| 电子设备减振设计的随机振动分析 |
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| 作者姓名： | 崔冠宇 李亮 |
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| 作者单位： | 北京遥测技术研究所; |
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| 摘 要： | 以带减振器的电子设备为例,数字仿真和实物试验相结合,提出用强制位移法模拟预紧力的方法,对数字样机进行随机振动分析。介绍数字样机模型简化原则、网格划分技巧及重要参数的选取等,用模态试验验证了有限元模型建立的准确性,用强度校核法对仿真分析结果进行计算,判断结构设计的正确性。此强制位移法可以在计算机上仿真带减振器电子设备受到外部载荷时的动态响应,便于在设计阶段及时发现问题,避免物理样机试验后的重大返工。
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| 关 键 词： | 减振器 有限元法 模态分析 随机振动分析 强度校核 |
Random Vibration Analysis of Electronic Equipment with Dampers |
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| Authors: | Cui Guanyu Li Liang |
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| Institution: | Cui Guanyu,Li Liang |
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| Abstract: | Combining the simulation with experiment,the random vibration analysis of the digital prototype of the electronic equipment with dampers is carried out,and the method of substituting prescribed displacement for pre-tightening loads is brought forward and applied in this paper.The principles of model simplification,techniques of grid division and the selection of key parameters are introduced,and then the correctness of finite element model is testified by modal experiments.Finally,through the calculation of... |
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| Keywords: | Damper Finite element method Modal analysis Random vibration analysis Strength checking |
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