Concurrent engineering solution for the design of ship and offshore bracket parts and fabrication process
2
조회
0
다운로드
1
인용
0
참고문헌
키워드
초록
Brackets in ships and offshore structures are added structures that can endure stress concentrations. In this study, a concurrent engineering solution was proposed, and a high strength low carbon cast steel alloy applicable to offshore structures was designed and developed. The yield strength and ultimate tensile strength of the designed steel were 480 and 600 MPa, respectively. The carbon equivalent of the steel was 0.446 with a weld crack susceptibility index of 0.219. The optimal structural design of the brackets for offshore structures was evaluated using ANSYS commercial software. The possibility of replacing an assembly of conventional built-up brackets with a single casting bulb bracket was verified. The casting process was simulated using MAGMAsoft commercial software, and a casting fabrication process was designed. For the proposed bulb bracket, it was possible to reduce the size and weight by approximately 30% and 50%, respectively, compared to the conventional type of bracket.
Abstract
Brackets in ships and offshore structures are added structures that can endure stress concentrations. In this study, a concurrent engineering solution was proposed, and a high strength low carbon cast steel alloy applicable to offshore structures was designed and developed. The yield strength and ultimate tensile strength of the designed steel were 480 and 600 MPa, respectively. The carbon equivalent of the steel was 0.446 with a weld crack susceptibility index of 0.219. The optimal structural design of the brackets for offshore structures was evaluated using ANSYS commercial software. The possibility of replacing an assembly of conventional built-up brackets with a single casting bulb bracket was verified. The casting process was simulated using MAGMAsoft commercial software, and a casting fabrication process was designed. For the proposed bulb bracket, it was possible to reduce the size and weight by approximately 30% and 50%, respectively, compared to the conventional type of bracket.
참고문헌 (7)
- Caron, R.N., "The tempering of Fe-C lath martensite", Metallurgical and Materials Transactions B, 3(9), pp.2381~2389 (1972)
- Kim, M. S., "The study of the elimination of the big bracket in the cargo holds of crude oil tanker", TEAM 2003 Conference Proceedings (2003)
- The shipbuilding & ocean engineering terminology, "Lee, S. H.", The Korean Marine Equipment Research Institute, 42~ (2008)
- Lee, J. H., "study on size optimization of the big bracket in the cargo hold of crude oil tanker", Proceeding of the Annual Autumn Meeting, Society of Naval Architects of Korea. Sancheong, Korea, pp.852~856 (2004)
- 이주성, "플랜지가 없는 선체 브라켓의 설계에 관한 연구", 대한조선학회 논문집, 43(2), pp.197~205 (2006), 대한조선학회
- "Offshore standard DNV-OS-B101 Metallic Materials, 2009", Section 4 Steel Castings, 33~37 (2009)
- Zia-Ebrahimi, F., "Mechanisms of tempered martensite embrittlement in medium-carbon steels", Acta Metallurgica, 32(10), pp.1767~1777 (1984)