Crash Analysis

This is an advanced course and applies to engineers who have experience in the application of explicit programs or basic knowledge in the field of dynamic and nonlinear calculation with implicit programs. The aim of the course is to show how to perform a crashworthiness simulation in the automobile industry using LS-DYNA, whereby the presented methods are transferable to other kinds of crashworthiness simulations (rail vehicles, components of vehicles, airplanes, vans, etc.).

Each crashworthiness simulation is a compromise between profitability and accuracy. At the moment there is no kind of a guideline for modeling and calculating crash. Therefore, the user has to be aware of advantages and disadvantages of different kinds of modeling procedures depending on the purpose of the simulation. In particular, the aim of the course is to show how to perform an accurate and reliable crashworthiness simulation by thorough modeling and further understanding of the procedure.

This course is designated for new employees from automotive development departments of car manufacturers and suppliers of the automobile industry as well as engineering companies and other users in related industrial sectors. The course instructor is an expert in crashworthiness simulation and is working for several car manufacturers using different FE-codes worldwide. He is also an excellent and popular teacher.

Please note that we cannot offer places for students for this seminar.

Contents

• Introduction to crash simulation using LS-DYNA
• possibilities and technical limits
• accuracy and reliability problems
• current and future developments
• Modeling techniques for parts of car bodies
• timestep control
• mesh-outlay, quality and convergence
• element quality
• flanges, weld spots, etc.
• Influence of the mass of components
• Contact definition for crash simulation
• Selection and description of suitable material models for steel materials
• Introduction to modeling techniques for foams and plastics
• Element formulation for shells and volume elements, hourglass stabilization
• Initialization of models, gravity and pre-tension
• Component models
• Quality control of FE models as well as analysis and evaluation of the results