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伴随纤维断裂的界面分离能的研究 被引量:2

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摘要 考虑到Poisson效应和分离界面上摩擦应力的作用,建立了伴随纤维断裂时分离界面摩擦滑移的弹性应力传递模型,分别获得了纤维和基体界面分离和结合区域内的弹性应力解.基于能量平衡,推导出纤维断裂后界面分离需要克服的界面分离能的表达式.就SiC纤维增强复合材料对影响界面分离能的多种因素作参数化的数值计算,且结果和shear-lag结果作比较.结果表明,Poisson效应、剪切效应和摩擦应力能增大界面分离能值,抑制界面分离;而纤维断裂减小了界面分离能值,加速了界面分离.
出处 《自然科学进展》 北大核心 2006年第9期1087-1092,共6页
基金 国家高技术研究发展计划(863计划)资助项目(2002AA515020)
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