Research on the bearing wear characteristics of wind turbine based on finite element analysis and Archard model
Wear is one of the factors affecting the lifespan of wind turbine bearings.Existing wear re-search not only requires a large amount of model calculations,but also rarely involves the analysis of wear and influencing factors in bearing contact and wear evolution.Therefore,based on the Archard wear model,finite element analysis is used to simulate the contact and wear of wind turbine bearings in the actual operation.The evolution process of bearing contact and wear characteristics is explored within the range of curvature radius coefficients of grooves from 0.515 to 0.550.The results show that the simulation of bearing contact characteristics is in good agreement with the calculation results of Hertz theory,and the local simulation model has good accuracy.When the curvature radius coeffi-cient of groove increases,bearing fit and contact profile between the raceway and the rolling element decrease,resulting in a decrease in the overall contact area and an increase in contact pressure.How-ever,a decrease in contact area will result in a decrease in the slip velocity difference and slip amount on the contact surface,leading to lower wear on the contact surface.Therefore,a smaller bearing fit can extend the lifespan of bearing wear,thus improving the overall operating time of wind turbine.The research results can provide reference for the design and application of wind turbine bearing.
wind turbinebearingfinite element analysiscontactwear
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