| 基于遗传算法的约束阻尼梁减振优化分析 |
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| 引用本文： | 赵冬艳,石慧荣.基于遗传算法的约束阻尼梁减振优化分析[J].力学与实践,2011,33(4):13-16. |
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| 作者姓名： | 赵冬艳 石慧荣 |
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| 作者单位： | 1. 甘肃民族师范学院物理与水电工程系;2. 兰州交通大学机电工程学院，甘肃 兰州 730070; |
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| 摘 要： | 约束阻尼结构能有效减振, 但会增加结构的质量和体积, 基于此有必要对其
结构进行优化. 本文应用有限元软件ANSYS建立增设支撑层的约束阻尼梁模型, 根据模态应
变能原理提取约束阻尼梁的模态损耗因子, 并建立以阻尼段长度、约束层厚度、支撑层厚度、
阻尼段数目为设计变量的目标函数, 利用MATLAB多目标遗传算法进行优化运算. 计算结果表
明, 优化后的约束阻尼结构能够在引入质量较小情况下有效减小梁振动幅度, 使振动在较短
的时间内衰减.
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| 关 键 词： | 遗传算法 有限元 约束阻尼 优化 损耗因子 |
| 收稿时间： | 2010-10-29 |
REDUCTION OF VIBRATION AND OPTIMIZATION OF BEAMS WITH CONSTRAINED LAYER DAMPING PATCH BASED ON GENETIC ALGORITHM |
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| ZHAO Dongyan SHI Huirong.REDUCTION OF VIBRATION AND OPTIMIZATION OF BEAMS WITH CONSTRAINED LAYER DAMPING PATCH BASED ON GENETIC ALGORITHM[J].Mechanics and Engineering,2011,33(4):13-16. |
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| Authors: | ZHAO Dongyan SHI Huirong |
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| Institution: | ZHAO Dongyan~(*,1) SHI Huirong~2 *(Department of Physics & Hydroelectric Engineering,Gansu Normal University For Nationalities,Gansu Hezuo 747000,China) (School of Mechatronic Engineering,Lanzhou Jiaotong University,Lanzhou 730070,China) |
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| Abstract: | Though the constrained layer damping can reduce the vibration effectively,it increases the weight and the size of the structure.Thereby an optimization of the constrained layer damping treatment is necessary. In this paper,a new model of the partial stand-off constrained layer damping patch is established in the finite element software ANSYS.Based on modal strain energy principles,the modal loss factor of the proposed model can be found.An objective function related to the modal loss factors is constructed.... |
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| Keywords: | genetic algorithm finite element constrained layered damping optimization loss factor |
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