噪声与振动控制2019，Vol.39Issue(3)：24-28,5.DOI:10.3969/j.issn.1006-1355.2019.03.005
600 kN超大推力电磁振动试验台动圈结构的模态分析与优化
Modal Analysis and Optimization of the Moving Coil in a 600 kN Electromagnetic Vibration Shaker
摘要
Abstract
The structure of moving coil in a 600kN super-thrust electromagnetic vibration shaker is studied. Finite element method is used to calculate the vibration modes and modal frequencies, especially the first-order axial modal. With the first-order axial frequency as a target, the moving coil structure is optimized. According to actual working conditions of the moving coil, the dynamic model is established and the constraint stiffness of support is defined. The modal analysis of the moving coil structure is completed. The EMP (Efficient Mass Percentage) is defined and proved successful in extracting the first-order axial frequency. Subsequently, the symmetrical modes and local modes among the modal analysis process are eliminated by the moving coil reduction model. The result is verified by the experiment. According to the sensitivity analysis of the first-order axial resonance frequency, the key substructure to increase the moving coil structure’s first-order axial frequency is found. By optimization, the first-order axial resonance frequency of the moving coil is obviously raised.关键词
振动与波/振动试验台/动圈结构/有限元分析/模态分析/优化设计Key words
vibration and wave/ vibration shaker/ moving coil/ finite element analysis/ modal analysis/ optimization分类
机械制造引用本文复制引用
仝宁可,杜环宇,李鸿光,刘营,孟光..600 kN超大推力电磁振动试验台动圈结构的模态分析与优化[J].噪声与振动控制,2019,39(3):24-28,5.基金项目
国家自然科学基金资助项目(51375212) （51375212）
江苏省道路载运工具新技术应用重点实验室基金资助项目(ZY2015009) （ZY2015009）
