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System-/Parameter Identification

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.

 

 

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Optimization Algorithm

  • Successive Response Surface Method (SRSM)

Curve Extraction

  • Intrface to LS-DYNA output
  • Target curve from file
  • Crossplots

Curve matching metrics

  • Mean Squarred Error
  • Curve Mapping (e.g. for hysteretic curves)

Visualization

  • History Plot
  • Visualization of simulated and target curve

 

 

 

 

  

 

 

 

 

 

 

 
Examples:
 
 

 

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