Application of Evolutionary Structural Optimisation; Reinventing the (Bicycle) Wheel

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This paper reports the application of Evolutionary Structural Optimisation (ESO) to minimise the weight of a bicycle wheel rim. Two finite element models were developed to analyse the rims internal structure. The internal structure of a bicycle wheel rim consists of two walls connected by a rounded spoke bed, and a horizontal spar. One model was constructed with linear plate elements and suggested material should be distributed around the spoke bed and away from the rim walls, however inaccuracies were found in the spar section. ESO of the second model, consisting of linear brick elements presented similar results but modeled the spar section accurately. Results suggested that ESO applied to bicycle wheel rims can improve the performance of the wheel through weight reduction. These findings present a simple example to engineers who wish to use ESO for improvements to the material distribution of any hollow shell structure.

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830-835

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May 2014

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© 2014 Trans Tech Publications Ltd. All Rights Reserved

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