Volume 31 Issue 8
Aug.  2016
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TANG He-sheng, YIN Yao-bao, LI Jing. Thermal-structural coupling characteristics of axial piston pump slipper pair[J]. Journal of Aerospace Power, 2016, 31(8): 1913-1920. doi: 10.13224/j.cnki.jasp.2016.08.016
Citation: TANG He-sheng, YIN Yao-bao, LI Jing. Thermal-structural coupling characteristics of axial piston pump slipper pair[J]. Journal of Aerospace Power, 2016, 31(8): 1913-1920. doi: 10.13224/j.cnki.jasp.2016.08.016

Thermal-structural coupling characteristics of axial piston pump slipper pair

doi: 10.13224/j.cnki.jasp.2016.08.016
  • Received Date: 2014-11-10
  • Publish Date: 2016-08-28
  • To improve the wear resistance of axial piston pump slipper pair, the transient thermal-structure coupling model was established based on the slipper/swash plate friction pair. Under the pressure shock condition, the slipper surface temperature, stress and deformation were analyzed. The results show that slipper temperature in a piston pump periodically changes with the piston chamber pressure and the range of slipper temperature from 45.5℃ to 49.8℃. The highest slipper temperature appears in the pump suction-discharge pressure transition zone. When the slipper runs in discharge pressure zone of pump, the maximum axial stress is 250MPa, which is concentrated on the edge region between slipper pocket and sealing belt. The layed axial stress of slipper is significant, causing the slipper deformation differentiation. The range of slipper deformation is from 12.5μm to 15μm, which appears at the edge of slipper. Shear force of abrasive particle is enhanced by input heat flux of slipper intensifying micro cutting and extrusion deformation. Furthermore, strip exfoliation and pits are presented by wear surface of slipper, which shows adhesive and abrasive wear characteristics.

     

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