哈尔滨工业大学学报（英文版）2002，Vol.9Issue(2)：161-165,5.
Structural optimization of precision instruments through modal analysis
Structural optimization of precision instruments through modal analysis
1
作者信息
- 1. Dept.of Mechanical Engineering and Automatism,Harbin Institute of Technology,Harbin 150001,China;Dept.of Mechanical Engineering and Automatism,Harbin Institute of Technology,Harbin 150001,China
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摘要
Abstract
In order to improve the dynamic stability of precision instruments during the design process,a compositive design method based on modal analysis of structure is proposed.With uniform boundary conditions and material characters,the results of Finite Element Analysis(FEA)vary with models.It should be checked whether the model is correctly simplified.Modal experiments can be used for such purpose.The method combines the high efficiency and agility of FEA with the reliability and accuracy of experiments,and avoids the drawbacks of FEA or experiments,such as uncertainty of FEA and high cost of experiments.Taking rotor-frame structure as an example,this method is applied as follows: First the modal characters of structure are analyzed with FEA,and then the natural frequencies of the structure are tested by experiments to check the reliability of FEA method,and finally the design scheme is optimized by modifying structure parameters with confirmed FEA.关键词
precision instrument/dynamic character/finite element analysis/modal testKey words
precision instrument/dynamic character/finite element analysis/modal test分类
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..Structural optimization of precision instruments through modal analysis[J].哈尔滨工业大学学报（英文版）,2002,9(2):161-165,5.
