This paper develops a reliability-based methodology for the evaluation of stiffness degradation of spot-welded joints under high mileage. A global-local finite element analysis is used, with the loads on the detailed three-dimensional joint model coming from finite element analysis of the entire car model with proving ground loads. Probabilistic fatigue crack propagation analysis is developed for multi-axial variable amplitude loading history on the joint. Multiple spot welds contribute to the stiffness of the joint. Hence the problem is addressed through system reliability techniques. The effect of spot-weld separation on joint stiffness, and on global vehicle stiffness, is incorporated. This results in the computation of the statistics of vehicle stiffness degradation with mileage.


    Access

    Check access

    Check availability in my library

    Order at Subito €


    Export, share and cite



    Title :

    Spot-Weld Joint Stiffness Degradation Under High Mileage: Probabilistic Analysis


    Additional title:

    Sae Technical Papers


    Contributors:

    Conference:

    SAE 2003 World Congress & Exhibition ; 2003



    Publication date :

    2003-03-03




    Type of media :

    Conference paper


    Type of material :

    Print


    Language :

    English




    Spot-weld joint stiffness degradation under high mileage: probabilistic analysis

    Mahadevan,S. / Hollander,B. / Ni,K. et al. | Automotive engineering | 2003


    Spot-weld joint stiffness degradation under high mileage: probabilistic analysis

    Mahadevan, S. / Hollander, B. / Ni, K. et al. | Tema Archive | 2003


    The effect of high mileage spot weld degradation on vehicle body joint stiffness

    Kuo,E.Y. / Jayasuriya,A.M. / Wung,P. et al. | Automotive engineering | 2001


    The Effect of High Mileage Spot Weld Degradation on Vehicle Body Joint Stiffness

    Jayasuriya, A. M. M. / Kuo, E. Y. / Wung, P. | SAE Technical Papers | 2001


    Optimized spot weld patterns regarding stiffness and fatigue

    Puchner, Klaus / Dannbauer, Helmut / Meise, Matthias | Tema Archive | 2007