碳纤维增强复合材料板中Ⅰ型裂纹扩展方向预测理论研究

基金项目: 山西省自然科学基金资助项目(991063);山西省计委留学基金资助项目(200077)

Prediction of Mode Ⅰ Crack Propagation Direction in Carbon-Fiber Reinforced Composite Plate

Department of Applied Science, Taiyuan Heavy Machinery Institude, Taiyuan 030024, P. R. China

摘要: 对含裂纹碳纤维增强的复合材料层合板进行了裂纹扩展方向预测理论的研究．介绍了一种新的复合材料Z断裂理论，在裂纹尖端Z因子的定义中引入了新概念：面内平均应变，面内膨胀应变能密度因子和交互特征函数．并通过理论分析和实验测试证明了Z断裂理论的正确性．
- 复合材料 /
- 裂纹扩展 /
- Z断裂理论 /
- S断裂准则
Abstract: A newly developed Z fracture criterion for the composite materials was introduced, the new concepts of in-plane average strain, in-plane dilatational strain energy density factor and reciprocal characteristic function were presented. Many experimental results show that the Z fracture criterion can be well used to predict the crack propagating direction for mode crack in carbon-fiber reinforced composite laminates.
- composite material /
- crack propagation /
- Z-fracture criterion /
- S-fracture criterion

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