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Indexed by:期刊论文

Date of Publication:2022-06-29

Journal:机械强度

Issue:3

Page Number:347-352

ISSN No.:1001-9669

Abstract:Sensitivity analysis formulae for optimizing the ride comfort of vehicle suspension systems are derived using the pseudo excitation method (PEM). A spatial finite element model is used to describe the dynamic behavior of a vehicle running on a randomly uneven road, of which the irregularity is assumed to be a Gaussian random process. Based on the random equations of motion with the right-hand side random acceleration replaced by a pseudo acceleration excitation, various first and second orders of sensitivity formulae are calculated conveniently by differentiating these equations. The optimal solutions when vehicle ride comfort is the objective function are derived by means of these flexibilities. The optimization efficiency and the computational accuracy are numerically justified.

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