Contact Stress Analysis of Wind Power Main Bearing System Based on Rigid-flexible Mixed Multi-mechanical Model.

Double-row tapered roller bearings are one of the main bearings for semi-direct drive wind turbines. Its performance is directly related to its service life. At present, the research of double-row tapered roller bearings is mainly focused on single bearing, and the research of multicomponent bearing system is rarely considered comprehensively. In this paper, a rigid-flexible hybrid multi-force analysis model considering multiple components is proposed, which can be used for the analysis and research of system models. The results show that the contact load is similar to the theoretical contact load. The contact stress distribution of the left row roller along the prime line is more uniform, and there is only one row bearing near zero of the roller. The error between the simulation results and the theoretical calculation results is 4.56%, which is within the allowable range of error, so it is feasible to analyze the contact stress of the proposed rigidflexible mixed multi-mechanical system model. [ABSTRACT FROM AUTHOR]