Tensile properties of laminated composites with a hole under temperature conditions

The stress analysis equations of laminated composites under temperature conditions was derived based on the virtual work principle of incremental form and the theory of unidirectional ply, and the progressive damage stress analysis method of laminated composites considering the effect of temperature was established by integrating the progressive damage analysis theory. On this basis, the tensile damage processes of laminated composites with a hole at 22, 80, 120℃ were predicted; compared with experimental results at 80℃ and 120℃, the maximum error of predicted strength was -2.28%. Research shows that the initial fiber damage strength and the failure strength of laminated composites with a hole are reduced with temperature rising, while the initial matrix damage strength rises gradually. ©, 2015, BUAA Press. All right reserved.