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单向纤维增强陶瓷基复合材料界面滑移规律

, PP. 101-107

Keywords: 陶瓷基复合材料,界面摩擦模型,界面滑移,载荷历程,滑移区

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Abstract:

建立了分析单向纤维增强陶瓷基复合材料力学特性的界面摩擦模型。采用基体应变能准则对基体损伤状态进行预测;由Weibull分布模型拟合出纤维断裂分数;将界面磨损处理为纤维/基体相对滑移历程的函数τi=τi(Δδ),很好地表征了不同位置纤维/基体相对滑移历程不同所引起的界面磨损程度的区别。运用该模型分析了准静态加载和拉-拉循环载荷下的应力-应变特性,预测结果与实验数据吻合较好。最后采用此模型研究了任意载荷历程下界面的滑移规律。

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