This paper presents an innovative finite element (FE) algorithm for the contact problem of the multileaf spring in vehicles. The well-established classic beam theory is adopted to construct the complementary strain energy variational. A piecewise contact stress pattern is approximated to the real contact state between two layered beams. The vector of nodal contact stresses is taken to represent primary state variables. To implement the principle of the least complementary energy, a quadratic programming (QP) problem with equality and unilateral constraints is formulated. The corresponding Kuhn-Tucker condition is equivalent to the linear complementary problem. In this study, Lemke's algorithm is applied to solve for the nodal stress vector and subsequently to determine the contact stress distribution over the contact surfaces between the layered beams. The algorithm is verified against experimental stress analysis, and it is found that the computation and test correlate well.


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    Title :

    A contact finite element algorithm for the multileaf spring of vehicle suspension systems


    Additional title:

    Finite-Elemente-Kontaktalgorithmus für Mehrblattfedern in Fahrzeug-Aufhängungssystemen


    Contributors:
    Li, Qing (author) / Li, Wei (author)


    Publication date :

    2004


    Size :

    10 Seiten, 13 Quellen




    Type of media :

    Article (Journal)


    Type of material :

    Print


    Language :

    English






    A contact finite element algorithm for the multileaf spring of vehicle suspension systems

    Li,Q. / Li,W. / James Cook Univ.,AU et al. | Automotive engineering | 2004


    Two-Stage Multileaf Spring Design

    Mikaila,J. / General Motors,Chevrolet Motor Div.,US | Automotive engineering | 1973


    Two-Stage Multileaf Spring Design

    Mikaila, Jurgis | SAE Technical Papers | 1973