摘要
利用剪切滞后法 ,给出一种新的基体损伤模型 ;利用 J积分理论 ,给出一种新的由基体裂纹导致的纤维 /基体界面脱粘裂纹损伤模型。理论分析和数值计算得到了一些关于纤维增强复合材料强度和损伤有参考价值的结论 ,并对复合材料中一些常见的损伤破坏形式进行了定性的解释 ,由此表明本模型的可行性。
A composite material with brittle matrix and uni-direction fiber reinforcement was considered. The analytical model of fracture mechanics for the matrix damage was built based on the shear-lag method proposed by Laws N. The relationship of deterioration of mechanical properties of fiber-reinforced composites to damage in matrix was derived. The interface crack growth model caused by matrix crack was also obtained by using J-integral method. The condition of interface debonding was given and it is shown that the debonding cracks can not be connected.
出处
《西北工业大学学报》
EI
CAS
CSCD
北大核心
2001年第4期529-532,共4页
Journal of Northwestern Polytechnical University
