摘要
建立了由滑块和导轨组成的滑动摩擦副有限元模型,对整个运动过程进行了热力耦合分析,并研究了载荷量、运动速度、往复周期和摩擦因数对导轨的应力场和温度场的影响情况。结果表明:导轨表面的应力和温度在与滑块接触时刻出现最大值,而且波动性较大;导轨沿深度方向的应力值在不同运动时刻呈现不同的变化规律;导轨表面的应力值和温度值随着载荷量、运动速度、运动周期和摩擦因数的增加而增加;摩擦因数仅影响导轨温度的变化规律,运动周期次数对导轨的应力和温度变化规律均产生了影响。
The finite element model of sliding friction pair was established, which contains the sliding block and guide rail. The coupled thermal-mechanical analysis of the movement process was completed.The effects of load, movement speed, reciprocating cycle and friction coefficient on the temperature field and thermal stress field of the guide rail are analyzed. The results show that： the maximum surface stress and the maximum temperature of the guide rail appear the position when the two surface contact,and have a greater volatility. The stress value of the guide rail presents different variation rule in different movement along the depth direction. The stress and temperature increase with the increase of load, movement speed, reciprocating cycle and friction coefficient. Friction coefficient only affected the temperature variation rule of the guide rail, and reciprocating cycle has a big influence on the stress variation rule and the temperature variation rule.
出处
《煤矿机械》
2015年第11期140-142,共3页
Coal Mine Machinery
基金
四川省科技创新苗子工程资助项目(2014-025)
关键词
滑动摩擦副
有限元
摩擦生热
应力
sliding friction pair
finite element
friction heating
stress
