材料强度理论的讨论  

Discussion of strength theory for materials

作　　者：郑颖人[1] 高红[2] 

机构地区：[1]后勤工程学院军事土木工程系,重庆400041 [2]中国科学院武汉岩土力学研究所,湖北武汉430071

出　　处：《广西大学学报（自然科学版）》2008年第4期337-345,共9页Journal of Guangxi University（Natural Science Edition）

基　　金：国家自然科学基金资助项目(10402014)

摘　　要：强度准则是一个力学基础理论.通过对比实验现象与强度理论,指出材料的破坏形式取决于应力条件与材料的性质,并讨论了强度准则需遵循的力学依据及其检验标准.分析了金属和岩土材料的强度准则,分别从能量和应力的角度推导了金属Mises准则,详细介绍了作者最近导出的岩土材料三剪能量屈服准则及其相应的Drucker-Prager准则,表明无论强度条件以何种形式表示,它们的实质与结果都是一致的,并对当前常用的各种准则进行了系统的对比研究.The strength criterion is a basic mechanical theory. After comparing test result with strength theory, it is concluded that failure form of materials depends on the stress condition and property of materials ,and the mechanical basis and test standard which should be followed by strength criterion are discussed. The strength criteria of metals and geomaterials are analyzed respectively. The Mises criterion of metals is deduced from the point of energy and stress, and the tri-shear energy yield criterion of geomaterials and its corresponding Drucker-Prager criterion proposed by author recently are introduced in detail. The research shows that no matter which expression form is used for the strength condition, the essence is the same. At last the commonly used strength criteria are studied and compared systematically.

关 键 词：摩擦特性 强度准则 能量 屈服条件 三剪 

分 类 号：TU443[建筑科学—岩土工程]