损伤诱导的材料非弹性变形  

Damage Induced Inelastic Deformation of Material

作　　者：宋凡 孙毅[1] 王铎[1] 

机构地区：[1]哈尔滨工业大学航天工程与力学系

出　　处：《哈尔滨工业大学学报》1997年第6期38-41,共4页Journal of Harbin Institute of Technology

基　　金：国家自然科学基金;国家教委留学回国人员基金;黑龙江省自然科学基金

摘　　要：以材料损伤状态为底流形、变形状态为纤维建立了一个材料状态纤维丛模型。利用主纤维丛的结构特征与材料的力学性质，获得了由损伤演化所诱导的材料非弹性变形规律，由此便可得到材料的其它物理量与损伤量间的相互关系。In the present paper,a material model is proposed based on the fibre bundle theory for describing damage induced inelastic deformation.The base manifold is taken as the damage state and the fibre bunble is taken as the deformation state.By using the natures of principal fibre bundle structure and the mechanical preperties of material,the evolution laws of damage induced inelastic deformation have been obtained.So the relations between the damage and the other mechanical quantities of material can be given.

关 键 词：内变量理论 材料力学 非弹性变形 损伤 

分 类 号：TB301[一般工业技术—材料科学与工程] O346.5[理学—固体力学]