中国飞机强度研究所 强度与结构完整性全国重点实验室,西安 710065
JIANG Yongping, E-mail:421268534@qq.com
收稿:2024-06-11,
修回:2024-07-17,
纸质出版:2026-02-15
移动端阅览
姜永平,刘继军,李凯翔.机载设备电子器件振动抑制方法及试验验证[J]. 机械强度,2026,48(2):97-104.
JIANG Yongping,LIU Jijun,LI Kaixiang. Vibration suppression method and test validation of electronic devices for airborne equipments[J]. Journal of Mechanical Strength,2026,48(2):97-104.
姜永平,刘继军,李凯翔.机载设备电子器件振动抑制方法及试验验证[J]. 机械强度,2026,48(2):97-104. DOI: 10.16579/j.issn.1001.9669.2026.02.012.
JIANG Yongping,LIU Jijun,LI Kaixiang. Vibration suppression method and test validation of electronic devices for airborne equipments[J]. Journal of Mechanical Strength,2026,48(2):97-104. DOI: 10.16579/j.issn.1001.9669.2026.02.012.
目的
2
针对机载设备电子器件在振动环境下易失效的问题,提出一种振动抑制方法,为器件抗振设计提供技术支撑。
方法
2
首先,通过扫频试验获取器件加速度耐受极限,建立机载设备多层级有限元模型并开展随机振动分析。其次,基于Steinberg法明确优化方向,以固有频率最大为目标,采用Tosca软件进行支承面板构型优化,借助Isight软件结合多岛遗传算法完成尺寸优化。最后,加工样机并通过振动试验,验证方法的有效性。
结果
2
优化后,器件安装面板最大加速度均方根值下降19.91%,传输率降至1.56,与支承面板的耦合作用显著减弱,且设备质量基本不变,试验中未出现器件失效现象,振动抑制效果显著。
Objective
2
Aiming at the problem that electronic devices of airborne equipment are prone to failure in vibration environments
a vibration suppression method was proposed to provide technical support for the anti-vibration design of devices.
Methods
2
Firstly
the acceleration tolerance limit of the device was obtained through sweep frequency tests
and a multi-level finite element model of the airborne equipment was established to carry out random vibration analysis. Secondly
the optimization direction was determined based on the Steinberg method. With the goal of maximizing the natural frequency
Tosca software was used for the configuration optimization of the support panel
and Isight software combined with the multi-island genetic algorithm was used to complete the size optimization. Finally
a prototype was fabricated and the effectiveness of the method was verified through vibration tests.
Results
2
After optimization
the maximum acceleration root mean square of the device mounting panel decreased by 19.91%
the transmission rate dropped to 1.56
the coupling effect with the support panel was significantly weakened
and the equipment quality remained basically unchanged. No device failure occurred in the test
and the vibration suppression effect was remarkable.
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