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논문 기본 정보
- 자료유형
- 학위논문
- 저자정보
- 지도교수
- 이득우
- 발행연도
- 2014
- 저작권
- 부산대학교 논문은 저작권에 의해 보호받습니다.
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2014
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Recently, international environmental agreements have been emerged in order to deal with the environmental problems efficiently and they act as a new trade barrier. Therefore, many researchers are interested in increasing the machinery efficiency and reducing pollutions by using surface texturing technology.
In this research, the lubrication characteristics of a journal bearing and a crank shaft pin turner bearing with dimples have been studied. When the depth and the number of dimples were increased, load carrying capacities and friction coefficient were decreased. But the distribution of dimples can help to minimize the decreased load carrying capacities.
In case of a crank shaft pin turner bearing with dimple, the pressure of a bearing has been increased about 1.5 times than a bearing with no dimple. It might be the sealing effect and the effect is more serious when the dimple depth is increased. And dimples can make the run-out of a journal reduced, so it can be possible that the bearing operates accurately. Therefore, it is important to consider depth, number and distribution of dimples when designing a journal bearing.
In this research, the lubrication characteristics of a journal bearing and a crank shaft pin turner bearing with dimples have been studied. When the depth and the number of dimples were increased, load carrying capacities and friction coefficient were decreased. But the distribution of dimples can help to minimize the decreased load carrying capacities.
In case of a crank shaft pin turner bearing with dimple, the pressure of a bearing has been increased about 1.5 times than a bearing with no dimple. It might be the sealing effect and the effect is more serious when the dimple depth is increased. And dimples can make the run-out of a journal reduced, so it can be possible that the bearing operates accurately. Therefore, it is important to consider depth, number and distribution of dimples when designing a journal bearing.
목차
List of Figures CList of Tables FNomenclature G제 1장 서론 11.1 연구 배경 11.2 연구 동향 31.3 연구 목적 및 내용 5제 2장 이론적 배경 82.1 지배방정식 82.1.1 가정 82.1.2 레이놀즈 방정식 92.1.3 유막두께 방정식 112.1.4 무차원 지배방정식 112.1.5 유정압 베어링의 압력 계산식 122.2 해석 모델 152.3 해석 조건 162.3.1 저널베어링 162.3.2 크랭크 샤프트 핀 터너 유정압 베어링 162.4 해석 방법 18제 3장 결과 및 고찰 323.1 저널베어링 323.1.1 딤플 깊이의 영향 323.1.2 딤플 수의 영향 333.2 크랭크 샤프트 핀 터너 유정압 베어링 373.2.1 딤플 깊이의 영향 373.2.2 딤플 분포의 영향 37제 4장 결론 70References 72Abstract 76
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