短纤维金属基复合材料应力传递的有限元分析

基于短纤维增强金属基复合材料的单纤维轴对称和三维细观力学模型，利用弹塑性有限元分析方法对该复合材料中基体与纤维间的应力传递进行研究，研究中主要讨论了基体、纤维和界面的力学性能以及纤维位向的变化对应力传递和应力分布的影响。研究表明，复合材料微结构参数的变化将显著影响基体与纤维间的应力传递和复合材料中的应力分布，复合材料设计过程中必须考虑合理的微结构特征。

The Finite Element Analysis for Stress Transfer of Short Fiber Reinforced Composite

Based on the single fiber axi-symmetrical and 3-D meso-mechanical models, with the elastic-plastic finite element method, the stress transfer in short fiber reinforced metal matrix composite was studied systematically and in detail. The more attention was paid for the effects of matrix, interface and fiber orientation on stress transfer and stress distribution in composite. It is concluded that the variations of matrix, interface and fiber orientation influence the stress transfer and stress distribution in short fiber reinforced metal matrix composite greatly. The microstructure features must be paid more attention to in the design of composite.