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사각형 딤플로 Surface Texturing한 경사진 Slider 베어링의 윤활해석

Lubrication Analysis of Surface-Textured Inclined Slider Bearing with Rectangular Dimples

박태조|장인규
한국트라이볼로지학회 (Korean Tribology Society)|2022.10|한국트라이볼로지학회지 (Tribology and Lubricants)|제38권 제5호|pp. 191-198

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참고문헌

키워드

Numerical analysis수치해석전산유체역학Computational fluid dynamics(CFD)슬라이더 베어링Slider bearingSurface texturing표면조직가공유체윤활Hydrodynamic lubrication
주제분류기계공학

초록

With the world's fast expanding energy usage comes a slew of new issues. Because one-third of energy is lost in overcoming friction, tremendous effort is being directed into minimizing friction. Surface texturing is the latest surface treatment technology that uses grooves and dimples on the friction surface of the machine to significantly reduce friction and improve wear resistance. Despite the fact that many studies on this issue have been conducted, most of them focused on parallel surfaces, with relatively few cases of converging films, as in most sliding bearings. This study investigated the lubrication performance of surface-textured inclined slider bearings. We analyzed the continuity and Navier–Stokes equations using a commercial computational fluid dynamics code, FLUENT. The results show the pressure and velocity distributions and the lubrication performance according to the number and orientation of rectangular dimples. Partial texturing somewhat improves the lubrication performance of inclined slider bearings. The number of dimples with the maximum load-carrying capacity (LCC) and minimum friction is determined. When the major axis of the dimple is arranged in the sliding direction, the LCC and friction reduction are maximized. However, full texturing significantly reduces the LCC of the slider bearing and increases the flow rate. The results have the potential to improve the lubrication performance of various sliding bearings, but further research is required.

Abstract

With the world's fast expanding energy usage comes a slew of new issues. Because one-third of energy is lost in overcoming friction, tremendous effort is being directed into minimizing friction. Surface texturing is the latest surface treatment technology that uses grooves and dimples on the friction surface of the machine to significantly reduce friction and improve wear resistance. Despite the fact that many studies on this issue have been conducted, most of them focused on parallel surfaces, with relatively few cases of converging films, as in most sliding bearings. This study investigated the lubrication performance of surface-textured inclined slider bearings. We analyzed the continuity and Navier–Stokes equations using a commercial computational fluid dynamics code, FLUENT. The results show the pressure and velocity distributions and the lubrication performance according to the number and orientation of rectangular dimples. Partial texturing somewhat improves the lubrication performance of inclined slider bearings. The number of dimples with the maximum load-carrying capacity (LCC) and minimum friction is determined. When the major axis of the dimple is arranged in the sliding direction, the LCC and friction reduction are maximized. However, full texturing significantly reduces the LCC of the slider bearing and increases the flow rate. The results have the potential to improve the lubrication performance of various sliding bearings, but further research is required.

참고문헌 (25)

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관련 논문AI추천

Surface Texturing한 평행 슬라이더 베어링의 열유체윤활 해석: 딤플 깊이의 영향김민규, 박태조한국트라이볼로지학회 · 한국트라이볼로지학회지2017 · 제33권 제6호타원체 딤플로 Texturing한 평행 스러스트 베어링의 윤활특성김민규, 박태조한국트라이볼로지학회 · 한국트라이볼로지학회지2016 · 제32권 제5호미세 그루브가 있는 무한폭 Slider 베어링의 윤활해석:제3보 - 그루브 형상의 영향박태조, 장인규한국트라이볼로지학회 · 한국트라이볼로지학회지2020 · 제36권 제4호미세 그루브가 있는 무한폭 Slider 베어링의 윤활해석:제1보 - 그루브 위치의 영향박태조, 장인규한국트라이볼로지학회 · 한국트라이볼로지학회지2019 · 제35권 제6호사각형 그루브로 Surface Texturing한 평행 스러스트 베어링의 열유체윤활 해석: 제1보 - 유막온도경계조건의 영향강정국, 박태조한국트라이볼로지학회 · 한국트라이볼로지학회지2022 · 제38권 제6호Surface Texturing한 평행 스러스트 베어링의 열유체윤활 해석: 딤플 반경과 깊이의 영향박태조, 정요한한국트라이볼로지학회 · 한국트라이볼로지학회지2014 · 제30권 제5호

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