한국해양대학교

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초대형 컨테이너 운반선의 추진축계 최적 배치에 관한 연구

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dc.contributor.author 공병현 -
dc.date.accessioned 2017-02-22T07:07:24Z -
dc.date.available 2017-02-22T07:07:24Z -
dc.date.issued 2013 -
dc.date.submitted 57014-11-26 -
dc.identifier.uri http://kmou.dcollection.net/jsp/common/DcLoOrgPer.jsp?sItemId=000002175963 ko_KR
dc.identifier.uri http://repository.kmou.ac.kr/handle/2014.oak/10297 -
dc.description.abstract Recently, the stiffness of designed marine propulsion shafting has been increasing remarkably according to increasing of ship’s size and the resultant increase of shaft diameters. On the other hand, hull structures have become more flexible as a result of scantling optimization and increase in ship length. Consequently, the alignment of a propulsion shafting system has become more sensitive to hull structures. And the alignment can be misleading especially when some facts are not taken into consideration. This fact has led to the bearing damage related inadequate analysis, inadequate practices of the shipyard in conducting the alignment and a lack of defined analytical criteria. Ideally, a shaft alignment analysis should be peformed for maximum allowable alignment tolerances, resulting in acceptable bearing reactions and misalignment angles under all operating conditions of the vessel(loaded, ballast, hot and cold) and thermal deformation of engine bed plate. The purpose of this paper is to verify a reliable optimum shafting alignment for extra large container vessel. Therefore shafting design and installation to static and running condition for the optimal shafting installation of extra large container vessels with the long shaft would be introduced. Futhermore, considering the effects of main engine bearing's numbers and thermal deformation, the calculation was performed. Also the results were investigated when vertical direction stiffness is considered to linear and rigid support. As a result, off-set of the long shaft was few changes, but in case of short shaft, the bearing reaction force of MB1 was possible to unload state or negative load condition (-) due to off-set's changes by elasticity. And at the installed shafting on the basis of the shafting alignment calculation process, design results were compared with the value of that by the jack-up method to measure the reaction force of each bearing in order to clarify the paper. Conclusively this vessel measured at the bearing reaction force showed that close to the design value. But first of all, the shafting alignment process mentioned is to be carried out under the effective control on the basis of optimal design in order to derive satisfactory results in the field. Lastly this paper introduced the shafting alignment analysis result by using programs of H classification society and shaft alignment through the eyes of the optimal design strategies was sought. -
dc.description.tableofcontents 제1장 서 론 1 1.1 연구의 배경 1 1.2 연구의 목적 3 1.3 논문의 내용 및 구성 4 제2장 축계 정렬의 이론적 해석 5 2.1 기본식의 유도 5 2.1.1 횡하중과 모멘트하중을 받는 부등 단면보의 절점방정식 5 2.1.2 횡하중과 모멘트하중을 받는 보의 강성매트릭스 8 2.2 절점 방정식의 해법 9 2.2.1 절점 방정식의 해법 9 2.2.2 지점의 처리 10 2.3 반력 영향 계수의 계산 11 제3장 축계 정렬 과정 13 3.1 가견투 14 3.2 경사 보링 15 3.3 엔진 베드플레이트 프리 새깅 16 3.4 갭색 17 3.5 크랭크 샤프트 디플렉션 측정 20 제4장 잭업에 의한 축계 베어링의 반력 측정 22 4.1 잭업 방법과 장단점 22 4.2 잭업 곡선 분석 24 4.3 메인 베어링의 잭업 방법 26 4.4 최후부 메인 엔진 베어링 측정 방법 29 4.5 전부 선미관 베어링과 중간축 베어링 측정 방법 34 4.6 잭업 데이터를 이용한 실제 베어링 지지 하중 계산 방법 36 제5장 실선 축계의 최적 배치 방안 연구 38 5.1 이론에 의한 축계 베어링 반력 해석 39 5.2 축계 배치 최적화 안 42 5.2.1 주기관 베어링개수 고려에 따른 반력 비교 분석 42 5.2.2 열팽창 효과 고려에 따른 반력 비교 분석 44 5.2.3 베어링 최대 허용하중을 고려한 S/T 베어링의 경사 계산 48 5.2.4 베어링 탄성체 지지를 고려한 베어링 반력 분석 51 5.2.5 실선 축계의 베어링 반력 측정 60 제6장 결 론 63 참고 문헌64 -
dc.language kor -
dc.publisher 한국해양대학교 대학원 -
dc.title 초대형 컨테이너 운반선의 추진축계 최적 배치에 관한 연구 -
dc.title.alternative A study on the optimal alignment of propulsion shafting for extra large container carrier -
dc.type Thesis -
dc.date.awarded 2013-02 -
dc.contributor.alternativeName Kong -
dc.contributor.alternativeName Byoung Hyun -
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