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Achieving Weight Reduction in Automobile Wheels
Published January 01, 1982 by SAE Australasia in Australia
In preliminary trials weight reduction of the automobile wheel by the substitution of high strength sheet steels has not been as marked as that achieved in other automotive components. The principal difference between wheels and the other components is that the wheel is subjected to severe and complex cyclic loads during use.
To investigate the wheel design aspects of fatigue endurance, a library (data-base) of some typical automobile wheels has been established. Efficient data acquisition and editing techniques have been developed in order to implement design changes quickly and free of errors. This data-base serves as input to a finite element package (ABAQUS) through which one of the standard wheel tests is simulated.
Comparison has been made between failures on the real wheel in cornering fatigue experiments and strain distribution characteristics on the model. From this, indications can be obtained as to the effect of design parameters, such as windows, cut-outs, ribs, etc., on the life of the wheel. These observations have been used to develop a mass-efficient design for automobile wheels.