机载电子设备振动传递率计算模型研究  

Research on vibration transmissibility calculation model for airborne electronic equipment

作　　者：刘治虎 醋强一 董进喜 成鑫 常向廷 裴晓辉 LIU Zhihu;CU Qiangyi;DONG Jinxi;CHENG Xin;CHANG Xiangting;PEI Xiaohui(AVIC Xi’an Aeronautics Computing Technique Research Institute,Xi’an 710068,China)

机构地区：[1]中国航空工业集团公司西安航空计算技术研究所,西安710068

出　　处：《机械强度》2025年第3期90-95,共6页Journal of Mechanical Strength

基　　金：国家科技重大专项(2017-V-0014-0066)。

摘　　要：为解决机载电子设备随机振动传递率计算准确度问题,首先,通过试验验证了STEINBERG正弦振动传递率基本模型和IRVINE随机振动传递率基本模型,发现IRVINE随机振动传递率模型的准确度有改进的空间。因此,在“三段法”的基础上将随机振动4σ、5σ瞬时加速度的影响综合考虑,提出更全面的“五段法”;然后,结合机载电子设备特点,修正了模型的结构疲劳系数。结果表明,所提随机振动传递率计算模型与实测值的误差小于5%,更逼近实测值,证明所提模型更准确。In order to solve the problem of the accuracy of the random vibration transmissibility calculation of airborne electronic equipment,the basic STEINBERG sinusoidal vibration transmissibility model and the IRVINE random vibration transmissibility model were firstly verified through tests,and it was found that there was room for improvement in the accuracy of the IRVINE random vibration transmissibility model.Therefore,on the basis of the"Three-interval method",the effects of 4σand 5σtransient acceleration of random vibration were taken into consideration,and a more comprehensive"Five-interval method"was proposed;then,the structural fatigue coefficients of the model were corrected by combining with the characteristics of the airborne electronic equipments.The results show that the error between the proposed random vibration transmissibility calculation model and the measured value is less than 5%,which is closer to the measured value,proving that the proposed model is more accurate.

关 键 词：机载电子设备 正弦振动 随机振动 振动传递率 计算模型 

分 类 号：TH123[机械工程—机械设计及理论]