时域自适应精细算法求解自激振动问题  

SOLVING SELF-EXCITED VIBRATION PROBLEMS VIA A SELF-ADAPTIVE PRECISE ALGORITHM IN TIME DOMAIN

作　　者：李楠[1] 杨海天[1] 王跃方[1] 

机构地区：[1]大连理工大学工程力学系,辽宁大连116023

出　　处：《工程力学》2007年第1期23-26,共4页Engineering Mechanics

基　　金：国家自然科学基金项目(10472019;10421002);973项目(2005CB321704);教育部骨干教师资助计划(2000-65);辽宁省中青年学术带头人基金

摘　　要：应用时域自适应精细算法求解自激振动问题,将各物理量在离散时段内展开,可进行自适应递推计算,对非线性计算不做附加假设,避免了非线性迭代。数值分析表明,时域自适应精细算法可有效地用于自激振动问题的求解。An application of a self-adaptive precise algorithm in time domain is presented in this paper for solving self-excited vibration problems. By expanding variables at discretized time intervals, a recursive and self-adaptive computation can be conducted. There is no requirement of additional assumption and iteration for non-linear analysis. A couple of examples with high computing accuracy are given to show that the algorithm is a useful tool solving self-excited vibration problems.

关 键 词：自激振动 耦合自激振动 参激振动 精细算法 自适应 

分 类 号：O323[理学—一般力学与力学基础]