Identification LS-OPT
The utilization of new materials such as plastics, composites, foams, textile or high-strength steels require the application of highly complex material models. These material models generally bring along numerous material parameters, which are difficult to define. The optimization program LS-OPT is excellently suited for the identification of these parameters. By the parameterized simulation of the physical tests with LS-DYNA an automated calibration to the test results is performed. The objective is to minimize the error between the test results and the simulation results.
A short introduction to LS-OPT will be given and particularly the application of LS-OPT for the determination of material parameters will be discussed and demonstrated in this seminar. No previous knowledge in optimization or in the application of LS-OPT is required.
Content:
- Formulation of the optimization problem for identification of material parameters
- Objective function: Minimization of the error between simulation and test
- Constraints
- Optimization variables continous/discrete
- Scaling and weighting
- Min.-Max formulation: Minimization of the maximum discrepancy
- Brief introduction to LS-OPT
- Graphical user interface (GUI)
- Definition of the optimization problem for parameter identification in the LS-OPT GUI
- Simultaneous adaptation of several experiments (e.g. tension, shear and biaxial test)
- Start and job controlling of the LS-DYNA simulation in LS-OPT
- Evaluation and interpretation of the optimization results
- Workshop with examples
| Dates | Registration | Calendar | Duration/days | Location | Lecturer | Fee | Language |
| 08.02.2012 | 1 | Stuttgart | Dr. H. Müllerschön | 450,- EUR | german |
