短纤维复合材料应力传递的修正剪滞理论

对短纤维增强金属基复合材料应力传递的传统剪滞理论进行了修正和改进。修正理论中包含了一些在传统剪滞理论中没有很好考虑的因素，包括纤维端部的正应力传递和界面的结合状态。推导得到了描述短纤维复合材料应力传递机制的一些公式。通过与有限元分析得到的应力传递结果比较发现，修正理论对应力传递的描述准确性明显优于传统的剪滞理论。修正是合理而必须的。

THE REVISED SHEAR-LAG THEORY FOR STRESS TRANSFER IN SHORT FIBER COMPOSITES

The traditional shear lag theory of stress transfer in short fiber reinforced metal matrix composites was modified and improved. Some factors that could not be well considered in the former theory were involved in the revised theory. These factors included the normal stress transfer at fiber end and the bond of interface. Some new formulas were gained. In order to discuss the reasonability of the revised formula, the results of these formulas were compared with the stress distributions obtained by finite element method(FEM). It is shown that the revising is reasonable and necessary.