车辆行星轮轴向滑动支承沟槽型织构润滑特性分析

发布时间：2018-03-19 01:36

  本文选题：轴向滑动支承　切入点：沟槽型织构　出处：《润滑与密封》2017年09期 　论文类型：期刊论文

【摘要】：在车辆旋转轴向滑动支承表面加工不同槽型微米级的沟槽,包括椭圆形槽、圆弧槽、三角形槽、梯形槽和矩形槽,利用流体流经浅槽表面产生流体动压力来减小摩擦。在考虑空化和流体惯性影响下,通过数值求解基于质量守恒边界条件的不可压缩定常Reynolds方程,分析不同槽型的结构参数(槽数、槽宽比、径向宽度)和工况参数(转速、槽深比)对润滑性能的影响。结果表明:研究的5种槽型的承载力由大到小依次为三角形、圆弧形、梯形、椭圆形和矩形;增加槽宽比、槽深比、径向宽度有利于降低润滑油温升,而增加槽深比则有利于降低空化率;研究的5种槽型中,矩形槽的润滑油温升最低且润滑流量最大,梯形槽的空化率较小。
[Abstract]:Machining different grooves of micron size on the surfaces of rotating axial sliding supports of vehicles, including elliptical grooves, circular grooves, triangular grooves, trapezoidal grooves and rectangular grooves, In order to reduce friction, fluid flow through the surface of shallow groove is used to reduce friction. Under the influence of cavitation and fluid inertia, the incompressible steady Reynolds equation based on mass conservation boundary condition is solved numerically. The effects of structural parameters (number of slots, ratio of groove width, radial width) and operating conditions (rotation speed, groove depth ratio) on lubricating performance are analyzed. The results show that the bearing capacity of the five grooves studied is triangle, arc shape, and so on. Trapezoid, ellipse and rectangle; increasing the ratio of groove width, groove depth, radial width is beneficial to reduce the temperature rise of lubricating oil, while increasing the ratio of groove depth is helpful to reduce the cavitation rate. The temperature rise of lubricating oil in rectangular grooves is the lowest and the lubricating flow is the largest, and the cavitation rate of trapezoidal grooves is small.
【作者单位】： 河北工程大学机械与装备工程学院;
【基金】：河北省自然科学基金项目(E2014402047)
【分类号】：TH117.2
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本文编号：1632272