蠕变损伤本构方程的优化特性  

CHARACTERISTICS OF OPTIMIZATION OF CREEP CONSTITUTIVE EQUATIONS

作　　者：李柏林[1] 林建国[2] 姚新[2] 

机构地区：[1]西南交通大学机械工程学院,成都610031 [2]伯明翰大学

出　　处：《机械工程学报》2003年第3期37-39,共3页Journal of Mechanical Engineering

基　　金：国家自然科学基金资助项目(59975077)。

摘　　要：研究了蠕变损伤统一本构方程优化模型的特性,分析了传统的基于沿搜索方向进行迭代的优化方法失败的原因,指出了适合求解这类问题的优化方法应具有的性质。最后用进化规划对这一问题进行了求解,取得了很好的效果,所得结论对同类问题有一定的指导作用。The characteristics of optimization models for the united creep damage constitutive equations is discussed. The reason of fail of using the traditional gradient-based methods to optimize the problem is analysed, and the characteristics for the optimization methods which are adaptive to solve the kinds of problems are given. The evolutionary algorithm is used to optimize this problem and the better result is achieved. The conclusions may be helpful during optimizing the similar problems to this.

关 键 词：本构方程 蠕变损伤 优化 

分 类 号：O345[理学—固体力学]