MULTI-CRITERIA KINEMATIC OPTIMIZATION OF A DOUBLE WISHBONE SUSPENSION MECHANISM

Vlad ȚOȚU, Cătălin ALEXANDRU

Abstract


This paper deals with the multi-objective kinematic optimization of a double wishbone suspension mechanism used for race cars. The optimization purpose is to keep the contact patch area constant, by reducing the camber angle variation, to keep the steering behavior the same, by reducing the castor angle, and to reduce the slip angle by decreasing the bump steer. The study uses a two steps tuning approach, in which the camber and castor metrics are tuned in the first step, while the bump steer is tuned in the second tuning step. The multi body system study was performed using MSC.ADAMS (namely ADAMS/View - to develop the kinematic model of the suspension system, and ADAMS/Insight - to configure and perform the optimization process). Finally, an in-house made app (S&KSP) based on MATLAB was developed for the mutual validation of the results.

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References


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