Isogeometric Analysis (IGA) uses higher-order and higher-continuity spline basis functions known from Computer Aided Design (CAD) to describe the geometry and the solution field of the simulation model (mainly Non-Uniform Rational B-splines). This leads to a more accurate geometry description, a smooth solution field and therefore superior simulation properties compared to traditional Finite Element Analysis (FEA). Using the same geometry description for CAD and IGA also speeds up the modeling process for the simulation. Real components consist of multiple sheet metal parts connected by point-like joints (spot-welds, rivets, screws). These joints significantly influence the component behaviour under crash load. Therefore, their properties must be accurately described within the component simulation. Due to minimum time step requirements a detailed modelling of every single joint is impossible. Thus, substitute models are used in component simulations, which describe the joints behaviour based on constrained conditions between the joining partners. However, these substitute models are developed for traditional FEA. To enable the application of IGA to vehicle simulations, this paper investigates whether existing constrained-based substitute models (e.g. *CONSTRAINED_SPR3 spotweld elements) can be combined with isogeometric shell models without further modifications. Therefore, specimen and component tests are simulated with IGA and FEA. The simulation results are compared to each other as well as experimental test results. It can be shown that IGA achieves a very good agreement with the experimental results, with a prediction quality comparable to the traditional FEA. This allows a straightforward replacement of existing FEA shell components with their IGA counterparts in vehicle simulations.


    Zugriff

    Download


    Exportieren, teilen und zitieren



    Titel :

    Validation of the *CONSTRAINED_SPR3 Joint Formulation for Isogeometric Shell Models


    Weitere Titelangaben:

    ARENA2036


    Beteiligte:
    Holder, Daniel (Herausgeber:in) / Wulle, Frederik (Herausgeber:in) / Lind, Jannik (Herausgeber:in) / Bähr, Philipp (Autor:in) / Leidinger, Lukas (Autor:in) / Sommer, Silke (Autor:in) / Hartmann, Stefan (Autor:in)

    Kongress:

    Stuttgart Conference on Automotive Production ; 2024 ; Stuttgart, Germany November 21, 2024 - November 22, 2024



    Erscheinungsdatum :

    20.06.2025


    Format / Umfang :

    18 pages





    Medientyp :

    Aufsatz/Kapitel (Buch)


    Format :

    Elektronische Ressource


    Sprache :

    Englisch





    A Geometrically Exact Isogeometric Blended Shell: Formulation, Benchmarking, and Automotive Application

    Zou, Zhihui / Willoughby, David / Scott, Michael A. et al. | British Library Conference Proceedings | 2017


    A Geometrically Exact Isogeometric Blended Shell: Formulation, Benchmarking, and Automotive Application

    Willoughby, David / Alanoly, James / Scott, Michael A. et al. | SAE | 2017


    Isogeometric Weak Coupling of Shell Structures

    Guo, Yujie / Ruess, Martin | AIAA | 2015


    Isogeometric Weak Coupling of Shell Structures (AIAA 2015-0965)

    Guo, Yujie / Ruess, Martin | British Library Conference Proceedings | 2015


    Procedurally generated models for Isogeometric Analysis

    Stein, Peter | TIBKAT | 2013

    Freier Zugriff