LS-DYNA

This seminar lays the foundation for all users of LS-DYNA. Prior knowledge of finite element method is a pre-requisite for those willing to attend this seminar. The two-day schedule aims to provide comprehensive understanding of the theory and knowledge needed for using LS-DYNA.

Beginning with the fundamental pre-requisites required to use this tool, the seminar will cover details on element types, material, section and contact definitions, loads and boundary conditions, followed by implementing the simulations and interpretation of results through hands-on exercises. Details about this follows:

Introduction to LS-DYNA and its workflow

• Introduction to meshing
• Trivia about LS-DYNA and LSTC
• Typical application areas of LS-DYNA
• Overview of the essential features of the program
• Description of the workflow for LS-DYNA (including pre-processors)
• LS-DYNA and Parallel Computing
• Fundamentals of LS-DYNA: Explicit vs Implicit time integration and its consequences
• Stability of the time integration process and time-step control (mass scaling)

FE aspects of modeling LS-DYNA and its workflow

• Basics of FEM discretization for LS-DYNA and basic rules of meshing
• Available element types and their features (element integration, hourglass forms)
• Definition of material and section properties
• Definition of rigid bodies
• Introduction and discussion of the available contact types
• Applying boundary conditions and loads

Implementing LS-DYNA simulations

• Necessary and important control options for simulation; basic recommendations
• Influences on the simulation control
• Control of output data; available results files (ASCII and binary)
• Restart options and their implementation
• Damping options

Implementing of results

• Necessary and important control options for simulation; basic recommendations
• Graphical presentation of the results
• Time-History-post processing
• Important results and required inspections

Modification and completion of training example

• Necessary and important control options for simulation; basic recommendations
• Example remarks and modification by the participants
• Examples and hands on sessions: \" learn through your own mistakes \"
• About 10 examples dealing with problems such as drop-testing, impact loading, metal forming, etc. for improved understanding of contacts.

About LS-DYNA

LS-DYNA is a multi-purpose, explicit and implicit FEM program used to analyze linear, non-linear static and dynamic behavior of structures.  It is actively developed by the Livermore Software Technology Corporation (LSTC). For more information about LS-DYNA, please click here.