Numerical methods in simulation of resistance welding

Chris Valentin Nielsen, Paulo A.F. Martins, Wenqi Zhang, Niels Oluf Bay

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    Abstract

    Finite element simulation of resistance welding requires coupling betweenmechanical, thermal and electrical models. This paper presents the numerical models and theircouplings that are utilized in the computer program SORPAS. A mechanical model based onthe irreducible flow formulation is utilized to simulate plastic deformation and the resulting distribution of stress, a thermal model based on transient heat transfer is used to determine thedistribution of temperature, and a steady-state electrical model is employed to calculate thedistribution of electrical potential and current density. From a resistance welding point of view, the most essential coupling between the above mentioned models is the heat generation by electrical current due to Joule heating. The interaction between multiple objects is anothercritical feature of the numerical simulation of resistance welding because it influences thecontact area and the distribution of contact pressure. The numerical simulation of resistancewelding is illustrated by a spot welding example that includes subsequent tensile shear testing
    Original languageEnglish
    Title of host publicationProceedings of the VI International Conference on Coupled Problems in Science and Engineering
    EditorsBernhard A. Schrefler, Eugenio Oñate, Manolis Papadrakakis
    Place of PublicationBarcelona
    PublisherInternational Center for Numerical Methods in Engineering
    Publication date2015
    Pages322-333
    DOIs
    Publication statusPublished - 2015
    Event6th International Conference on Coupled Problems in Science and Engineering - Venice, Italy
    Duration: 18 May 201520 May 2015
    Conference number: 6
    http://congress.cimne.com/coupled2015/frontal/default.asp

    Conference

    Conference6th International Conference on Coupled Problems in Science and Engineering
    Number6
    Country/TerritoryItaly
    CityVenice
    Period18/05/201520/05/2015
    Internet address

    Keywords

    • Resistance Welding
    • Finite Element Method
    • Electro-Thermo-Mechanical
    • Phase Changes
    • Hardness
    • Damage

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