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LS-OPT Training Class Tutorial Problems

This tutorial problem set allows LS-OPT users to exercise aspects of mathematical optimization, design optimization and robust design. LS-OPTui is used to create or modify the input.

A first part of the problem set attempts to simulate the design process for examples that are typical for the LS-DYNA® user. Detours have been introduced to investigate features related to a particular design step in more detail. The examples are

  • Crashworthiness optimization of a vehicle
  • Mode tracking
  • Multidisciplinary Design Optimization
  • Material parameter identification

Another example has an explicit algebraic formulation. The purpose is to introduce the user to the mathematical aspects of approximations, accuracy and convergence. The example is

  • Nonlinear explicit problem

The final part of the problem set teaches the user how to assess reliability of a design, investigate the sources of variability on the FE model and incorporate the effect of uncertainties during design. The categories are:

  • Reliability
  • Outlier Analysis
  • Reliability-based design optimization
  • Robust design

The run times for the examples vary between a few seconds (simple explicit problems) and ~10 min. (3GHz) (Iterative optimization using LS-DYNA for crash optimization). The longest DYNA simulation time is about 15s.