某机载设备隔振安装设计分析与试验研究

目的提高机载设备典型U型谱环境下的抗振性能。方法采用数值法分析典型U型谱的隔振响应分析,确定隔振系统参数,设计隔振系统的刚度和阻尼,最后通过试验验证隔振器的性能及使用寿命。结果通过分析确定了给定典型U型谱的隔振设计最佳固有频率段为70~130 Hz,完成了某机载设备用隔振器的载荷计算,刚度和阻尼设计,并用试验验证了隔振器的性能及耐久性能。结论所设计的隔振系统满足该机载设备隔振安装的性能和振动耐久性要求,有效地提高了机载设备在U型振动谱环境下的抗振性能。

Mounted Design and Test for Vibration Isolation of Airborne Equipment

Objective To improve anti-vibration performance of airborne equipment under the typical U vibration spectrum. Methods Numerical analysis was used to analyze isolation response and identify parameters of the isolation system. Stiffness and damping of the isolation system were designed according to the numerical results. At last, performance and service life of the vibration isolator was verified through test. Results The best nature frequency segment for vibration isolation design of specified typical U spectrum was 70 Hz-130 Hz. The load, stiffness and damping of each isolator were designed. Performance and durance of the vibration isolator was verified through test. Conclusion Performance and vibration durability of the designed isolation system can meet the requirements on anti-vibration performance and duration of airborne equipment and effectively improve the anti-vibration performance of airborne equipment in vibration spectrum.