摘要
在滑动接触中 ,存在摩擦起热问题 ,运动机理对接触行为参数特性的影响不同于纯滚动接触。采用有限元方法 ,利用 ANSYS软件 ,对 2维滚滑模型进行分析 ,通过研究接触区的温度、接触应力和变形在运动学状态下的变化特性 ,可以看到接触状态的非稳定性必定会造成实际摩擦状态的不同 ,这也是形成接触表面不均匀磨损的原因之一。
A contact surface experiences the mechanical force, also endures the thermal load during service due to friction. The effect of these combined stresses has been analyzed in order to understand the thermal stress distribution.A model focuses a numerical method, based on the finite element method, for the thermo-mechanical finite element analysis of coupled stresses states in rolling-sliding contact. The problem is considered to be as two-dimensional. Commercial finite element software ANSYS5.7 has been used for the analysis. Finally, temperature gradients on contact area under coupled thermal and mechanical loads are calculated. The fluctuation on temperature history curve reflects the discontinuity of deformation. Contact region behaviors are explained and maximal shear stress and deformation history are also analyzed. Rolling-sliding is one reason of curved wear on contact surface.
出处
《中国机械工程》
EI
CAS
CSCD
北大核心
2002年第21期1880-1883,共4页
China Mechanical Engineering
基金
国家自然科学基金资助重大项目 ( 5 9990 470 )
国家自然科学基金资助项目 ( 5 9935 10 0 )
