A Study on the Deformation Characteristics of a Slipper Bearing for High Pressure Piston Pump

J. Ocean Eng. Technol. 2009;23(5):39-44.

Koh Sung-Wi,Kim Byung-Tak

School of Mechanical Engineering Pukyong National University,School of Mechanical Engineering Pukyong National University

고압 피스톤 펌프용 슬리퍼 베어링의 변형 특성에 관한 연구

고성위,김병탁

부경대학교 기계공학부,부경대학교 기계공학부

Keywords: Hydrostatic slipper bearing, Finite element method, Injection pressure, Fluid-structure interaction(FSI), Lifting force

핵심용어: 정압 슬리퍼 베어링, 유한요소법, 분사압력, 유체-고체 상호작용, 지지력

Abstract

The hydrostatic slipper bearing is generally used in high pressure axial piston pumps to support the load generated from two surfaces which are sliding relatively at low speed. The object of the bearing is to remove the possibility of direct contact by maintenance of an adequate oil film thickness between two metal surfaces. Because the bearing performance is influenced by the bearing deformation, it is highly dependent on the injection pressure, the bearing surface profile and so on. In this study, the deformation characteristics of a hydrostatic slipper bearing is investigated according to the injection pressure by the finite element analysis. In the analysis, the special boundary condition to take the fluid-structure interaction (FSI) into account is used on the interactive surface. The results, such as bearing deformation, stress and lifting force, obtained from the fully coupled analysis are compared with those from the single step sequential method.