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ANALYSIS ON THERMAL ELASTO-PLASTIC ASPERITY CONTACTS OF LAYERED MEDIA 被引量:1

ANALYSIS ON THERMAL ELASTO-PLASTIC ASPERITY CONTACTS OF LAYERED MEDIA
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摘要 A thermal elasto-plastic asperity contact model is investigated, which takes into account the steady-state heat transfer and the asperity distortion due to thermal elasto-plastic deformations. A hard coating and a soft coating are applied to study the correlations between contact area and contact pressure, average gap and contact pressure, coating thickness and contours of the contact stress distribution, etc. The effects of material properties, coating thickness, frictional coefficient, and the heat input combinations on the stress distribution are investigated and discussed. The frictional heat input increases the maximum value of yon Mises stress. Finally, the appropriate thickness of the hard coating is also discussed. To protect the substrate, one can choose hard coating and the thickness of that is suggested that can be hc=70 Rm. A thermal elasto-plastic asperity contact model is investigated, which takes into account the steady-state heat transfer and the asperity distortion due to thermal elasto-plastic deformations. A hard coating and a soft coating are applied to study the correlations between contact area and contact pressure, average gap and contact pressure, coating thickness and contours of the contact stress distribution, etc. The effects of material properties, coating thickness, frictional coefficient, and the heat input combinations on the stress distribution are investigated and discussed. The frictional heat input increases the maximum value of yon Mises stress. Finally, the appropriate thickness of the hard coating is also discussed. To protect the substrate, one can choose hard coating and the thickness of that is suggested that can be hc=70 Rm.
出处 《Chinese Journal of Mechanical Engineering》 SCIE EI CAS CSCD 2008年第2期5-12,共8页 中国机械工程学报(英文版)
基金 National Natural Science Foundation of China (No.50475146) Specialized Research Fund for the Doctoral Program of Higher Education of Ministry of Education,China (No.20030699035) Natural Science Foundation of Shaanxi Province,China (No.2004E_225,No.2005E_226) Northwestern Polytechnical University Foundation for Fundamental Research (NPU-FFR-20060500W018101)
关键词 Thermal elasto-plastic contact Rough surfaces Coating Thermal elasto-plastic contact Rough surfaces Coating
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参考文献13

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同被引文献12

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