Deformation characteristics of adaptive hydrostatic thrust bearing under extreme working conditions
- PDF / 2,643,302 Bytes
- 11 Pages / 595.276 x 790.866 pts Page_size
- 73 Downloads / 204 Views
(2020) 42:489
TECHNICAL PAPER
Deformation characteristics of adaptive hydrostatic thrust bearing under extreme working conditions Xiaodong Yu1 · Fakun Wang1 · Defan Zhou1 · Dianbin Huang1 · Shiwei Zhan1 · Mubing Yu2 · Jianhua Jiao3 · Junfeng Wang3 Received: 31 January 2020 / Accepted: 6 August 2020 © The Brazilian Society of Mechanical Sciences and Engineering 2020
Abstract Investigation of the deformation characteristics of adaptive hydrostatic thrust bearings has been performed under extreme conditions, considering the relationship between viscosity and temperature of lubricating oil. A 3D model is generated, including the oil pad, the oil film and friction pairs. The oil film temperature field and the oil cavity pressure field have been calculated based on CFD. According to the lubrication theory and tribology principle, the force deformation, the thermal deformation, the force and thermal coupling deformation have been studied by using workbench simulation software, and the best working condition of adaptive hydrostatic thrust bearing is obtained. The results show that the load causes the table and the base to undergo inward elastic deformation, and the temperature causes them to undergo outward thermal deformation. The two deformations have opposite directions, and the deformations compensate each other. When the load is between 28 and 32t, the possibility of dry friction generated by the friction pair is low. The research results provide a theoretical basis for the stability of adaptive hydrostatic thrust bearings under extreme working conditions. Keywords Extreme working conditions · Adaptive hydrostatic thrust bearing · Oil film temperature field and pressure field performance · Deformation characteristics of friction pairs
1 Introduction With the hydraulic oil supplied through the hydraulic system, the lubricating oil flows into the hydrostatic bearing oil cavity through the pressure compensation element. Due to the damping effect of the sealing oil edge, a pressure oil film is formed, and then, the main shaft as well as the load is floated to make a hydrostatic bearing in a liquid friction state. There are some outstanding properties in terms of hydrostatic bearings, such as high support rigidity, good Technical Editor: Daniel Onofre de Almeida Cruz, D.Sc.. * Xiaodong Yu [email protected] 1
Key Laboratory of Advanced Manufacturing and Intelligent Technology, Ministry of Education, Harbin University of Science and Technology, Harbin 150080, China
2
School of Materials Science and Engineering, China University of Petroleum, Qingdao 266580, China
3
Qiqihar Heavy CNC Equipment Corp. LTD., Qiqihar 161005, China
vibration resistance and long service life. As a result, a hydrostatic bearing affecting the manufacturing quality and operating efficiency of equipment has become a key component in the fields of aerospace together with machining. With requirements for comprehensive performance of hydrostatic bearings getting increasingly serious, scholars at home and abroad have paid more
Data Loading...
