Fatigue Life Prediction of Composite Pin Joints
In this research, new progressive fatigue damage models are established to calculate the fatigue life and simulate damage process of composite pin joints. The proposed models based on residual strength and residual stiffness of unidirectional laminates, have three parameters to present the different damage state, which can accurately describe the growth process of fatigue damage propagation by the mathematical method. The fatigue damage models combining with stress analysis, failure analysis, and material property degradation process, can predict the fatigue life, damage state and residual material properties of composite structures under arbitrary loading conditions. Using the models, composite pin joints with different stacking sequence are analyzed, fatigue life and damage quantification are concluded simultaneously. The proposed models and the process of analysis provide a way to solve the fatigue durability of composite structures.
Y.N. Zhong and Z.J. Hu
P. G. Mu and X. P. Wan, "Fatigue Life Prediction of Composite Pin Joints", Applied Mechanics and Materials, Vol. 697, pp. 57-61, 2015