Tolerance design guideline for piston/cylinder interface of electro-hydrostatic actuator (EHA) pumps based on a Thermal-Fluid-Structure model

Zhang, Junhui; Shen, Yining; Lyu, Fei; Huang, Weidi; Xu, Bing

doi:10.1016/j.triboint.2023.109208

Tribology International

2024

DOI: 10.1016/j.triboint.2023.109208

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Tolerance design guideline for piston/cylinder interface of electro-hydrostatic actuator (EHA) pumps based on a Thermal-Fluid-Structure model

Junhui Zhang,

Yining Shen,

Fei Lyu

et al.

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Cited by 3 publications

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Cumulative thermal coupling modeling and analysis of oil-immersed motor-pump assembly for electro–hydrostatic actuator

FAN,

WANG,

WANG

et al. 2024

Chinese Journal of Aeronautics

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Cumulative thermal coupling modeling and analysis of oil-immersed motor-pump assembly for electro–hydrostatic actuator

FAN,

WANG,

WANG

et al. 2024

Chinese Journal of Aeronautics

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Application and progress of high-efficiency electro-hydrostatic actuator technology with energy recovery: A comprehensive review

Du,

Zhou,

Hong

et al. 2024

Energy Conversion and Management

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Theoretical investigation and experimental validation of wear in conjugate rolling friction pairs of two-dimensional piston pumps

Lu,

Zhou,

Wang

et al. 2024

Advances in Mechanical Engineering

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The two-dimensional piston pump stands as an optimal power component within pump-controlled hydraulic systems due to its utilization of a rolling friction pair. However, the sustained efficiency of the two-dimensional piston pump over prolonged operational periods remains unverified, primarily owing to the insufficient exploration of the wear mechanism inherent to its unique conjugate rolling friction pair. This study combines theoretical investigation and experimental verification to determine that the primary wear trajectory of the conjugate rolling friction pair is concentrated in the region where the roller moves from the low point to the high point of the cam. The wear is most severe at the mid-point of the cam, with a depth of up to 14 μm, which is consistent with the theoretical analysis. Furthermore, experimental observations unveil inconsistencies in the two-point support of the conjugate rolling friction pair, alongside an observed impact of preload force on the wear phenomenon. These findings furnish crucial theoretical underpinnings for the prospective optimization of design strategies in future endeavors.

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Tolerance design guideline for piston/cylinder interface of electro-hydrostatic actuator (EHA) pumps based on a Thermal-Fluid-Structure model

Cited by 3 publications

References 34 publications

Cumulative thermal coupling modeling and analysis of oil-immersed motor-pump assembly for electro–hydrostatic actuator

Cumulative thermal coupling modeling and analysis of oil-immersed motor-pump assembly for electro–hydrostatic actuator

Application and progress of high-efficiency electro-hydrostatic actuator technology with energy recovery: A comprehensive review

Theoretical investigation and experimental validation of wear in conjugate rolling friction pairs of two-dimensional piston pumps

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