雷达科学与技术2024，Vol.22Issue(2)：226-230,5.DOI:10.3969/j.issn.1672-2337.2024.02.013
某型机载雷达连接螺栓振动疲劳特性研究
Random Vibration Fatigue Analysis for Connecting Bolts of an Airborne Radar
袁汉钦 1赵蒙1
作者信息
- 1. 海军装备部驻合肥地区军事代表室,安徽合肥 230088
- 折叠
摘要
Abstract
In order to study the fatigue characteristics of the connecting bolts at key parts of an airborne radar un-der random vibration loadings,a method combining finite element analysis and empirical formulas has been employed to evaluate the safety factors of two kinds of connecting bolts.The stress situation of the bolts considering preload under random vibration is extracted by simulation,and the fatigue safety factors are calculated by the minimum stress method.The results show that the bolt load is mainly affected by the main vibration mode of the structure under the vibration ex-citation in this direction.Besides,the eccentricity of the structure's center of gravity will significantly intensify the bolt load.The research results can provide reference for the selection of connecting bolts and the overall fatigue resistance and safety design of the structure.关键词
螺栓力/随机振动/振动疲劳/功率谱密度Key words
bolt force/random vibration/vibration fatigue/power spectral density分类
信息技术与安全科学引用本文复制引用
袁汉钦,赵蒙..某型机载雷达连接螺栓振动疲劳特性研究[J].雷达科学与技术,2024,22(2):226-230,5.
