The fatigue behavior of many structures, e.g. chassis components, or frame structures, often is restricted by the fatigue life of their welded joints. The fatigue of welds depends on the stress and strain histories in the toes and roots of the weld. Numerous research projects in the past have shown that knowing these stress histories (notch stresses) allows good fatigue prediction for welds. But the roots and toes are geometrically complex and of course also depending on the real welding process and therefore it efforts a lot of manual modeling to achieve local notch stresses by Finite Element simulation.Due to this methods have been developed to simplify the modeling effort and evaluate the local stresses and fatigue from the local load situation in the weld joint itself. These methods had been restricted to sheet structures modeled by shell-elements. In thick structures more and more modeling by solid elements is used in practice. In several application sheets are welded to casted structures.This paper shows a new approach to calculate the notch stresses for arbitrary connections between shells-shells, solids-solids and shells-solids and presents a new technology to automatically include the notch effect in the calculation using Neuber's microscopic structural length.


    Access

    Check access

    Check availability in my library

    Order at Subito €


    Export, share and cite



    Title :

    New Methodologies for Efficient and Accurate Fatigue Prediction of Seam Welds


    Additional title:

    Sae Technical Papers


    Contributors:

    Conference:

    SAE 2013 World Congress & Exhibition ; 2013



    Publication date :

    2013-04-08




    Type of media :

    Conference paper


    Type of material :

    Print


    Language :

    English




    New Methodologies for Efficient and Accurate Fatigue Prediction of Seam Welds

    Hack, M. / Zingsheim, F. / Society of Automotive Engineers | British Library Conference Proceedings | 2013


    A New Approach for Numerical Fatigue Life Prediction of Parts or Systems with Seam Welds

    Zingsheim, Frank / Hack, Michael / Speckert, Michael et al. | SAE Technical Papers | 2003


    Fatigue assessment of seam welds of automotive components by local stress approaches

    Bruder, T. / Störzel, K. / Baumgartner, J. | Tema Archive | 2008


    20037046 2003-01-2772 A New Approach for Numerical Fatigue Life Prediction of Parts or Systems with Seam Welds

    Koettgen, V. B. / Zingsheim, F. / Hack, M. et al. | British Library Conference Proceedings | 2003


    Prediction of fatigue properties of laser welds

    Larsson,J.K. / Abulwahab,F. / Volvo,SE | Automotive engineering | 2000