TY - JOUR
T1 - Investigations on transitions of lubrication states for water lubricated bearing. Part I
T2 - Determination of friction coefficients and film thickness ratios
AU - Xie, Zhongliang
AU - Rao, Zhu Shi
AU - Ta, Na
AU - Liu, Ling
N1 - Publisher Copyright:
© Emerald Group Publishing Limited.
PY - 2016
Y1 - 2016
N2 - Purpose: This paper aims to provide efficient methods to calculate the friction coefficients and film thickness ratios in mixed lubrication (ML) regime for water lubricated bearings. Mathematical models consider influence of micro-asperities contacts which is based on the Gauss random distribution. Design/methodology/approach: Effects of external loads, rotating speeds and radial clearances are obtained. Algorithm shown here is applied to a class of common industrial problems. Calculated Stribeck values are given and evaluated. The calculated and experimental results agree well which proves the correctness of the model. Findings: In Part I, the authors believe that the paper presents the following for the first time: universal methods are developed for the calculation of friction coefficients and film thickness ratios (lambda) in ML regime; effects of different external loads, rotating speeds and radial clearances on friction coefficients and film thickness ratios are presented in detail; comparisons are made between the results predicted by the model and experimental results, and they agree rather well which proves the correctness of the model. Originality/value: Present work successfully develops universal methods for predicting the friction coefficients and film thickness ratios.
AB - Purpose: This paper aims to provide efficient methods to calculate the friction coefficients and film thickness ratios in mixed lubrication (ML) regime for water lubricated bearings. Mathematical models consider influence of micro-asperities contacts which is based on the Gauss random distribution. Design/methodology/approach: Effects of external loads, rotating speeds and radial clearances are obtained. Algorithm shown here is applied to a class of common industrial problems. Calculated Stribeck values are given and evaluated. The calculated and experimental results agree well which proves the correctness of the model. Findings: In Part I, the authors believe that the paper presents the following for the first time: universal methods are developed for the calculation of friction coefficients and film thickness ratios (lambda) in ML regime; effects of different external loads, rotating speeds and radial clearances on friction coefficients and film thickness ratios are presented in detail; comparisons are made between the results predicted by the model and experimental results, and they agree rather well which proves the correctness of the model. Originality/value: Present work successfully develops universal methods for predicting the friction coefficients and film thickness ratios.
KW - Film thickness ratio
KW - Friction coefficient
KW - Gauss random distribution
KW - Mixed lubrication regime
KW - Water lubricated bearing
UR - http://www.scopus.com/inward/record.url?scp=84969981457&partnerID=8YFLogxK
U2 - 10.1108/ILT-10-2015-0146
DO - 10.1108/ILT-10-2015-0146
M3 - 文章
AN - SCOPUS:84969981457
SN - 0036-8792
VL - 68
SP - 404
EP - 415
JO - Industrial Lubrication and Tribology
JF - Industrial Lubrication and Tribology
IS - 3
ER -