摘要
本文首次提出了分层伴以横向裂纹扩展的三维有限元模型，对典型铺设的［０２／±４５２／９０２］５碳／环氧复合材料由于其分层伴以横向裂纹损伤产生的层间应力进行了分析。计算结果表明层间裂纹首先在９０°层中部出现并开裂至相邻界面处而产生横向裂纹，横向裂纹的出现引起局部分层接三角形状扩展，并指出分层损伤过程是一个主导性的稳定扩展过程，也是导致刚度下降的主要因素。数值计算结果与试验结果是吻合的。
The 3D finite element model in which delamination and transverse crack development is originally put forward in this paper. Interlaminar stresses are analyzed on growth of transverse crack and delamination in [02±452/t±902]s. laminates. The restllt indicates that crack between plies first appears in layer at 90 angle-ply, and cracking into the next ply and forming transverse cracks. Transverse cracks cause the location delamination of triangle development. The result indicates the development of delamination is a main and steady damage process and also laminates stiffness marks decreases. Numerical results of stiffness are consistent with experimental ones.
出处
《安徽建筑工业学院学报（自然科学版）》
1994年第1期30-34,共5页
Journal of Anhui Institute of Architecture(Natural Science)
