本文作者通过数值模拟的方法,考察了纤维在基体中埋深长度及基体对纤维的包裹厚度等几何因素对纤维拔出实验中界面应力分布和断裂力学性能的影响.在理想界面(纤维与基体间完好粘结)假设下,纤维与基体间界面剪应力与正应力沿纤维轴向的分布进行了定量研究;在忽略温度残余应力、裂缝间摩擦力和材料非线性效应的条件下,对开裂全过程中系统能量释放率的变化规律进行了数值跟踪.研究表明:实验样本的几何尺寸显著地影响界面的应力分布和断裂性能.
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