• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Tribology Transactions >Parametric Analyses of the Mixed-Lubrication Performance of Rolling/Sliding Contacts in High-Load and High-Speed Conditions
【24h】

Parametric Analyses of the Mixed-Lubrication Performance of Rolling/Sliding Contacts in High-Load and High-Speed Conditions

机译：高负载和高速条件下滚动/滑动触点混合润滑性能的参数分析

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

This article conducts a theoretical analysis of the mixed lubrication rolling/sliding contacts using a recently developed mathematical model that incorporates asperity-level mechanical, thermal, and tribochemical aspects into the bulk elastohydrodynamic setting. A systematic parametric analysis is carried out to study the mixed lubrication in high-load, high-sliding conditions. The parameters studied include contact size, surface roughness, surface hardness, surface boundary film property, and operating load and speed. The performance and the state of contact and lubrication of the system are measured by load sharing between fluid and solid, area of asperity contacts, fraction area of asperity contacts undergoing plastic flow, as well as experimentally measurable variables such as traction coefficient, friction power intensity, and temperature of the contact. The results show that the surface roughness, surface hardness, load, and sliding velocity are very important parameters affecting the state and severity of the mixed lubrication. The results also suggest that there may be an optimal range of surface hardness to achieve the best performance. A hardness that is too low is vulnerable to mechanical stress-induced plastic deformation, whereas a hardness that is too high may cause thermal stress-induced surface distress in high sliding. The authors hope that the model and the theoretical approach can be used in conjunction with experiments to gain more fundamental insights into the performance and failure of high-load, highspeed rolling/sliding contacts in mixed lubrication.
机译：本文使用最近开发的数学模型对混合润滑的滚动/滑动接触进行了理论分析，该模型将粗糙程度的机械，热和摩擦化学方面纳入了整体弹性流体力学设置。进行了系统的参数分析，以研究高负荷，高滑动条件下的混合润滑。研究的参数包括接触尺寸，表面粗糙度，表面硬度，表面边界膜的性质以及工作负荷和速度。系统的性能以及接触和润滑的状态通过流体和固体之间的负载分担，粗糙接触的面积，经历塑性流动的粗糙接触的分数面积以及实验可测量的变量（例如，牵引系数，摩擦强度）来测量以及接触点的温度。结果表明，表面粗糙度，表面硬度，载荷和滑动速度是影响混合润滑状态和强度的非常重要的参数。结果还表明，可能存在最佳范围的表面硬度以获得最佳性能。太低的硬度容易受到机械应力引起的塑性变形，而太高的硬度可能在高滑动中引起热应力引起的表面应力。作者希望该模型和理论方法可以与实验结合使用，以更深入地了解混合润滑中高负荷，高速滚动/滑动接触的性能和故障。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号