The Parameterized Design And Finite Element Analysis Of Hub Unit Bearing

Automobile hub bearing unit is the higher bearing of the car, and also directly related to thesafety performance of the automobile parts. The third generation hub bearing unit has been widelyused in the car, at present. In order to enhance the vehicle maneuverability, reduces the vibration ofbrake and noise, improve the economy, safety and comfort. Hub bearing unit need to be integrated,lightweight, high stiffness, high reliability, long life and other high performance developments.Many performance index of wheel hub bearing is closely related to its mechanical properties, thestress analysis of hub bearing is one of the important segments of performance analysis. Comparedwith the general bearing, wheel hub bearings is more special than other components connected cars.The external load is very complex, such as the road condition, the tire characteristics, speed, drivinghabits. In order to improve the product design quality, shorten the development cycle, reduce thecost of development, CAD and CAE technology requires more use in product development.In this paper, introduces a fast implementation method of parametric design based on SolidEdge. Through establish the relationship between the three of Visual Basic language, Accessdatabase and Solid Edge. The inner ring of wheel hub bearing unit, for example, introduced thevariant design of principle, method and key technologies. First change variable name ofkey size, then change the key size, it could rapid generation of new three-dimensional entity andassemblies. The rapid modeling could analysis the effects of stress on interference fit join, achievethe software automation. The database use for data storage, data management and provideconsiderable convenience to extraction and retrieval in the days to come.In the first place, analyses of interference assembly stress on the mandrel and the inner ring,furthermore analysis of forces on hub unit bearing basis in steady-state-cornering mode. UsingSolid Edge to establish3D entity model and collaborative simulation and finite element analysisbase on ANSYS Workbench. The static analysis of interference fit join and external loads onthe mandrel and the inner ring, focuses on how to design the interference fit contact model. Theresults show that the mandrel riveting deforming control at the most vulnerable to failure, so that itshould be emphasis on the design. The results coincided the most easily damaged regions of hubbearing unit on the actual working conditions, this proves the feasibility of finite element model.Then, discussing the following factors such as the interference, the friction coefficient, the geometrywhich influence interference assembly stress of mandrel and inner ring by controlling variablesmethod. Finally, through the optimization design of the mandrel riveting deforming control at themost vulnerable to failure, compared with the results before and after optimization design. The results show that the optimization effect is obvious, and improves the performance of wheel hubbearing unit.