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Parameter Identification with LS-OPT

The use of new materials, such as plastics, composites, foams, fabrics or high-tensile steels, demands the application of highly complex material models. These material formulations are generally associated with numerous material parameters. The optimization program LS-OPT is ideally suited for identifying these parameters. In the identification process, an automatic comparison is carried out between the experimental results and the simulation results of LS-DYNA. Thereafter, the error between experiments and simulations is minimized.


In this seminar, a brief introduction in LS-OPT is made with a focus on the application of LS-OPT to determine material parameters. No prior knowledge about optimization or the application of LS-OPT is required.



    • The optimization problem for the parameter identification

    - Objective function: to minimize deviations between simulations and experiments (least-squares principle)
    - Constraints
    - Optimization variables
    - Normalization and weighting
    - Min. / max. formulation: minimizing the maximum deviation

    • Brief introduction to LS-OPT
    • Graphical User Interface (GUI)
    • Simultaneous adaptation of several experiments (e.g. tensile test, shear test and biaxial test)
    • Starting LS-DYNA simulations and job control in LS-OPT
    • Analysis and evaluation of optimization results
    • Execution of examples


    - Jan. 2013 -

    Dates Duration/days Registration Referee Language Location Fee
    1 day Dr. D. Aspenberg English, Swedish Linköping 4000 SEK
    1 day Dr. D. Aspenberg English, Swedish Linköping 4000 SEK
    1 day Dr. D. Aspenberg English, Swedish Online 4000 SEK


    Dr. D. Aspenberg

    Dr. D. Aspenberg