Based on tribology,bearing heat transfer theory and finite element method,a computational model for fluid-solid coupling heat transfer of bearings was established.Ansys-Fluent software was used to simu-late and analyze the temperature field of double-row self-aligning roller bearings under grease lubrication,and experimental verification was carried out.The results indicate that the calculation accuracy of the model is high,with a relative error of 3.78%.The overall temperature distribution of the bearing is uneven,and the high-temperature area gradually transfers heat to the outside at the heat source of the inner and outer raceway,while the heat transfer of the rolling elements is relatively uniform.With the increase of load and speed,the average temperature of each component of the bearing shows a linear increase,and the tempera-ture rise of the rolling elements and the inner ring of the bearing is greater than that of the bearing seat and outer ring.The influence of viscosity of lubricating grease No.3 on the uniformity of temperature distribution of bearing components is constant>viscosity temperature curve>H-B rheological model.
维普
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