Research on vibration transmissibility calculation model for airborne electronic equipment

LIU Zhihu; CU Qiangyi; DONG Jinxi; CHENG Xin; CHANG Xiangting; PEI Xiaohui

doi:10.16579/j.issn.1001.9669.2025.03.011

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Research on vibration transmissibility calculation model for airborne electronic equipment

·Vibration·Noise·Monitoring·Diagnosis· | 更新时间：2025-04-03

- Research on vibration transmissibility calculation model for airborne electronic equipment
- Journal of Mechanical Strength Vol. 47, Issue 3, Pages: 90-95(2025)
- 作者机构：
  
  中国航空工业集团公司西安航空计算技术研究所，西安 710068
- 作者简介：
  
  LIU Zhihu, E-mail: huanzhinan2004@163.com
- 基金信息：
  
  National Science and Technology Major Project(2017-V-0014-0066)
- DOI：10.16579/j.issn.1001.9669.2025.03.011
  CLC： TH123
- Received：27 September 2024，
  
  Revised：08 November 2024，
  
  Published：15 March 2025
- 稿件说明：
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刘治虎，醋强一，董进喜，等.机载电子设备振动传递率计算模型研究［J］. 机械强度，2025，47（3）：90-95.

LIU Zhihu，CU Qiangyi，DONG Jinxi，et al.Research on vibration transmissibility calculation model for airborne electronic equipment［J］. Journal of Mechanical Strength，2025，47（3）：90-95.
刘治虎，醋强一，董进喜，等.机载电子设备振动传递率计算模型研究［J］. 机械强度，2025，47（3）：90-95. DOI： 10.16579/j.issn.1001.9669.2025.03.011.

LIU Zhihu，CU Qiangyi，DONG Jinxi，et al.Research on vibration transmissibility calculation model for airborne electronic equipment［J］. Journal of Mechanical Strength，2025，47（3）：90-95. DOI： 10.16579/j.issn.1001.9669.2025.03.011.

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

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、

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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

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，更逼近实测值，证明所提模型更准确。

Abstract

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

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and

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transient 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

Keywords

references

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