CAJ | 학술논문

基于断裂力学理论和有限元分析，研究T型接头横向埋藏裂纹扩展特性，实现了双向拉伸载荷作用下T型接头横向埋藏裂纹扩展形状变化的数值模拟。结果表明：T型接头横向埋藏裂纹扩展至结构表面时的形状为近圆形，与裂纹埋藏位置和初始形状无关；埋藏于焊趾端部板材中的裂纹扩展快于埋藏于焊缝中的裂纹扩展。
기우단렬역학이론화유한원분석，연구T형접두횡향매장렬문확전특성，실현료쌍향랍신재하작용하T형접두횡향매장렬문확전형상변화적수치모의。결과표명：T형접두횡향매장렬문확전지결구표면시적형상위근원형，여렬문매장위치화초시형상무관；매장우한지단부판재중적렬문확전쾌우매장우한봉중적렬문확전。
This paper has investigated the transverse embedded crack propagation behavior of T welded joint based on fracture theory and finite element analysis. Numerical simulation of embedded crack propagation shape change under biaxial tension load has been established. The results show that the T welded joint transverse embedded crack shapes change into near circular crack with regardless of embedded location and initial crack shape. The propagation rate of crack embedded in plate beneath the weld toe is faster than that embedded in weld.