摘要
通过迭层复合材料板的基体横向裂纹和界面开裂两个常见损伤问题 ,论述用微观力学方法 ,即把含不连续缺陷的弹性体处理为边值问题求解 ;以及用断裂力学的应变能释放率准则确定损伤萌生和扩展的临界条件。
Transverse matrix cracking and delaminating are the common damage modes in laminated composites. Basically there are two micro mechanics approaches to analyse these problems: One is the boundary value problem of elasticity, in which the damage is considered as a discontinuos defect in elastic bodies, and the other is fracture mechanics, in which the damage is assumed as a crack like defect at interface, and thus there exists a critical condition for damage initiation and propagation by the strain energy release rate. Finally, the constitutive relations of composites are established.
出处
《导弹与航天运载技术》
北大核心
2002年第2期32-36,共5页
Missiles and Space Vehicles
基金
国防科技预研资助项目
