Effect of Fluid Compressibility on the Transient Response Characteristics of Open-Type Constant Flow Hydrostatic Bearings

doi:10.1007/s11249-017-0959-9

CORC > 兰州理工大学 > 兰州理工大学

	Effect of Fluid Compressibility on the Transient Response Characteristics of Open-Type Constant Flow Hydrostatic Bearings
	Du, Yikang 1; Mao, Kuanmin 1; Chen, Han 2; Gao, Longlong 1; Xie, Liming 3; Yin, Ling 4
刊名	TRIBOLOGY LETTERS
	2018-03
卷号	66 期号:1
关键词	Open-type constant flow hydrostatic bearing Fluid compressibility Transient response performance
ISSN号	1023-8883
DOI	10.1007/s11249-017-0959-9
英文摘要	The present work describes an experimental and theoretical study to demonstrate the effect of fluid compressibility caused by air in the oil film on the transient performance of an open-type constant flow hydrostatic bearing. An experimental study is conducted to investigate the transient response of the hydrostatic bearing under a step force excitation, and the results demonstrate that the damping coefficient of the bearing decreases with increasing coefficient of oil compressibility when the bearing ascends, but negligible effects of compressibility are observed when the bearing descends. To analyze the mechanism of the compressibility effects due to air in the lubrication, the flow field of oil with air is numerically obtained by solving the incompressible Navier-Stokes equations, with an analytical model describing the dependence of the fluid bulk modulus on the pressure and density. Qualitative agreement between the experimental and numerical results is obtained, which indicates that an increase in the air concentration in the oil, hence a reduction in the bulk modulus of the fluid, results in transient enlargement of the mass flow rate and increased oil film thickness. This finding explains the decrease in the damping coefficient when the bearing ascends.
资助项目	National Natural Science Foundation of China (NSFC)[51505084]
WOS研究方向	Engineering
语种	英语
出版者	SPRINGER/PLENUM PUBLISHERS
WOS记录号	WOS:000426475600021
状态	已发表
内容类型	期刊论文
源URL	[http://119.78.100.223/handle/2XXMBERH/32770]
专题	兰州理工大学
通讯作者	Mao, Kuanmin
作者单位	1.Huazhong Univ Sci & Technol, Sch Mech Sci & Engn, Wuhan 430074, Hubei, Peoples R China 2.Huazhong Univ Sci & Technol, Dept Mech, Wuhan 430074, Hubei, Peoples R China 3.Lanzhou Univ Technol, Sch Mech & Elect Engn, Lanzhou 730050, Gansu, Peoples R China 4.Dongguan Univ Technol, Sch Mech Engn, Dongguan, Peoples R China
推荐引用方式 GB/T 7714	Du, Yikang,Mao, Kuanmin,Chen, Han,et al. Effect of Fluid Compressibility on the Transient Response Characteristics of Open-Type Constant Flow Hydrostatic Bearings[J]. TRIBOLOGY LETTERS,2018,66(1).
APA	Du, Yikang,Mao, Kuanmin,Chen, Han,Gao, Longlong,Xie, Liming,&Yin, Ling.(2018).Effect of Fluid Compressibility on the Transient Response Characteristics of Open-Type Constant Flow Hydrostatic Bearings.TRIBOLOGY LETTERS,66(1).
MLA	Du, Yikang,et al."Effect of Fluid Compressibility on the Transient Response Characteristics of Open-Type Constant Flow Hydrostatic Bearings".TRIBOLOGY LETTERS 66.1(2018).