Optimal redesign of a shock absorber using physical variables and the full dynamics of the suspension system

ABSTRACT

In this paper a nonlinear car model, comprising the dynamic behavior of the suspension system, which includes the body displacement, body acceleration, wheel displacement, tire deformation, suspension travel, suspension geometry, pitch, and roll, has been designed. The main contribution introduced in this model is that it considers the nonlinearities caused by the geometry of the suspension system and includes a detailed tire model. This model is used by a dynamic multiobjective optimization methodology in order to improve the passenger comfort and the vehicle safety. As result of the optimization a set of nondominated solutions is presented.

KEYWORDS:

• Car model
• multiobjective optimization
• suspension system

View correction statement:

Erratum

Acknowledgement

We thank the anonymous reviewers for their helpful suggestions, which greatly improved the quality of this paper.