航天器环境工程2025，Vol.42Issue(3)：307-313,7.DOI:10.12126/see.2024081
基于Miner损伤理论的星载固面天线正弦振动疲劳寿命预测
Fatigue life prediction of a space-borne fixed parabolic antenna under sinusoidal vibration via Miner's damage theory
杨建江 1吴文友 1刘双荣1
作者信息
- 1. 上海航天电子技术研究所,上海 201109
- 折叠
摘要
Abstract
To address the issue of fatigue damage in space-borne fixed parabolic antennas under sinusoidal vibration conditions(e.g.,during launch),this study applies Miner's linear cumulative damage theory.An antenna finite element model was developed,and modal analysis was conducted using the Lanczos algorithm and validated through modal testing.The modal superposition method was applied for both sinusoidal vibration simulations and experimental verification,enabling fatigue life prediction for critical antenna components.The results indicate that all key components'fatigue damage factors are well below the engineering tolerance threshold of 0.1,confirming the reliability and practical applicability of the proposed approach.This study provides theoretical and practical guidance for fatigue life assessment and structural design of space-borne antennas in complex vibration environments.关键词
星载固面天线/正弦振动/疲劳寿命预测/Miner线性损伤理论/模态试验/动应力Key words
space-borne fixed parabolic antenna/sinusoidal vibration/fatigue life prediction/Miner's linear damage theory/modal testing/dynamic stress analysis分类
航空航天引用本文复制引用
杨建江,吴文友,刘双荣..基于Miner损伤理论的星载固面天线正弦振动疲劳寿命预测[J].航天器环境工程,2025,42(3):307-313,7.
