| 大型工程结构的有限元动力模型优化法 |
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| 引用本文： | 陈木兰,宋海平.大型工程结构的有限元动力模型优化法[J].航空学报,1996,17(Z1):104-108. |
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| 作者姓名： | 陈木兰 宋海平 |
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| 作者单位： | 南京航空航天大学无人机研究所, 南京, 210016 |
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| 摘 要： | 研究以振动试验测得的飞机结构固有频率为目标值的有限元动力模型的优化问题。应用了一种单元组合法，该方法基于动力平衡方程以及正交性。通过修改质量矩阵的元素来优化，使计算出的固有频率与试验测得的频率值基本一致，并成功地应用于无人机水平尾翼模型上，效果良好
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| 关 键 词： | 优化大型结构有限元法 |
| 收稿时间： | 1995-12-29 |
| 修稿时间： | 1996-04-20 |
OPTIMIZATION METHOD OF THE FINITE ELEMENT DYNAMIC MODEL OF LARGE STRUCTURES |
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| Chen Mulan,Song Haiping.OPTIMIZATION METHOD OF THE FINITE ELEMENT DYNAMIC MODEL OF LARGE STRUCTURES[J].Acta Aeronautica et Astronautica Sinica,1996,17(Z1):104-108. |
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| Authors: | Chen Mulan Song Haiping |
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| Institution: | Research Institute of Pilotless Aircraft, Nanjing Unversity of Aeronautics and Astronautics,Nanjing 210016 |
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| Abstract: | This study is concerned with the optimization of the finite element dynamic model of large structures. The objective value is the natural frequency measured by vibration tests.Based on the dynamic balance equation and orthogonality, the method of combinatorial elements is used to make the agreement of the computational natural frequency with the tested natural frequency by modifying the elements of the mass matrix. The method has been successfully applied in the tailplane of an unmanned aircraft. |
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| Keywords: | optimization large structure finite element method |
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