| 随机参数智能桁架结构动力特性分析 |
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| 引用本文： | 高伟,陈建军,刘伟,马洪波,崔明涛.随机参数智能桁架结构动力特性分析[J].应用力学学报,2003,20(1):123-127. |
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| 作者姓名： | 高伟 陈建军 刘伟 马洪波 崔明涛 |
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| 作者单位： | 西安电子科技大学,西安,710071 |
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| 摘 要： | 文中针对随机参数压电智能桁架结构研究了基于概率的结构动力特性分析方法。建立了压电主动檑和被动杆结构材料的质量密度、弹性模量同时具有随机性时结构的刚度矩阵和质量矩阵；从结构振动的瑞利商表达式出发，利用代数综合法推导出结构特征值随机变量数字特征的计算表达式。最后通过两个算例考察了智能桁架结构物理参数的随机性对其动力特性的影响，并获得了一些有意义的结论。
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| 关 键 词： | 压电智能桁架结构 物理参数 随机变量 动力特性分析 |
| 文章编号： | 1000-4939(2003)01-0123-05 |
| 修稿时间： | 2001年12月3日 |
Dynamic Characteristics Analysis for Intelligent Truss Structures with Random Parameters |
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| Gao Wei,Chen Jianjun,Liu Wei,Ma Hongbo,Cui Mingtao.Dynamic Characteristics Analysis for Intelligent Truss Structures with Random Parameters[J].Chinese Journal of Applied Mechanics,2003,20(1):123-127. |
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| Authors: | Gao Wei Chen Jianjun Liu Wei Ma Hongbo Cui Mingtao |
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| Abstract: | The problem of dynamic analysis based on probability f or the intelligent truss structures with random parameters are studied in this pap er. Considering the randomness of both elastic module and mass density of piezoe lectric active bars and passive bars, the element's and structural stiff and ma ss matrix have been built, the structure dynamic characteristics is analyzed ba sed on probability, and the numerical characteristics of natural frequency rando m variable is derived from the Rayleigh's quotient. Finally, two examples are gi ven, and some conclusions are obtained. |
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| Keywords: | piezoelectric intelligent truss structures phy sical parameters random variables dynamic characteristics analysis |
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