Journal Home > Volume 8 , Issue 5
Friction 2020, 8(5): 957-969 https://doi.org/10.1007/s40544-019-0314-2
Research Article | Open Access | Issue | Published: 26 September 2019

Study on friction performance and mechanism of slipper pair under different paired materials in high-pressure axial piston pump

Show Author's Information Huaichao WU1( ),  Limei ZHAO1,  Siliang NI1,  Yongyong HE2
School of Mechanical Engineering, Guizhou University, Guiyang 550025, China
State Key Laboratory of Tribology, Tsinghua University, Beijing 100084, China
Keywords:
temperature, axial piston pump, slipper pair, material matching, dry friction
Cite this article:
WU H, ZHAO L, NI S, et al. Study on friction performance and mechanism of slipper pair under different paired materials in high-pressure axial piston pump. Friction, 2020, 8(5): 957-969. https://doi.org/10.1007/s40544-019-0314-2
Download citation
EndNote(RIS)
BibTeX

519

Views

41

Downloads

Citations

19

Crossref

N/A

WoS

20

Scopus

2

CSCD

Abstract Full text About this article

High-pressure axial piston pumps operate in high-speed and high-pressure environments. The contact state of the slipper against the swashplate can easily change from an oil film lubrication to a mixed oil film/asperity contact, or even dry friction. To improve the dry friction performance of slipper pairs and to avoid their potentially rapid failure, this study examined the effects of material matching on the dry friction performance of the slipper pair for high-pressure axial piston pumps. A FAIAX6 friction and wear tester was developed, and the dry friction coefficients of the slipper pairs matched with different materials were studied using this tester. Based on the thermo-mechanical coupling of the slipper pair with the working process, the contact surface temperatures of the slipper pairs matched with different materials were calculated and analyzed for the same working conditions. Following this, the effects of the material properties on the temperature increase at the slipper sliding contact surfaces were revealed. The reliabilities of the temperature calculations and analysis results were verified through orthogonal tests of slipper pairs matched with different materials. The results indicate that the influence of the material density on the friction coefficient is greater than that of the Poisson’s ratio or the elastic modulus, and that the slipper material chosen should have a high thermal conductivity, low density, and low specific heat, whereas the swashplate material should be high in specific heat, density, and thermal conductivity; in addition, the slipper pair should be a type of hard material to match the type of soft material applied; that is, the hardness of the swashplate material should be greater than that of the slipper material.


menu
Abstract
Full text
Outline
About this article

Study on friction performance and mechanism of slipper pair under different paired materials in high-pressure axial piston pump

Show Author's information Huaichao WU1( ), Limei ZHAO1, Siliang NI1, Yongyong HE2
School of Mechanical Engineering, Guizhou University, Guiyang 550025, China
State Key Laboratory of Tribology, Tsinghua University, Beijing 100084, China

Abstract

High-pressure axial piston pumps operate in high-speed and high-pressure environments. The contact state of the slipper against the swashplate can easily change from an oil film lubrication to a mixed oil film/asperity contact, or even dry friction. To improve the dry friction performance of slipper pairs and to avoid their potentially rapid failure, this study examined the effects of material matching on the dry friction performance of the slipper pair for high-pressure axial piston pumps. A FAIAX6 friction and wear tester was developed, and the dry friction coefficients of the slipper pairs matched with different materials were studied using this tester. Based on the thermo-mechanical coupling of the slipper pair with the working process, the contact surface temperatures of the slipper pairs matched with different materials were calculated and analyzed for the same working conditions. Following this, the effects of the material properties on the temperature increase at the slipper sliding contact surfaces were revealed. The reliabilities of the temperature calculations and analysis results were verified through orthogonal tests of slipper pairs matched with different materials. The results indicate that the influence of the material density on the friction coefficient is greater than that of the Poisson’s ratio or the elastic modulus, and that the slipper material chosen should have a high thermal conductivity, low density, and low specific heat, whereas the swashplate material should be high in specific heat, density, and thermal conductivity; in addition, the slipper pair should be a type of hard material to match the type of soft material applied; that is, the hardness of the swashplate material should be greater than that of the slipper material.

