튜브 용접부의 용접변형 및 잔류응력에 관한 연구study on welding distortion and residual stress for tubular welded jointA진형국Hyung-Kook Jin신상범Sang-Beom Shin1969-이동주Dong-Ju Lee박동환Dong-Hwan Park텍스트학술논문서울ulk대한용접·접합학회20121031단행자료korapplication/pdf6 p.accessborn digitalThe purpose of this study is to evaluate the distortion and the residual stress of GTA tubular welds between tube and head. In order to do it, the heat input model for GTA welding process was first developed by experiment and FE analyses. The welding distortion and the residual stress distribution of the tubular welds according to welding pass and various restraint degrees were evaluated by using FEA with the heat input model. From FEA results, it was found that the residual stress and the radial distortion at the weld toe of tube part decrease with a decrease in the number of welding pass. However, the maximum residual stresses in each direction of tubular welds are almost constant regardless of the external restraint degree. It was mainly due to the high internal restraint of the welds.Abstract1. 서론2. 해석 모델 및 방법3. 온도, 잔류응력 및 용접변형 해석 결과4. 결론참고문헌일반이용자연구논문581.505대한용접·접합학회지第30卷 第5號 (20121031), p. 445-4501225-6153http://www.dbpia.co.kr/view/ar_view.asp?arid=2031473국립중앙도서관4한국G701:C-00060354167Welding distortionResidual stressRestraint degreeTubular joint국립중앙도서관2013082015115720130924130929CDTS20130220531CNTS-00060354167