随机参数链式结构系统动力特性数值模拟分析  

Numerial Value Simulation Analysis of Dynamic Characteristics for Random chain Mechanism System

作　　者：黄居锋[1] 陈建军[1] 赵颖颖[1] 

机构地区：[1]西安电子科技大学机电工程学院,西安710071

出　　处：《机械设计与研究》2004年第6期19-21,共3页Machine Design And Research

基　　金：陕西省自然科学基金资助项目 (D70 1 0 41 8)

摘　　要：对随机参数链式结构系统基于概率的动力特性建模和分析方法进行了研究。首先根据结构振动的传递矩阵法建立了在各种边界条件下求解系统固有频率的随机高次代数方程 ,提出了MonteCarlo模拟法与非线性方程数值解法相结合的求解策略 ,利用点估计获得了系统各阶固有频率随机变量的数字特征。通过算例表明文中模型的合理性和方法的有效性 。The problem of dynamic analysis based on reliability for the chain structures with random parameters are studied in this paper. Considering the randomness of structure parameters,the method to calculate natural frequency has been built,the structure dynamic characteristics is analyzed based on probability,and the digital characteristics for each order random variable of natural frequency is derived by using Monte Carlo random simulation methods. Finally,two examples are given,and some conclusions are obtained.

关 键 词：随机链式结构 传递矩阵 随机变量 动力特性分析 MONTE Carlo法 

分 类 号：TH12[机械工程—机械设计及理论]