대한용접접합학회:학술대회논문집 (Proceedings of the KWS Conference)
- 대한용접접합학회 2009년 추계학술발표대회
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- Pages.102-102
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- 2009
대형 컨테이너선의 해치 코밍 FCA 맞대기 용접부의 횡 방향 잔류응력 예측에 관한 연구
A Study on the Predicting Transverse Residual Stress at the ultra thick FCA butt weldment of hatch coaming in a Large Container Ship
- Shin, Sang-Beom (Hyundai Heavy Industries Co. Ltd) ;
- Lee, Dong-Ju (Hyundai Heavy Industries Co. Ltd) ;
- Park, Dong-Hwan (University of Ulsan, Institute of e-Vehicle Technology)
- 발행 : 2009.11.26
초록
The purpose of this study is to establish the predictive equation of transversal residual stress at the thick weldment of large container ship. In order to do it, the variables used for this study were restraint degree, yield strength of base material, thickness of weldment and welding heat input. Here, the level of restraint degree at the thick weldment of container ship having the various welding sequence was calculated using FEA. From the result, the h-type specimen was designed to simulate the level of restraint degree at the actual weldment of containership. With H-type test specimen designed, the effect of the variables on the distribution of transversal residual stress at the weldment in a container ship was evaluated using the comprehensive FEA. Based on the results, the predictive equations of mean value and the distribution of transverse residual stress in each location of residual stress were established using dimensional analysis and multiple-regression method. The validation of predictive equations was verified by comparing with measured results by XRD in the actual weldment of the ship.
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