Predicting the behaviour of slipper pads in swashplate-type axial piston pumps

R M Harris, K A Edge, D G Tilley

Research output: Contribution to conferencePaper

Abstract

This paper describes a dynamic model for slipper-pads which allows lift and tilt behaviour to be predicted, including the effects of possible contact with the swashplate or slipper retaining plate. This model has been incorporated in the Bathfp simulation package and used to examine the dynamic stability of slipper-pads over the pumping cycle, and to compare the behaviour over a range of pump speeds. The centripetal tilting moments acting on the slipper-pad increase with speed and as a consequence can lead to contact between the slipper and the swashplate at high speed. This is particularly likely to occur as the piston makes the transition between suction and delivery, where the pressure forces acting on the piston-slipper assembly change abruptly. The predicted nature of the swashplate contacts at high speeds correspond closely with witness marks on a dismantled pump. The model presented may also be used for predicting slipper behaviour in other types of pump, for example wobble-plate type pumps, or in piston motors
LanguageEnglish
Pages1-9
Number of pages9
StatusPublished - 1993
EventASME WAM - New Orleans, LA, USA United States
Duration: 1 Jan 1993 → …

Conference

ConferenceASME WAM
CountryUSA United States
CityNew Orleans, LA
Period1/01/93 → …

Fingerprint

Reciprocating pumps
Pumps
Pistons
Dynamic models

Cite this

Harris, R. M., Edge, K. A., & Tilley, D. G. (1993). Predicting the behaviour of slipper pads in swashplate-type axial piston pumps. 1-9. Paper presented at ASME WAM, New Orleans, LA, USA United States.

Predicting the behaviour of slipper pads in swashplate-type axial piston pumps. / Harris, R M; Edge, K A; Tilley, D G.

1993. 1-9 Paper presented at ASME WAM, New Orleans, LA, USA United States.

Research output: Contribution to conferencePaper

Harris, RM, Edge, KA & Tilley, DG 1993, 'Predicting the behaviour of slipper pads in swashplate-type axial piston pumps' Paper presented at ASME WAM, New Orleans, LA, USA United States, 1/01/93, pp. 1-9.
Harris RM, Edge KA, Tilley DG. Predicting the behaviour of slipper pads in swashplate-type axial piston pumps. 1993. Paper presented at ASME WAM, New Orleans, LA, USA United States.
Harris, R M ; Edge, K A ; Tilley, D G. / Predicting the behaviour of slipper pads in swashplate-type axial piston pumps. Paper presented at ASME WAM, New Orleans, LA, USA United States.9 p.
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abstract = "This paper describes a dynamic model for slipper-pads which allows lift and tilt behaviour to be predicted, including the effects of possible contact with the swashplate or slipper retaining plate. This model has been incorporated in the Bathfp simulation package and used to examine the dynamic stability of slipper-pads over the pumping cycle, and to compare the behaviour over a range of pump speeds. The centripetal tilting moments acting on the slipper-pad increase with speed and as a consequence can lead to contact between the slipper and the swashplate at high speed. This is particularly likely to occur as the piston makes the transition between suction and delivery, where the pressure forces acting on the piston-slipper assembly change abruptly. The predicted nature of the swashplate contacts at high speeds correspond closely with witness marks on a dismantled pump. The model presented may also be used for predicting slipper behaviour in other types of pump, for example wobble-plate type pumps, or in piston motors",
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AB - This paper describes a dynamic model for slipper-pads which allows lift and tilt behaviour to be predicted, including the effects of possible contact with the swashplate or slipper retaining plate. This model has been incorporated in the Bathfp simulation package and used to examine the dynamic stability of slipper-pads over the pumping cycle, and to compare the behaviour over a range of pump speeds. The centripetal tilting moments acting on the slipper-pad increase with speed and as a consequence can lead to contact between the slipper and the swashplate at high speed. This is particularly likely to occur as the piston makes the transition between suction and delivery, where the pressure forces acting on the piston-slipper assembly change abruptly. The predicted nature of the swashplate contacts at high speeds correspond closely with witness marks on a dismantled pump. The model presented may also be used for predicting slipper behaviour in other types of pump, for example wobble-plate type pumps, or in piston motors

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