摘要
本文假定材料的断裂韧性Γ是一个按概率密度分布的随机参数,其概率密度服从Weibull分布。应用 Monte-Carlo方法模拟了层合板在拉伸条件下的断裂过程。计算结果表明:理论预测值与实验结果吻合较好。并得出结论:用Monte-Carlo模型能够较好模拟层合板的拉伸断裂过程,对层合板中基体开裂的演化进行相关的预测是可行并且有效的。
The instantaneous formation of a matrix crack spanning both ply thickness and ply width was assumed to be governed by energy criterion associated with material fracture toughness P at the ply level. Assuming that Г is a random variable, which has obeyed the Weibull distribution, a Monte-Carlo simulation was performed to predict the evolution of transverse ply cracking in a composite laminate. The results simulated by using Monte-Carlo method have a good agreement with the experimental data. The results show that the tensile fracture process in the laminates can be well simulated by Monte-Carlo method.
出处
《力学季刊》
CSCD
北大核心
2005年第4期673-676,共4页
Chinese Quarterly of Mechanics
基金
国家自然科学基金(19972076)
