Numerical Simulation on the Stress Distribution of High Speed Angular Contact Rolling Bearing

High speed angular contact rolling bearing is widely used in rotating support structure of precision machine tool spindle. The thermal stress induced by the frictional heat of ball and raceway takes a great role in the stress distribution and fatigue life of rolling bearing, especially at high rotate speed. Thermal effect on the stress distribution of high speed angular contact rolling bearing was numerically investigated in this paper. The temperature field and the contact stress of rolling bearing were calculated first via the combination of quasi static theory and finite element method. Based on the simulation technology, the thermal element was translated into the structural element, and the results show that, in consideration of thermal effect, the contact stress of high speed angular contact rolling bearing is larger than that ignored thermal effect.