| 非比例阻尼结构频响函数计算的高精度级数展开法 |
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| 引用本文： | 邱文龙,童昕.非比例阻尼结构频响函数计算的高精度级数展开法[J].华侨大学学报(自然科学版),2005,26(3):287-290. |
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| 作者姓名： | 邱文龙 童昕 |
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| 作者单位： | 华侨大学机电及自动化学院,泉州,福建,362021;华侨大学机电及自动化学院,泉州,福建,362021 |
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| 摘 要： | 基于复模态理论的复模态展开法是非比例阻尼结构频响函数计算的重要方法．该方法由于截断高阶模态。而产生较大误差．本文用低阶模态和系统矩阵表达高阶模态对非比例阻尼结构频响函数的贡献．提出非比例阻尼结构频响函数计算的高精度级数展开方法．提高计算精度．文中的算例表明本文方法的有效性和正确性．
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| 关 键 词： | 阻尼结构 频响函数 模态展开法 级数展开 |
| 文章编号： | 1000-5013(2005)03-0287-04 |
A High Accurate Method of Series Expansion for Calculating Frequency Response Function of Disproportional Damping Structure |
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| Qiu Wenlong,Tong Xin.A High Accurate Method of Series Expansion for Calculating Frequency Response Function of Disproportional Damping Structure[J].Journal of Huaqiao University(Natural Science),2005,26(3):287-290. |
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| Authors: | Qiu Wenlong Tong Xin |
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| Abstract: | Complex modal theory-based method of complex modal expansion is an important method for calculating frequency response function of disproportional damping structure. The method engenders fairly markable error because of truncating the mode shape of high order. In this paper, the contribution of high order mode shape to the frequency response function of disproportional damping structure is expressed by using low order mode shape and system matrix. In order to promote accuracy of computation, the authors propose a high accurate method of series expansion for calculating frequency response function of disproportional damping structure. The efficiency and correctness of this method are indicated by numerical examples. |
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| Keywords: | damping structure frequency response function method of modal expansion series expansion |
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