论文部分内容阅读
本文简略地回顾了匀质各向同性材料的破坏准则,对目前已提出的各种匀质正交各向异性材料的破坏准则作了简单的评述,并提出如下两个问题:(1)当问题涉及破坏规律时,可否将复合材料当作匀质正交各向异性来处理?(2)能否用一个统一的破坏准则方程来描述所有各种可能的破坏形式和规律?作者认为答案是否定的。复合材料的破坏准则应该体现非匀质结构物和组分物理结合的特征,要与破坏机理相联系,有比较清楚的物理意义。作者认为细观力学方法是一个有希望的途径,并介绍了这方面工作已取得的成果。
This paper briefly reviews the failure criterion of homogeneous isotropic materials and briefly comments on the failure criteria of various homogeneous orthotropic materials that have been proposed so far. The following two questions are raised: (1) when Can problems be dealt with when the problem involves the destruction of the law? (2) Can a uniform failure criterion equation be used to describe all possible forms and patterns of damage? The author believes that the answer is negative. The failure principle of composite materials should reflect the characteristics of the physical combination of non-homogeneous structures and components. To be related to the failure mechanism, there should be a clear physical meaning. The author believes that meso-mechanics is a promising approach and describes the results that have been achieved in this area.