| 随机参数链式结构系统动力特性数值模拟分析 |
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| 引用本文： | 黄居锋,陈建军,赵颖颖.随机参数链式结构系统动力特性数值模拟分析[J].机械设计与研究,2004,20(6):19-21. |
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| 作者姓名： | 黄居锋 陈建军 赵颖颖 |
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| 作者单位： | 西安电子科技大学,机电工程学院,西安,710071 |
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| 基金项目： | 陕西省自然科学基金资助项目 (D70 1 0 41 8) |
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| 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Monte Carlo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，并考察了系统中结构参数的随机性对其动力特性的影响。
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| 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 |
| 文章编号： | 1006-2343(2004)06-019-03 |
| 修稿时间： | 2004年6月7日 |
Numerical Value Simulation Analysis of Dynamic Characteristics for Randow Chain Mechanism System |
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| HUANG Ju-feng,CHEN Jian-jun,ZHAO Ying-ying.Numerical Value Simulation Analysis of Dynamic Characteristics for Randow Chain Mechanism System[J].Machine Design and Research,2004,20(6):19-21. |
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| Authors: | HUANG Ju-feng CHEN Jian-jun ZHAO Ying-ying |
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| Abstract: | 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. |
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| Keywords: | random chain structures transfer matrix random variables dynamic characteristics analysis Monte Carlo methods |
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