This paper describes a new procedure for more accurate durability predictions of stress along edges of automotive body structures. The current elemental stress based CAE procedures often require iterative mesh refinement to correlate predictions to experimental cracking on the edges of components. The new proposed procedure is based on element nodal stress. It is first studied on a circular hole representing a notch in a rectangular plate with different element sizes and options. Elemental nodal stress demonstrates an improvement over elemental stress methods by correlating with theoretical notch stress result. The proposed procedure is then studied on multiple examples of experimental cracks and successfully predicts issues where the current elemental stress method does not. In addition, it avoids the iterative mesh refinement associated with the current methods. In summary, the new method based on nodal stress is more accurate, more efficient, and improves the first time through capability for stress calculations on the edges of structural components.


    Access

    Check access

    Check availability in my library

    Order at Subito €


    Export, share and cite



    Title :

    An Engineering Approach to Consider Stress Concentrations in Fatigue Life Predictions on Automotive Body Structures


    Additional title:

    Sae Technical Papers


    Contributors:

    Conference:

    WCX SAE World Congress Experience ; 2022



    Publication date :

    2022-03-29




    Type of media :

    Conference paper


    Type of material :

    Print


    Language :

    English




    An Engineering Approach to Consider Stress Concentrations in Fatigue Life Predictions on Automotive Body Structures

    Zhang, Weidong / Pankaj, Ananta / Archak, Vijay et al. | British Library Conference Proceedings | 2022



    Fatigue Life Predictions for High Strength Steels in Automotive Applications

    Sherman, A. M. / Krause, A. R. / Davies, R. G. | SAE Technical Papers | 1981


    Fatigue life predictions for high strength steels in automotive applications

    Sherman,A.M. / Davies,R.G. / Krause,A.R. et al. | Automotive engineering | 1981


    Fatigue Failure Predictions at Stress Concentrations Using Critical Distance Methods

    Lanning, David / Nicholas, Theodore / Palazotto, Anthony | AIAA | 2004