摘要
采用有限元法研究平焊焊接的焊接角度对焊接结构连接件应力分布的影响,进而采用名义应力法分析其对结构疲劳性能的影响。结果发现,采用平焊工艺时,焊接角越大,应力集中越严重,焊接件的疲劳性能越差。焊接件疲劳寿命与焊接角之间呈现出指数衰减关系。
The effect of welding angle on the stress distribution of the welding zone was analyzed. The fatigue life of the weld structure was determined by normal stress approach. The results show that a bigger welding angle induces a more severe stress concentration, which reduce greatly the fatigue life of the welded structure. The fatigue life of the welding structure exhibits an exponential decay function of the welding angle.
出处
《热加工工艺》
CSCD
北大核心
2009年第23期163-165,共3页
Hot Working Technology
基金
国家自然科学基金资助项目(50775183
50805118)
关键词
焊接结构
焊接角
应力集中
疲劳性能
welded strucatre
welding angle
stress concentration
fatigue performance