Parametric analysis of thermal effect on hydrostatic slipper bearing capacity of axial piston pump
Parametric analysis of thermal effect on hydrostatic slipper bearing capacity of axial piston pump
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DOI：
10.1007/s11771-016-3078-0
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发表时间：
2016-02
影响因子：
4.4
通讯作者：
Hesheng Tang;Yaochen Yin;Yang Zhang;Jing Li
中科院分区：
文献类型：
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作者：
Hesheng Tang;Yaochen Yin;Yang Zhang;Jing Li
在摩擦轴承设计中，常采用静压滑块，以改善摩擦轴承的动态特性。研究了热效应对轴向柱塞泵静液压滑靴承载能力的影响。根据滑靴/斜盘副的能量守恒定律，建立了一组集总参数数学模型。结果表明，由于固体热变形引起的热平衡间隙随轴转角呈周期性变化。滑块的承载能力随着热平衡间隙的减小而显著增加。为了提高滑块的承载能力，固定阻尼器的长径比在3.5 ~ 8.75之间变化，滑块的半径比在1.5 ~ 2.0之间变化。此外，较高的滑靴热导率有助于提高滑靴承载能力，但不会损害热平衡间隙。
Hydrostatic slipper was often used in friction bearing design, allowing improvement of the latter’s dynamic behavior. The influence of thermal effect on hydrostatic slipper bearing capacity of axial piston pump was investigated. A set of lumped parameter mathematical models were developed based on energy conservation law of slipper/swash plate pair. The results show that thermal equilibrium clearance due to solid thermal deformation periodically changes with shaft rotational angle. The slipper bearing capacity increases dramatically with decreasing thermal equilibrium clearance. In order to improve the slipper bearing capacity, length-to-diameter ratio of fixed damper varies from 3.5 to 8.75 and radius ratio of slipper varies from 1.5 to 2.0. In addition, the higher slipper thermal conductivity is useful to improve slipper bearing capability, but the thermal equilibrium clearance is not compromised.