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的基本问题．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。
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.
出处
《物理》
CAS
1997年第3期140-146,共7页
Physics
基金
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
关键词
损伤
破坏
细观
非线性
动力学模型
damage and failure, mesoscopic nonlinear dynamic model,evolution induced catastrophe
