Evolution of Matrix Cracking Damage in FRP Crossply Laminates (1st Report, Theoretical Analysis of Energy-Release Rate of Cracking)

摘要

The energy-release rate (ERR) due to transverse matrix cracking in a 90° layer of FRP crossply laminate is theoretically calculated. The EFP of the whole laminate is derived for two cases of displacement-controlled and dead-load conditions. The exact expression of ERR is derived by a precise examination of load-displacement characteristics taking account of residual displacements due to relaxation of thermal residual stresses.