This paper concerns the finite element method as applied to the analysis of small oscillations about the non-linear equilibrium position in elastomeric components. The capability, which was developed at Ford, has been implemented in the general-purpose finite element program, MARC. The material behavior is treated by use of a modified form of the constitutive equations derived by Lianis [Proc. Fourth International Congress on Rheology, Pt. 2, 109 (1965)] using the finite linear viscoelasticity theory of Coleman and Noll [Rev. Mod. Phys., 33 239 (1961)]. In order to establish numerical accuracy, program predictions are compared with a closed form solution for the torsional and axial vibrations in a cylinder under axial and twisting pre-loads: differences between the finite element solutions and exact results are less than two (2) percent. The measured static force deflection response and dynamic stiffness k* (= k1 + jk2) of two automotive components used for vibration attenuation and isolation purposes is shown to be in good agreement with the theoretical predictions.


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    Title :

    Finite Element Analysis of Viscoelastic Elastomeric Structures Vibrating about Non-Linear Statically Stressed Configurations


    Additional title:

    Sae Technical Papers


    Contributors:

    Conference:

    4th International Conference on Vehicle Structural Mechanics ; 1981



    Publication date :

    1981-11-01




    Type of media :

    Conference paper


    Type of material :

    Print


    Language :

    English