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| 复振型导数计算的移位多次模态加速法 | |
| 引用本文： | 曾庆华. 复振型导数计算的移位多次模态加速法[J]. 计算力学学报, 1995, 12(2) |
| 作者姓名： | 曾庆华 |
| 作者单位： | 南京航空航天大学振动工程研究所 |
| 摘 要： | 本文研究了含粘性阻尼结构的复振型导数计算问题，将导数计算问题看成是一个简谐激振的响应计算问题，采用多次模态加速法和移位法，导出了复振型导数计算的移位多次模态加速法。该方法具有明确的数学和物理意义，可导出已有的各种计算方法。算例表明本方法计算复振型导数只需用很少几个模态即可保证精度，计算量大大减少。 |
| 关 键 词： | 灵敏度分析，振型，复模态，模态加速法 |
A shifted-poles and multiple modal acceleration method for computing complex mode shape derivatlves |
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| Zeng Qinghua. A shifted-poles and multiple modal acceleration method for computing complex mode shape derivatlves[J]. Chinese Journal of Computational Mechanics, 1995, 12(2) | |
| Authors: | Zeng Qinghua |
| Abstract: | Computing the derivatives of complex mode shapes is regarded as calculating the struc-tural response to harmonic exciting in this paper.Using multiple modal accelerations andshifted-poles,a universal method to calculate the mode shape derivatives has been devel-oped. The method possesses the clear mathematical and physical meaning,and all availablemodal superposition methods would be directly obtained from the proposed method.Numeri-cal examples show that the method is correct and efficient. |
| Keywords: | modes of vibration/sensitivity analysis complex mode modal acceleration method |
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