基于ANSYS的圆柱滚子轴承热-结构耦合变形研究

Thermal-structural coupling deformation study of cylindrical roller bearing based on ANSYS

高速运转的轴承会产生大量热,以某一型号的圆柱滚子轴承为例,通过理论计算公式求得在一定载荷作用下轴承滚子与滚道的摩擦功率,利用ANSYS有限元软件建立轴承的三维有限元模型并考虑此摩擦功率,仿真得到轴承整体及各组成部分的稳态温度场,并把结果导入结构分析,最终求解轴承热-结构耦合变形。结果显示正常工作状态的圆柱滚子轴承变形是结构载荷与热载荷共同作用的结果,高速运转轴承产生的热载荷对轴承旋转精度及轴承部件(尤其是滚子)的影响显著。圆柱滚子轴承的热-结构耦合变形研究为改善热载荷影响和降低轴承发热量的研究提供理论依据。

The roller bearing could generate a lot of heat in the high-speed running. A type of cylindrical roller bearing was set as the example. The friction power between the roller and the raceway under the certain load was obtained using theoretical calculating formula. The three-dimensional model of the bearing was established using the finite element software ANSYS. Considering the friction power mentioned above, the steady temperature field of the whole hearing and each component was simulated. The result was imported into the structural analysis to eventually solve the thermal-structural coupling deformation. The results demonstrated that the structural load and the thermal load were coupled together to lead to the deformation of the bearing. The thermal load had a great effect on the rotating accuracy and the component, especially the roller. The thermal-structural coupling deformation study of the cylinder roller bearing could provide the theoretical basis to improve the influence of thermal load and reduce the bearing heat.