| 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): |
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| 复振型导数计算的移位多次模态加速法 |
| A shifted-poles and multiple modal acceleration method for computing complex mode shape derivatlves |
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| DOI：10.7511/jslx19952027 |
| 中文关键词: 灵敏度分析，振型，复模态，模态加速法 |
| 英文关键词:modes of vibration/sensitivity analysis,complex mode,modal acceleration method |
| 基金项目:国家自然科学基金 |
| 曾庆华 |
| 南京航空航天大学振动工程研究所 |
| 摘要点击次数: 1066 |
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| 中文摘要: |
| 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。 |
| 英文摘要: |
| 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. |
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