Welding has been used extensively in automotive components design due to its flexibility to be applied in manufacturing, high structural strength and low cost. To improve fuel economy and reduce material cost, weight reduction by optimized structural design has been a high priority in auto industry. In the majority of heavy duty vehicle's chassis components design, the ability to predict the mechanical performance of welded joints is the key to success of structural optimization. FEA (finite element analysis) has been used in the industry to analyze welded parts. However, mesh sensitivity and material properties have been major issues due to geometry irregularity, metallurgical degradation of the base material, and inherent residual stress associated with welded joints. An approach, equilibrium-equivalent structural stress method, led by Battelle and through several joint industrial projects (JIP), has been developed. The method uses a combination of FEA, linear elastic fracture mechanics (LEFM) and the Master S-N Curve for life prediction of welded joints. In this paper, the methodology of using structural stress and Master S-N Curve is summarized. Application of this methodology in product development support is exemplified by three case studies on welded joints in spring seat, axle bracket, and drive train component.


    Access

    Access via TIB

    Check availability in my library

    Order at Subito €


    Export, share and cite



    Title :

    Weld durability analysis by equilibrium-equivalent structural stress approach


    Contributors:
    Wang, Yenkai (author) / Shih, Shan (author)


    Publication date :

    2006


    Size :

    8 Seiten, 22 Bilder, 8 Quellen




    Type of media :

    Conference paper


    Type of material :

    Print


    Language :

    English




    Weld Durability Analysis by Equilibrium-Equivalent Structural Stress Approach

    Shih, Shan / Wang, Yenkai (Brian) | SAE Technical Papers | 2006


    2006-01-3576 Weld Durability Analysis by Equilibrium-Equivalent Structural Stress Approach

    Wang, Y. / Shih, S. | British Library Conference Proceedings | 2006



    CAE Weld Durability Prediction: A Robust Single Damage Parameter Approach

    Hong, J. K. / Dong, P. | SAE Technical Papers | 2002


    SPOT WELD FATIGUE DURABILITY PERFORMANCE THROUGH THE USE OF FEA

    Stocco, D. / Vilela, D. / Batalha, G.F. et al. | British Library Conference Proceedings | 2009