扭动微动摩擦力数值分析  

Numerical simulation analysis for torsional-fretting friction force

作　　者：刘娟[1] 沈火明[1] 

机构地区：[1]西南交通大学力学与工程学院,四川成都610031

出　　处：《机械设计》2015年第5期78-81,共4页Journal of Machine Design

基　　金：国家自然科学基金资助项目(11172250);中央高校基本科研业务员专项资金(A0920502051413-38)

摘　　要：为揭示扭动微动接触表面摩擦力分布规律及其对表面磨损的影响,进一步丰富和完善扭动微动损伤机理,基于试验中扭动微动摩擦扭矩的变化,利用ABAQUS用户子程序Fric引入动态变化的摩擦因数,对扭动微动表面摩擦力学行为开展数值模拟分析。摩擦扭矩数值模拟和试验结果的对比分析验证了数值模拟方法的正确性。接触表面摩擦力分布及与试验磨损形貌的对比分析表明:摩擦应力的剪切作用对表面材料损失起着至关重要的作用,不同滑移区摩擦应力分布不同,故呈现的磨痕形貌不同。In order to find the distribution rule of the friction force on the torsional-fretting（TF） contact surface, also the ef- fect resulted by the friction force on surface wear, and enrich and improve the TF damage mechanism, a variable coefficient of friction was introduced by using subroutine FRIC in ABAQUS to simulate the mechanics behavior of TF surface friction based on variety of friction torques in the TF experiment. One contrast of friction torques between numerical simulation and test results proves that the numerical simulation is con＇ect. Another contrast between the distribution of the friction force on the contact sur- face and worn scar shows that the friction-stress affects loss of surface material greatly, and the worn scar is different when fric- tion-stress distribution changes.

关 键 词：扭动微动 摩擦力 数值模拟 磨痕形貌 

分 类 号：TB487[一般工业技术—包装工程]