| 结构频率响应灵敏度计算及响应修改研究 |
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| 引用本文： | 董绍强,廖道训,陆永忠.结构频率响应灵敏度计算及响应修改研究[J].华中科技大学学报(自然科学版),2001,29(10):56-58. |
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| 作者姓名： | 董绍强 廖道训 陆永忠 |
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| 作者单位： | 华中科技大学机械科学与工程学院 |
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| 基金项目： | 国家“九五”攀登计划资助项目 (PD 95 2 1 90 3 ) |
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| 摘 要： | 提出了一种通过修改结构的设计参数从而修改结构频率响应幅值的方法，推导出了结构频率响应对设计参数的灵敏度计算公式。通过优化方法求解满足频率响应要求的设计参数的变化量，并采用模态缩减法减少结构重分析的计算量。算例表明，本方法具有较好的精度。
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| 关 键 词： | 结构动力修改 频率响应 灵敏度 优化 |
| 文章编号： | 1000-8616(2001)10-0056-03 |
| 修稿时间： | 2000年11月21 |
The Computation of the Sensitivity of Structural Frequency Response and Its Response Modification |
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| Dong Shaoqiang,Liao Daoxun,Lu Yongzhong.The Computation of the Sensitivity of Structural Frequency Response and Its Response Modification[J].JOURNAL OF HUAZHONG UNIVERSITY OF SCIENCE AND TECHNOLOGY.NATURE SCIENCE,2001,29(10):56-58. |
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| Authors: | Dong Shaoqiang Liao Daoxun Lu Yongzhong |
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| Institution: | Dong Shaoqiang Liao Daoxun Lu Yongzhong |
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| Abstract: | In this paper, a method is proposed to modify the structural frequency response magnitude through the modification of design parameters. The sensitivity of structure frequency response magnitude to design parameters is derived. The changes of design parameters are solved by using nonlinear optimization to satisfy the frequency response requirement. Model reduction is introduced to reduce computational cost. The accuracy of the proposed approach is demonstrated via numerical examples. |
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| Keywords: | structure dynamic modification frequency response sensitivity optimization |
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