Keywords: temperature, axial piston pump, slipper pair, material matching, dry friction

References(16)

[1]
N D Manring, C L Wray, Z L Dong. Experimental studies on the performance of slipper bearings within axial-piston pumps. J Tribol 126(3): 511-518 (2004)
Google Scholar
[2]
M Borghi, E Specchia, B Zardin. Numerical analysis of the dynamic behaviour of axial piston pumps and motors slipper bearings. Int J Passeng Cars-Mech Syst 2(1): 1285-1302 (2009)
Google Scholar
[3]
M Pelosi, M Ivantysynova. A geometric multigrid solver for the piston-cylinder interface of axial piston machines. Tribol Trans 55(2): 163-174 (2012)
Google Scholar
[4]
F Canbulut, C Sinanoğlu, E Koç. Experimental analysis of frictional power loss of hydrostatic slipper bearings. Ind Lubr Tribol 61(3): 123-131 (2009)
Google Scholar
[5]
B Xu, J H Zhang, H Y Yang. Investigation on structural optimization of anti-overturning slipper of axial piston pump. Sci China Technol Sci 55(11): 3010-3018 (2012)
Google Scholar
[6]
A Ramesh, W Akram, S P Mishra, A H Cannon, A A Polycarpou, W P King. Friction characteristics of microtextured surfaces under mixed and hydrodynamic lubrication. Tribol Int 57: 170-176 (2013)
Google Scholar
[7]
F Canbulut, E Koç, C Sinanoğlu. Design of artificial neural networks for slipper analysis of axial piston pumps. Ind Lubr Tribol 61(2): 67-77 (2009)
Google Scholar
[8]
A Schenk, M Ivantysynova. A transient thermoelastohydrodynamic lubrication model for the slipper/swashplate in axial piston machines. J Tribol 137(3): 031701 (2015)
Google Scholar
[9]
U Wieczorek, M Ivantysynova. Computer aided optimization of bearing and sealing gaps in hydrostatic machines-the simulation tool CASPAR. Int J Fluid Power 3(1): 7-20 (2002)
Google Scholar
[10]
T Kazama. Thermohydrodynamic lubrication model applicable to a slipper of swashplate type axial piston pumps and motors (effects of operating conditions). Tribol Online 5(5): 250-254 (2010)
Google Scholar
[11]
S Hashemi, H Friedrich, L Bobach, D Bartel. Validation of a thermal elastohydrodynamic multibody dynamics model of the slipper pad by friction force measurement in the axial piston pump. Tribol Int 115: 319-337 (2017)
Google Scholar
[12]
G Rizzo, G P Massarotti, A Bonanno, R Paoluzzi, M Raimondo, M Blosi, F Veronesi, A Caldarelli, G Guarini. Axial piston pumps slippers with nanocoated surfaces to reduce friction. Int J Fluid Power 16(1): 1-10 (2015)
Google Scholar
[13]
O I Abdullah, J Schlattmann. Temperature analysis of a pin-on-disc tribology test using experimental and numerical approaches. Friction 4(2): 135-143 (2016)
Google Scholar
[14]
M Pelosi, M Ivantysynova. Heat transfer and thermal elastic deformation analysis on the piston/cylinder interface of axial piston machines. J Tribol 134(4): 041101 (2012)
Google Scholar
[15]
I Goryacheva, Y Makhovskaya. Combined effect of surface microgeometry and adhesion in normal and sliding contacts of elastic bodies. Friction 5(3): 339-350 (2017)
Google Scholar
[16]
O I Abdullah, J Schlattmann. Thermal behavior of friction clutch disc based on uniform pressure and uniform wear assumptions. Friction 4(3): 228-237 (2016)
Google Scholar
Publication history
Copyright
Acknowledgements
Rights and permissions

Publication history

Received: 05 December 2018
Revised: 07 April 2019
Accepted: 04 July 2019
Published: 26 September 2019
Issue date: October 2020

Copyright

© The author(s) 2019

Acknowledgements

This project was supported by the National Key Basic Research Program of China (973 Program, 2014CB046404), training plan for high-level innovative talent in Guizhou province (Grant No. Q.K.H.P.T.R.C [2016] 5659), preferred project of scientific and technological activities for personnel studying abroad in Guizhou province (Grant No. Q.R.X.M.Z.Z.H.T [2018] 0001), science and technology planning project in Guizhou Province (Grant No. Q.K.H.P.T.R.C [2017] 5788), and key research project on Innovation group of Guizhou Provincial Education Department (Grant No. Q.J.H. KY Z. [2018] 011).

Rights and permissions

Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made.

The images or other third party material in this article are included in the article’s Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder.

To view a copy of this licence, visit http://creativecommons.org/licenses/by/4.0/.

Return