Design optimization under evidence based uncertainty with application to an engine connecting rod
Authors: S. Segonds, C. Gogu, Y. Qiu, C. Bes and A. Mauffrey
Institution: Université de Toulouse (France)
Abstract: Optimization in design is becoming increasingly popular in the field of mechanical engeering. A further step concerns the taking into account manufacturing variability during the initial phases of design optimization. A methodology for design optimization under uncertainty is proposed here. Classification of uncertainties is listed and a propagation method for epistemic uncertainty based on the interval theory is presented. Then this method is applied to the design determination of a connecting rod taking into account the uncertainty due to the re-fitting procees of the die cast. The design of two specific parameters is studied. Results are discussed before concluding.
Keywords: design optimization, design under uncertainty, Dempster-Shafer theory, engine connecting rod