【摘要】 运用空间轴对称弹塑性有限元方法，研究了短纤维增强金属基复合材料拉伸应力场分布．研究表明，基体和纤维的应力分布 及基体塑性行为具有明显的不均匀性，材料参数（纤维长径比、纤维体积分数、纤维根间距和基体应变硬化指数）以不同方式通过影响应 力传递、基体约束变形和基体应变硬化进而影响应力场分布。更多还原

【Abstract】 The tensile stress field distribution in short fiber reinforced metal matrix composite was investigated by using the large strain two-dimension axisymmetric elastoplastic finite element method. It was shown that the stress distributions in the matrix and fiber as well as the plastic behavior of the matrix are of significant non-homogeneity. The material parameters (fiber volume fraction, fiber aspect ratio, fiber end distance and matrix strain hardening coefficient) affect the stress field distribution in different ways through their influence on the stress transfer, the constrained matrix deformation and matrix strain hardening.更多还原