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在实际工程和在固体材料破坏研究中"力"的强度准则占据着统治地位,而变形的作用没有得到足够的重视.现就变形在材料破坏中的作用进行了研究,可以看出,材料的变形破坏过程为一个动态过程,仅仅用材料强度极限来描述材料的破坏是不够的,必须考虑变形的发展.变形是衡量材料内部结构变化的一个宏观指标,它给出了临界应力发展的额外信息,因此可以用它来描述材料的破坏.
Abstract："Force"strength criteria dominate the engineering practice and the study of fracture of material.At the same time the role of deformation is somewhat ignored.In the present paper the role of deformation in fracture of material is studied.It is clear from the study that deformation process of material is a kinetic process,description of fracture with the help of only stresses is not sufficient,deformation of material must be considered.Deformation is macroscopic parameter for measuring the change of internal structure of material,and gives additional information on evolution of critical stresses.Deformation can be used as governing parameter to describe the fracture of material.
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基本信息:
中图分类号:O344.3
引用信息:
[1]李松林,戚承志,罗健,等.变形在固体材料破坏中的作用[J].北京建筑工程学院学报,2007,No.70(03):5-9.
基金信息:
国家自然科学基金重大项目(50490275)