双粗糙滑动表面间接触热导研究

刘雨薇1,叶福浩2,李和言3,吴健鹏4, 孙能祥1

振动与冲击 ›› 2019, Vol. 38 ›› Issue (22) : 178-183.

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振动与冲击 ›› 2019, Vol. 38 ›› Issue (22) : 178-183.
论文

双粗糙滑动表面间接触热导研究

  • 刘雨薇1,叶福浩2,李和言3,吴健鹏4, 孙能祥1
作者信息 +

Thermal contact conductance between sliding rough surfaces

  • LIU Yuwei1,YE Fuhao2,LI Heyan3,WU Jianpeng4,SUN Nengxiang1
Author information +
文章历史 +

摘要

粗糙表面之间的接触热导对机械设备的可靠性和使用寿命具有非常重要的影响。本文对相对滑动的两个粗糙表面之间的有效接触热导进行了分析和预测,得到了适用于不同Pe数下的接触热导计算公式。研究表明:高Pe数下,滑动粗糙表面间的有效接触热导不仅与接触压强、材料热物性参数以及表面粗糙度有关,而且与滑动速度的平方根成正比;低Pe数或者静态下,材料参数、微凸体峰顶半径一定时,有效接触热导与接触压强成近似线性关系。该研究结果可为表面强化换热提供设计依据。

Abstract

Thermal contact conductance between contacting rough surfaces plays a significant role for the operational reliability and working life of machines. The effective thermal contact conductance between two rough sliding surfaces was analyzed and predicted, and a general equation applicable for the whole range of Peclet numbers was provided. The results reveal that at large Peclet number, the effective thermal conductance is not only dependent on the contact pressure, the thermo-physical properties of material and the surface roughness parameters, but also proportional to the square root of the sliding velocity. In addition, at low Peclet number, the thermal contact conductance and the contact pressure are approximately in a linear relation when the material properties and the asperity summit radii are given. These results provide guidances for the design of contact heat exchange.

关键词

滑动接触;粗糙表面;接触热导 / 热传导 / Peclet数

Key words

Sliding contact / Rough surfaces / Thermal contact conductance / Heat conduction / Peclet number

引用本文

导出引用
刘雨薇1,叶福浩2,李和言3,吴健鹏4, 孙能祥1. 双粗糙滑动表面间接触热导研究[J]. 振动与冲击, 2019, 38(22): 178-183
LIU Yuwei1,YE Fuhao2,LI Heyan3,WU Jianpeng4,SUN Nengxiang1. Thermal contact conductance between sliding rough surfaces[J]. Journal of Vibration and Shock, 2019, 38(22): 178-183

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