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Tutorials

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.

The first 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

A second 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

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

  • Reliability
  • Outlier Analysis

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.

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