关于含裂纹的复合材料的一个细观断裂模型
On a Micromechanical Model for Cracked Reinforced Composites
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摘要: 本文研究复合材料的小范围屈服断裂过程.首先,提出了含裂纹复合材料的一个细观断裂模型,其中对裂纹顶端的外部地区采用连续介质各向异性描述,对裂纹顶端的小范围地区则采用多相的描述.多相区中考虑三种材料成分,即纤维、界面和基体,它们都可被看作是非线性的,并计入有限变形的影响.我们应用边界层——非线性有限元方法作出本问题的解.Abstract: In this paper,We consider the fracture process of small scale yieldiag for reinforced composites,In the outer region of the crack tip,we use the anisotropic continuum description,while for the crack tip region we use the heterogeneous micromechanical model Three components in heterogeneous region,namely,fibre,Interface and matrix,may be considered as nonlinear The effect of finite deformation is also considered We construct the solutioa of the problem by using the combined boundary layer-nonlinear finite ele went method.
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