【摘要】 研究了扩散控制的界面滑动对纤维复合材料的横向剪切变形行为的影响。基体和纤维为弹性的,而界面滑动速率正比于界面剪应力。作为辅助问题,首先考虑了单根纤维嵌在无限大基体的特殊情形,导出了纤维和基体中随时间变化的应力场。其次,应用平均场方法给出了任意时刻复合材料的总体响应。数值结果表明复合材料的横向剪切模量随着界面滑动的发生将显著减小。更多还原

【Abstract】 The effect of diffusion controlled interfacial sliding on the transverse shear deformation of fibrous composites is studied. The matrix and fiber are assumed elastic, and the sliding rate is proportional to the shear stress on the interface. As an auxiliary problem, the special case of a single fiber embedded into an infinite matrix is considered firstly, and the time dependent stress in the composite at any time is given. The overall response of the composite is then analysed by MoriTanaka method. Numerical results reveal that the transverse shear modulus of the composite decreases significantly with the occurrence of interfacial sliding.更多还原