• CN:11-2187/TH
  • ISSN:0577-6686

›› 2000, Vol. 36 ›› Issue (4): 109-112.

• 论文 • 上一篇    

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多层包扎式筒体焊接缺陷区的裂纹分析

任德亮;王云程;陈恺;杨杰   

  1. 石家庄铁道学院材料研究所;河北科技大学
  • 发布日期:2000-04-15

CRAKING ANALYSIS OF MULTILAYER WARPING CYLINDER FOR THE REGION WITH WELD DEFECTS

Ren Deliang;Wang Yuncheng;Chen Kai;Yang Jie   

  1. Shijiazhuang Railway Institute Hebei University of Science & Technology
  • Published:2000-04-15

摘要: 针对多层包扎式合成塔筒体环焊缝两侧的筒节层板贴合不良,出现结构不连续,引用壳体理论对缺陷区的变形和应力进行了计算,经分析论证推断出于高度应力集中的焊接缺陷处将萌生出疲劳微裂纹。因而必须采取严格的焊接工艺,以防止产生焊接缺陷。

关键词: 多层包扎式筒体, 焊接缺陷, 疲劳裂纹, 应力分析

Abstract: Circumferential weld of miltilayer warping high pressure vessel had defects out of the allowance on its both sides and uncontinuous structure. Based on the data of deformation and stress analysis of defect area obtained from theory of shell, a comprehensive analysis is carried out and then got a conclusion that fatigue cracking would occur in the weld part of high stress concentration. Therefore, a strict welding technology must be adopted, in order to avoid weld defects.

Key words: Fatigue cracking, Miltilayer warping cylinder, Stress analysis, Weld defects

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