CAJ | 학술논문

焊接接头疲劳应力分析方法多种多样，热点应力法能很好通过有限元技术进行求解，但其受到很多因素的影响。本文通过有限元法在验证了热点应力法对网格非常敏感和外推法对其影响不大的情况下，重点分析了焊趾上峰值路径和中心路径取外推点进行热点求解所得热点应力的偏差，结果表明不同取值路径下的热点应力相差不大，对热点应力的影响有限。
한접접두피로응력분석방법다충다양，열점응역법능흔호통과유한원기술진행구해，단기수도흔다인소적영향。본문통과유한원법재험증료열점응역법대망격비상민감화외추법대기영향불대적정황하，중점분석료한지상봉치로경화중심로경취외추점진행열점구해소득열점응력적편차，결과표명불동취치로경하적열점응력상차불대，대열점응력적영향유한。
there were many methods on fatigue stress analysisof welded joint , hot spot stress method is fit for finite element technology , but it is effected by many factors .In this paper , grid sensitivity and extrapolation insensitivity were verified by FEA .And hot spot stress of peak path and center path were solved .The result show that the bias of hot spot stress is a little under different paths ,no affect for hot spot stress .