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MMCD LSOPT Interface

The basic fitting procedure is to use the MMCD GUI to select the material model parameters that the user wants to fit to test data, define a range in values for these parameters, and then perform numerous MMCD calculations over the range in values. LS-OPT creates multi-dimensional surfaces of the computed response versus parameter values. Then LS-OPT finds the parameter values that minimize the difference between each computed response surface and each test data point using an iterative optimization routine. Multiple response surfaces are created, and the differences are summed up, if multiple data points are analyzed.

Obtaining an LS-OPT license

LS-OPT must be obtained from an LS-OPT distributor.   Contact LSTC for your local distributor.

MMCD Steps for Performing an Optimization using LS-OPT

  • Optimization Setup
    • Optimization Title
    • Material Model
    • Point Selection
    • LS-OPT Iterations
  • Variable Selection
  • Dependent Variable Definition
  • Test Data Selection
  • MMCD Solver Definitions
  • Objective Definitions
  • MMCD Iteration Specification


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