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논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 발행연도
- 2016.4
- 수록면
- 11 - 15 (5page)
이용수
초록· 키워드
오류제보하기
FE analyses for weldment of ship structure are required for various reasons such as stress concentration for bead tow, residual stress and distortion after welding, and hydrogen diffusion for prediction of low temperature crack. These analyses should be done by solid element modeling, but most of ship structures are modeled by shell element. If we are able to make solid element in the shell element FE modeling it is easily to solve the requirement for solid elements in weld analysis of large ship structures. As the nodes of solid element cannot take moments from nodes of shell element, these two kinds of element cannot be used in one model by conventional modeling.
The PSCM (Perpendicular shell coupling method) can connect shell to solid. This method uses dummy perpendicular shell element for transferring moment from shell to solid. The target of this study is to develop a FE pre-processing system applicable at welding at ship structure by using PSCM. We also suggested glue-contact technique for controlling element numbers and element qualities and applied it between PSCM and solid element in automatic pre-processing system. The FE weldment modeling through developed pre-processing system will have rational stiffness of adjacent regions. Then FE results can be more reliable when turn-over of shipblock with semi-welded state or ECA (Engineering critical assessment) of weldment in a ship-block are analyzed.
The PSCM (Perpendicular shell coupling method) can connect shell to solid. This method uses dummy perpendicular shell element for transferring moment from shell to solid. The target of this study is to develop a FE pre-processing system applicable at welding at ship structure by using PSCM. We also suggested glue-contact technique for controlling element numbers and element qualities and applied it between PSCM and solid element in automatic pre-processing system. The FE weldment modeling through developed pre-processing system will have rational stiffness of adjacent regions. Then FE results can be more reliable when turn-over of shipblock with semi-welded state or ECA (Engineering critical assessment) of weldment in a ship-block are analyzed.
목차
Abstract
1. 서론
2. PSCM 소개 및 개정적용
3. 시스템 개발을 위한 용접부 정의
4. Case Study
5. 결론
References
참고문헌 (11)
참고문헌 신청
Ha, Y. S., 2008. Development of Thermal Distortion Analysis Method on Large Shell Structure Using Inherent Strain as Boundary Condition. Journal of the Society of Naval Architects of Korea, 45(1), 93-100
Ha, Y. S., 2013. Analytical Methodology Obtaining an Optimal Welding Sequence for Least Distortion of Welded Structure, Journal of KWJS, 31(3), 54-59 (in Korean)
Ha, Y. S. & Yang, J. H., 2010. Development of Distortion Analysis Method for Multi-pass Butt-welding Based on Shell Element, Journal of KWJS, 28(1), 54-59 (in Korean)
Jin, H. K. Lee, D. J. & Shin, S. B., 2010. Effect of Distance and Restraint Degree between Fillet and Butt Weldment on Residual Stress Redistribution at each Weldment, Journal of KWJS, 28(3), 59-64
Jang, C. D. & Lee, C. H., 2002. A Study on the Prediction and Control of Welding Deformations of Ship Hull Blocks. Journal of the Society of Naval Architects of Korea, 37(2), 127-136
Ha, Y. S., 2013. Analytical Methodology Obtaining an Optimal Welding Sequence for Least Distortion of Welded Structure, Journal of KWJS, 31(3), 54-59 (in Korean)
Ha, Y. S. & Yang, J. H., 2010. Development of Distortion Analysis Method for Multi-pass Butt-welding Based on Shell Element, Journal of KWJS, 28(1), 54-59 (in Korean)
Jin, H. K. Lee, D. J. & Shin, S. B., 2010. Effect of Distance and Restraint Degree between Fillet and Butt Weldment on Residual Stress Redistribution at each Weldment, Journal of KWJS, 28(3), 59-64
Jang, C. D. & Lee, C. H., 2002. A Study on the Prediction and Control of Welding Deformations of Ship Hull Blocks. Journal of the Society of Naval Architects of Korea, 37(2), 127-136
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UCI(KEPA) : I410-ECN-0101-2016-581-002908226