X型焊缝接头焊接缺陷处的应力集中  

Stress Concentration Due to the Weld Defect of a X-Type Welded Joint

作　　者：揭敏[1] 杨挺青[1] 

机构地区：[1]华中理工大学,武汉430074

出　　处：《机械》2001年第1期10-11,14,共3页Machinery

基　　金：国家自然科学基金项目! (1963 2 0 3 0 )

摘　　要：用有限元法计算了X型焊缝接头处一种可能的三维焊接缺陷所导致的应力集中 ,定量分析了缺陷尺寸的变化对应力集中系数的影响 ,结果表明缺陷高度和宽度的增加将导致应力集中系数的增大 ,但其增大趋势逐渐变缓 ;而缺陷厚度的增加则使应力集中系数减小。Stress concentration due to a possible tree dimensional weld defect of a X type welded joint is computed via FEM. Effects of the defect size on the stress concentration factor (SCF) are quantitatively analysed. Results show that adding of the height and width of the defect will lead to the increasing of the SCF, but the increasing tendency turns to smooth; while adding of the thickness of defect will lessen the SCF.

关 键 词：X型焊缝 应力集中 焊接接头 焊接缺陷 

分 类 号：TG404[金属学及工艺—焊接] TG441.7