Wear Mechanisms in Contacts Involving Slippers in Axial Piston Pumps: A Multi-Technical Analysis

Schuhler, G.; Jourani, Abdeljalil; Bouvier, Salima; Perrochat, J.-M.

doi:10.1007/s11665-018-3610-5

Cited by 10 publications

(3 citation statements)

References 49 publications

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“…During the high-speed rotation of the pump shaft, the retainer hole ''A'' is first extruded and worn by the ''contact slipper.'' From equation (10), when the radial rotation angle a is 0.1°, the range of wear in the retainer hole ''A'' is approximately 56°-125°. Meanwhile, the bending moment effect continues to increase during rotation, further enhancing the degree of overturning of the retainer.…”

Section: Methodsmentioning

confidence: 99%

“…According to the severity, the failure mechanism of the retainer is characterized by wear and structural fracture. In response to retainer wear, Schuhler et al 10 observe surface wear on key friction pairs (piston pair, slipper pair, port pair, and spherical hinge pair) in the aviation pump, indicating foreign object damage (FOD) originating from impurity particles carried by the hydraulic flow into the friction pairs. Balli 11 emphasize the crucial importance of conducting meticulous inspections on the overall cleanliness of aviation pumps.…”

Section: Introductionmentioning

confidence: 99%

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Action mechanism of the overturning retainer and the slipper of axial piston machines

Wang,

Hu,

Zeng

et al. 2023

Proceedings of the Institution of Mechanical Engineers, Part C:

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The retainer in the faulty piston pump exhibits abnormal wear and fracture. To investigate the early failure mechanism of the fractured retainer, a model is presented for calculating the transient contact between the overturning retainer and the slipper. The trajectory equations between the overturning retainer and the slipper are established based on the transformation matrix and the operating mechanism of the slipper in the oil-sucking and oil-discharging areas. The push point trajectory between the overturning retainer and the slipper is determined, while also identifying the failure mechanism of the retainer extrusion wear. The results demonstrate that as the degree of overturning increases, there is an escalation in both the extent and range of extrusion and wear between the failure retainer and the slipper. This research elucidates the failure mechanism of the retainer, thereby establishing a fundamental basis for dynamic modeling and coupled vibration analysis of overturning retainers.

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Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Action mechanism of the overturning retainer and the slipper of axial piston machines

Wang,

Hu,

Zeng

et al. 2023

Proceedings of the Institution of Mechanical Engineers, Part C:

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show abstract

“…To respond to the effect of the contact pressure in the problem of elastic deformation should be taken into account. Several research works in fretting contact [6][7][8][9][10] have been done in order to reduce fatigue strength, frictions, and wear. However, some other parts and contact interfaces, like the interface between slipper and retainer, which are not well lubricated, are also significant wear and efficiency loss.…”

Section: Introductionmentioning

confidence: 99%

Fracture and Damage Mechanisms of Slipper-Retainer Assembly in Axial Piston Machines

Haidak

Wang

2021

Lecture Notes in Civil Engineering

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Axial Piston Machine is a key component in many hydraulic, agriculture, construction, aeronautic, mobile robots, and many other fields. Its reputation stems from its compactness, relative ease in controlling the effective fluid displacement per shaft revolution, and high-pressure operation. However, it is facing problems of rupture, fracture, and damage of its elements, among which are slipper and retainer. These problems cause fatigue of the entire machine and consequently loss of energy and performance. Thus, to better understand the origin and causes and predict the exaggerated deformation and the increasing deterioration of Axial Piston Machine's components, we first investigated the theoretical modeling, including mathematical and simulation modeling of the slipper-retainer interface. The related external forces and applied loads considering the normal working condition of the machine are analyzed. Also, to better assess the effect of materials, materials with specific characteristics are used for simulating the hydrostatic pressure, stain, and elastic deformation of slipper-retainer assembly. At the end of each simulation, weariness is checked for each material. The most exposed areas of slipper and retainer to the fracture and intensive fatigue are determined. Finally, to validate our simulation results, a new pump is tested for a particular time to observe wear on the surfaces; suggestions are giving for improving the durability of axial piston machines.

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Experimental Study on Frictional Pairs of Piston Pumps

Liu

et al. 2022

J Fail. Anal. and Preven.

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Wear Mechanisms in Contacts Involving Slippers in Axial Piston Pumps: A Multi-Technical Analysis

Cited by 10 publications

References 49 publications

Action mechanism of the overturning retainer and the slipper of axial piston machines

Action mechanism of the overturning retainer and the slipper of axial piston machines

Fracture and Damage Mechanisms of Slipper-Retainer Assembly in Axial Piston Machines

Experimental Study on Frictional Pairs of Piston Pumps

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