电子机械工程
電子機械工程
전자궤계공정
ELECTRO-MECHANICAL ENGINEERING
2012年
5期
41-43,46
,共4页
刘国玺%郑元鹏%霍治生%金超
劉國璽%鄭元鵬%霍治生%金超
류국새%정원붕%곽치생%금초
65m天线%疲劳寿命%S-N曲线%全寿命分析
65m天線%疲勞壽命%S-N麯線%全壽命分析
65m천선%피로수명%S-N곡선%전수명분석
65 m antenna%fatigue life%S-N curve%life cycle analysis
文中阐述了疲劳破坏在工程中的危害性和疲劳寿命分析的重要性,论述了疲劳寿命分析的基本原理。建立了65 m天线的总体和局部的有限元模型,给出了疲劳寿命分析的边界条件。以实验数据为基础,经过处理和转化,得到了42CrMo材料的S-N曲线和Gerber曲线。对65 m天线进行了疲劳寿命分析,得到了疲劳寿命结果和危险点的具体位置,对结构设计进行了改进。结果表明：进行疲劳寿命分析,是解决天线工程上安全性和可靠性问题的有效手段。
文中闡述瞭疲勞破壞在工程中的危害性和疲勞壽命分析的重要性,論述瞭疲勞壽命分析的基本原理。建立瞭65 m天線的總體和跼部的有限元模型,給齣瞭疲勞壽命分析的邊界條件。以實驗數據為基礎,經過處理和轉化,得到瞭42CrMo材料的S-N麯線和Gerber麯線。對65 m天線進行瞭疲勞壽命分析,得到瞭疲勞壽命結果和危險點的具體位置,對結構設計進行瞭改進。結果錶明：進行疲勞壽命分析,是解決天線工程上安全性和可靠性問題的有效手段。
문중천술료피로파배재공정중적위해성화피로수명분석적중요성,논술료피로수명분석적기본원리。건립료65 m천선적총체화국부적유한원모형,급출료피로수명분석적변계조건。이실험수거위기출,경과처리화전화,득도료42CrMo재료적S-N곡선화Gerber곡선。대65 m천선진행료피로수명분석,득도료피로수명결과화위험점적구체위치,대결구설계진행료개진。결과표명：진행피로수명분석,시해결천선공정상안전성화가고성문제적유효수단。
In this paper,the harm of fatigue failure and the essentiality of fatigue life analysis in engineering systems are discussed,the principle of fatigue life is discussed.According to the whole finite element(FE) model and the local FE model,the boundary condition of fatigue life analysis is presented.Based on the test data,the S-N curve and Gerber curve of 42CrMo steel are gained after data processing and transforming.By the fatigue life analysis of 65 m radio telescope,the fatigue life result and the detailed dangerous location are obtained,the structure design of 65 m antenna is improved.Results show that fatigue life analysis is effective for solving the problem of safty and reliability in antenna engineering.
