| 圆柱壳自由振动特性分析方法研究 |
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| 引用本文： | 杨毅,魏光涛,阎桂荣.圆柱壳自由振动特性分析方法研究[J].应用力学学报,2011,28(1). |
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| 作者姓名： | 杨毅 魏光涛 阎桂荣 |
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| 作者单位： | 西安交通大学,强度与振动教育部重点实验室,710049,西安 |
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| 摘 要： | 对传统解析法进行了改进,直接将复特征根代入边界条件构造了特征方阵;并基于圆柱壳Flügge 模型推导了位移形式的传递函数矩阵.在此基础上对比了改进的解析法、传递函数法、有限元法和实验方法获得的两端自由边界条件下圆柱壳的固有频率和模态.研究结果表明:改进的解析方法其特征方阵表达式简单且易于实现;同时通过与有限元和实验方法的对比,验证了改进解析法和位移形式传递函数矩阵的正确性;传递函数法相对于传统解析法对舍入误差敏感,可以通过增加字长的方式进行改善.
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| 关 键 词： | 圆柱壳 Flügge 模型 传递函数法 有限元 模态实验 |
The research of vibration analysis methods for circular shell |
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| Yang Yi,Wei Guangtao,Yan Guirong.The research of vibration analysis methods for circular shell[J].Chinese Journal of Applied Mechanics,2011,28(1). |
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| Authors: | Yang Yi Wei Guangtao Yan Guirong |
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| Institution: | Yang Yi Wei Guangtao Yan Guirong(MOE Key Laboratory For Strength and Vibration,Xi'an Jiaotong University,710049,Xi'an,China) |
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| Abstract: | In this article,firstly,the traditional analytical method is improved.The characteristic matrix is constructed via the complex boundary condition equation directly.Secondly,the transfer matrix method is researched based on the model.Lastly,we compare the modal results of two-free-end cylinder obtained via the improved analytical method,the transfer matrix method,the FE method and the experimental method respectively.The following conclusions are obtained.Firstly,the improved characteristic matrix is easy to... |
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| Keywords: | cylindrical shell model transfer matrix method FEM model test |
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