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Experimental and numerical studies on erosion damage in damping holes on the valve plate of an axial piston pump

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Abstract

Erosion damage affects the reliability and durability of axial piston pumps. An axial piston pump was tested using endurance life testing method. The phenomenon of erosion damage on the valve plate was observed using a confocal laser scanning microscope, by comparing the surface on the valve plate before and after the endurance life testing. A CFD turbulence model inclusive of the cavitation effects was developed to predict the flow physics. The flow physics in the axial piston pump were presented and analyzed, including the fluid velocities, velocity fields, the total volume fraction fields of gas and vapor, and pressure fields. Two causes of erosion damage were found, the appearances of large amount of vapor, and directly hitting by the jetting flow. The first one is the cause of erosion damage on the surface near the transition region from the inlet port to the outlet port, and the second one is the cause of erosion damage on the surface near the transition region from the outlet port to the inlet port. Besides, the findings show that the fluid velocities closely relate to the area of erosion damage. The study provides insights into the occurrence of erosion damage in axial piston pumps.

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Authors and Affiliations

  1. Ocean College, Zhejiang University, Zhoushan, 316021, China

    Shaogan Ye, Wei Song & Shiqiang Zhu

  2. State Key Laboratory of Fluid Power and Mechatronic Systems, Zhejiang University, Hangzhou, 310027, China

    Junhui Zhang & Bing Xu

  3. Liyuan (Suzhou) Hydraulic Co. Ltd, Suzhou, 215100, China

    Long Chen

  4. Leading Edge Hydraulic System Co. Ltd, Wuxi, 214028, China

    Haiyong Shi

Authors
  1. Shaogan Ye
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  2. Junhui Zhang
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  3. Bing Xu
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  4. Wei Song
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  5. Long Chen
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  6. Haiyong Shi
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  7. Shiqiang Zhu
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Corresponding author

Correspondence to Junhui Zhang.

Additional information

Recommended by Associate Editor Shin Hyung Rhee

Ye Shaogan was born in 1989. He is currently a post-doctoral in Zhejiang University. He received his B.S. degree in Northeastern University, Shenyang, China in 2011, and Ph.D. degree in Zhejiang University, Hangzhou, China in 2016. His research interest is noise control of axial piston machines.

Zhang Junhui was born in 1983. He is currently a Research Fellow in Zhejiang University. He received his B.S. and Ph.D. degrees in Zhejiang University, Hangzhou, China in 2007 and 2012, respectively. His research interests are fluid power systems and components.

Xu Bing was born in 1971. He is currently a Professor in Zhejiang University. He received his B.S., M.S. and Ph.D. degrees in Zhejiang University, Hangzhou, China in 1992, 1995 and 2001, respectively. His research interests are fluid power systems and components.

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Ye, S., Zhang, J., Xu, B. et al. Experimental and numerical studies on erosion damage in damping holes on the valve plate of an axial piston pump. J Mech Sci Technol 31, 4285–4295 (2017). https://doi.org/10.1007/s12206-017-0827-4

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  • DOI: https://doi.org/10.1007/s12206-017-0827-4

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