺栓應力及墊圈夾壓下之非線性破壞分析

In this study, the nonlinear model was used to predict the failure loads of fiberreinforced composite laminates subjected to pin stress and washer clamping pressure. The nonlinear model included nonlinear constitutive law, mixed failure mode composed of the Tsai-Wu and maximum stress criteria, and post failure response. Appropriate constitutive models were established using the software ABAQUS, and the numerical analysis and the experimental data were compared. The results showed that the proposed model could accurately simulate nonlinear material behavior of composite laminates. In addition, parametric studies for effects of laminate layup, geometric variables, washer size and clamping pressure on the failure load of composite laminates with a pin/washer loaded joint were presented.