x
Our website uses cookies. By using the website you agree ot its use. More information can be found in our privacy policy.

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.

 

Contents:

    • 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 -

    Details
    Date 26.01.2021 - 26.01.2021 (1 day)
    Lecturers Dr. D. Aspenberg
    Location Online
    Languages English, Swedish
    Price
    Standard (4000 SEK + VAT)
    Employee of University (2000 SEK + VAT)
    Student (2000 SEK + VAT)
    ICal