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A Method for the Optimal Design of Automotive Rubber Components

[+] Author Affiliations
Massimiliano Gobbi, Giorgio Previati, Gianpiero Mastinu

Politecnico di Milano, Milan, Italy

Paper No. DETC2012-70913, pp. 561-571; 11 pages
doi:10.1115/DETC2012-70913
From:
  • ASME 2012 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference
  • Volume 6: 1st Biennial International Conference on Dynamics for Design; 14th International Conference on Advanced Vehicle Technologies
  • Chicago, Illinois, USA, August 12–15, 2012
  • Conference Sponsors: Design Engineering Division, Computers and Information in Engineering Division
  • ISBN: 978-0-7918-4505-9
  • Copyright © 2012 by ASME

abstract

The paper presents a method for the design of rubber components for automotive applications.

The design of a rubber component is complex due to the dependence of its behavior not only on the geometry but also on the non-linear, frequency dependent characteristics of the material. A finite element (FE) model able to estimate stiffness, stress and filtering characteristics of the component is presented. The rubber is modeled by a non-linear model whose parameters are estimated from experimental tests. The dynamic behavior is described by means of storage and dissipation moduli given as function of the excitation frequency.

The design of the component, which is a bushing to be fitted on a front double wishbone suspension, is accomplished by changing the main geometrical parameters while choosing between three different rubber types. Geometrical and material parameters are varied inside the FE model by an automatic procedure. The optimal set is derived by means of a multi-objective genetic algorithm.

The proposed procedure allows to define the geometric dimensions of the component along with the most suitable material among a given set.

Copyright © 2012 by ASME
Topics: Rubber , Design

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