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平面往复滑动摩擦温度场分析

发表时间:2017-01-23  浏览量:2105  下载量:788
全部作者: 尤涛,郜庚虎,俞建卫
作者单位: 合肥工业大学机械工程学院
摘 要: 为分析平面往复滑动摩擦热及其温度场变化规律,使用实验及数值计算的方法开展研究。依托多功能摩擦磨损试验机,利用红外热像仪和热电偶测量平面往复滑动摩擦副的温度场;同时利用实验获得载荷、转速及实时摩擦系数,计算随时间和空间变化的热流密度,并作为移动热边界条件实现温度场的计算。通过实验和模拟结果的对比分析得出,平面往复滑动摩擦温度场分布主要受载荷、转速、摩擦系数的影响;建立的三维有限元模型能够较好地重现平面往复滑动摩擦温度场;转速(载荷)一定时,温度场稳态阶段的平均相对误差与载荷(转速)成负相关;同一工况的温度场绝对误差先逐渐变大,而后趋于稳定。
关 键 词: 机械摩擦、磨损及润滑;温度场;红外热像仪;有限元模型;误差
Title: Analysis on plane reciprocating sliding friction temperature field
Author: YOU Tao, GAO Genghu, YU Jianwei
Organization: School of Mechanical Engineering, Hefei University of Technology
Abstract: In order to analyze the change law of plane reciprocating sliding friction heat and temperature field, the methods of experiment and numerical calculation were used. Based on multifunctional friction wear tester, plane reciprocating sliding friction temperature field was measured by infrared thermal imager and thermocouple. Meanwhile, load, rotational speed and real-time friction coefficient were obtained by the experiment, and heat flux density with time and space was also calculated. The calculation of the temperature field was realized by using the heat flux density as moving heat boundary condition. The comparative analysis of the experimental and simulation results shows that distribution of the plane reciprocating sliding friction temperature field is mainly affected by load, rotational speed, friction coefficient. The established three-dimensional finite element model can better reappear plane reciprocating sliding friction temperature field. There is a negative correlation between In order to analyze the change law of plane reciprocating sliding friction heat and temperature field, the methods of experiment and numerical calculation were used. Based on multifunctional friction wear tester, plane reciprocating sliding friction temperature field was measured by infrared thermal imager and thermocouple. Meanwhile, load, rotational speed and real-time friction coefficient were obtained by the experiment, and heat flux density with time and space was also calculated. The calculation of the temperature field was realized by using the heat flux density as moving heat boundary condition. The comparative analysis of the experimental and simulation results shows that distribution of the plane reciprocating sliding friction temperature field is mainly affected by load, rotational speed, friction coefficient. The established three-dimensional finite element model can better reappear plane reciprocating sliding friction temperature field. There is a negative correlation between average relative error of temperature field at steady stage with load (rotational speed) at the same rotational speed (load). Absolute error of temperature field gradually increases first, and then tends to be stable under the same working condition.
Key words: mechanical friction, wear and lubrication; temperature field; infrared thermal imager; finite element model; error
发表期数: 2017年1月第2期
引用格式: 尤涛,郜庚虎,俞建卫. 平面往复滑动摩擦温度场分析[J]. 中国科技论文在线精品论文,2017,10(2):113-122.
 
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