扭动微动温度场数值分析

Numerical Analysis of Torsional-Fretting Temperature Field

为探讨摩擦热对扭动微动的影响,进而深入了解扭动微动磨损损伤机理,基于有限元方法,开展扭动微动接触表面及次表面温升行为研究。通过分析不同法向荷载和微动频率下的表面及次表面温升得出:接触表面及次表面均有明显温升分布;且法向荷载和微动频率对表面温升有重要影响;表面温升主要由摩擦生热控制,同时也与热传导有关,而次表面温升主要由热传导控制。

With the purpose of discussing the influence of the frictional heat on torsional fretting and further understanding the damage mechanism of torsional fretting wear,the temperature rise behavior on the contact surface and subsurface has been analyzed via numerical modelling based on the finite element method.The temperature rise behaviors under different normal loads and fretting frequencies were predicted,then some conclusions have been attained.It was predicted that obvious temperature rise appeared on the surface and the subsurface,the normal loads and the fretting frequency had important influence on the contact surface temperature rise,and the surface temperature rise was mainly controlled by the frictional heat and was related to the heat conduction on some degree,while the subsurface temperature rise was mainly controlled by the heat conduction.