欢迎访问润滑与密封官方网站!

咨询热线:020-32385313 32385312 RSS EMAIL-ALERT
轴颈表面粗糙度对橡胶材料干摩擦特性的影响
作者:
作者单位:

作者简介:

通讯作者:

中图分类号:

基金项目:

国家自然科学基金项目(11372245);陕西省自然科学基金重点项目(2018JZ1001);西安科技大学培育基金项目(201632).


ffect of Journal Surface Roughness on Dry Friction Characteristics of Rubber
Author:
Affiliation:

Fund Project:

  • 摘要
  • |
  • 图/表
  • |
  • 访问统计
  • |
  • 参考文献
  • |
  • 相似文献
  • |
  • 引证文献
  • |
  • 资源附件
  • |
  • 文章评论
    摘要:

    当船舶艉轴承供水系统出现故障或轴承过载时,金属轴颈与橡胶轴承之间会发生局部接触而处于干摩擦状态下。为研究金属轴颈表面粗糙度对水润滑橡胶轴承干摩擦特性的影响,采用TIME3230表面粗糙度测量仪对金属轴颈表面微凸体进行测量,得到金属轴颈表面微凸体的位置参数分布曲线,并对其进行去噪处理;利用傅立叶变换重新构造去噪后的金属轴颈表面粗糙度分布,并依据理论计算金属轴颈-橡胶轴承摩擦副的摩擦因数。金属轴颈-橡胶轴承摩擦副的摩擦因数计算结果与实际情况吻合,说明建立的轴颈表面粗糙度分布模型合理。分析结果表明:在干摩擦状态下,金属轴颈-橡胶轴承摩擦副的摩擦因数随着表面粗糙度函数波幅的增大呈线性增大趋势,随着粗糙度分布函数的特征波长系数的增大呈非线性增大;润滑流动方向顺着加工纹理方向时,摩擦因数比垂直加工纹理方向和与加工纹理呈45°时的摩擦因数都小。因此,选择合理的轴承表面粗糙度的幅值和波长可以提高金属轴颈-橡胶轴承摩擦副的摩擦润滑性能;沿加工纹理加工、装配金属轴颈-橡胶轴承摩擦副,可降低摩擦因数。

    Abstract:

    When the water supply system of ship stern bearing fails or the bearing is overloaded,the local contact will occur between the metal journal and the rubber bearing and the bearing will be in dry friction state.In order to study the effect of the surface roughness of metal journal on the dry friction characteristics of waterlubricated rubber bearings,the surface microconvex of metal journal was measured by the TIME3230 surface roughness measuring instrument.The location parameter distribution curve of surface microconvex of the metal journal was obtained and the denoising was carried out.The denoised model of surface roughness distribution of the metal journal was reconstructed by Fourier transform,and the friction coefficient of the metal journalrubber bearing friction pair under dry friction was calculated according to the theory.The calculation result of the friction coefficient of metal journalrubber bearing friction pair is in agreement with that of the actual situation,indicating that the established surface roughness distribution model of the journal is reasonable.The results show that,in dry friction state,the friction coefficient of the metal journalrubber bearing friction pair is increased linearly with the incresase of the amplitude of the surface roughness function,and is increased nonlinearly with the incresase of the characteristic wavelength coefficient of the surface roughness function.When the lubrication flow direction follows the direction of processing texture,the friction coefficient is smaller than that of the vertical processing texture direction and the 45° direction of the processing texture.Therefore,the friction and lubrication performances of the metal journalrubber bearing friction pair can be improved by choosing the reasonable amplitude and wavelength of the bearing surface roughness,and the friction coefficient can be reduced by processing and assembling the metal journalrubber bearing friction pair along the processing texture.

    参考文献
    相似文献
    引证文献
引用本文

杜媛英,李明.轴颈表面粗糙度对橡胶材料干摩擦特性的影响[J].润滑与密封,2019,44(3):99-104.
. ffect of Journal Surface Roughness on Dry Friction Characteristics of Rubber[J]. Lubrication Engineering,2019,44(3):99-104.

复制
分享
文章指标
  • 点击次数:
  • 下载次数:
  • HTML阅读次数:
  • 引用次数:
历史
  • 收稿日期:
  • 最后修改日期:
  • 录用日期:
  • 在线发布日期: 2019-07-04
  • 出版日期: