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固体破坏的损伤演化诱致突变现象
引用本文:夏蒙棼,柯孚久.固体破坏的损伤演化诱致突变现象[J].物理,1997,26(3):140-146.
作者姓名:夏蒙棼  柯孚久
作者单位:[1]北京大学物理系 [2]北京航空航天大学物理系
基金项目:国家自然科学基金,攀登计划“非线性科学”基金,航空科学基金
摘    要:固体破坏问题在理论上及实际上均极为重要,是涉及力学,物理学及非线性科学等学科的一个十分复杂基本问题,文章介绍了基于细观非线性动力学模型的研究所取得的进展,发现系统显示一种共性特征,称为演化诱致突变,即演化模式从整体稳定向灾变性模式转变,宏观破坏的样本个性行为,以及宏观性质对细观无序性的敏感性。

关 键 词:损伤  破坏  细观  非线性  动力学模型

Damage Evolution Induced Catastrophic Phenomena in Failure of Solids *
Xia Mengfen,Ke Fujiu,Bai Yilong.Damage Evolution Induced Catastrophic Phenomena in Failure of Solids *[J].Physics,1997,26(3):140-146.
Authors:Xia Mengfen  Ke Fujiu  Bai Yilong
Abstract:Failure in solids is a problem of scientific and technological importance and is a complex and fundamental problem dealing with a wide range of disciplines including mechanics, physics and nonlinear science. This paper reviews the progress in studies of mesoscopic nonlinear dynamical models. It is found that these systems show universal characteristics, known as evolution induced catastrophe, which involve the conversion of globally stable evolution modes to catastrophic modes, the sample specific behavior of macroscopic failure, and the sensitivity of macroscopic properties to mesoscopic disorder.
Keywords:damage and failure  mesoscopic nonlinear dynamic model  evolution induced catastrophe
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