Study on Frictional Heating of Rough Surface in the Sliding Process

doi:10.11885/j.issn.1674-5086.2013.09.02.02

Abstract

Abstract:

In order to study the thermal dynamic problems of rough surface in the sliding friction process，we established a
sliding contact model based on G – W（Greenwood –Williamson）model. In the model，the two sliding surfaces were simplified
to an ideal smooth plane and another with spherical asperities. The coupled thermo-mechanical analysis for the sliding
friction process and temperature and stress distribution of the rough body were discussed in the paper. The temperature rise，the
equivalent stress and contact stress were analyzed under different relative sliding velocities，initial pressure intakes and friction
coefficients. The results show that the changing process of the highest temperature of the rough body with the movement time
can be divided into sharp and slow growth stage. The higher the relative sliding velocity，the greater the displacement under the
highest temperature in the first stage is. The durations of the first temperature changing stage are nearly 0.05 ms under different
initial pressure intakes. The maximum equivalent stress and contact stress of rough body increase with the increase of the initial
pressure intake and friction coefficient.

Key words: rough surface, sliding, contact, finite element method, thermo-mechanical coupling

Han Chuanjun*, Zhang Jie, Liang Zheng. Study on Frictional Heating of Rough Surface in the Sliding Process[J]. 西南石油大学学报(自然科学版), DOI: 10.11885/j.issn.1674-5086.2013.09.02.02.

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