Prediction for progression of transverse cracking in CFRP cross-ply laminates using Monte Carlo method

摘要

This study predicted transverse cracking progression in laminates including 90 degrees plies. The refined stress field (RSF) model, which takes into account thermal residual strain for plies including transverse cracks is formulated, and the energy release rate associated with transverse cracking is calculated using this model. For comparison, the energy release rate based on the continuum damage mechanics (CDM) model is formulated. Next, transverse cracking progression in CFRP cross-ply laminates including 90 degrees plies is predicted based on both stress and energy criteria using the Monte Carlo method. The results indicated that the RSF model and the CDM model proposed in this study can predict the experiment results for the relationship between transverse crack density and ply strain in 90 degrees ply. The models presented in this paper can be applied to an arbitrary laminate including 90 degrees plies.