Introduction to LS-DYNA

Overview

This course covers the basic capabilities of LS-DYNA. Detailed descriptions and requirements are given for data preparation with examples. Pre- and post-processing using LS-PrePost is also covered. This course is recommended for those who perform nonlinear static and transient simulations. Attendees working in nearly all fields of engineering will benefit. This course is a prerequisite for the advanced courses covering the multi-physics capabilities which include compressible and incompressible fluids, the airbag particle method, Arbitrary Lagrangian-Eulerian (ALE) fluids, thermal, acoustics, vibro-acoustics, metal forming, electromagnetics, discrete elements, failure, frequency response methodology, and isogeometric analysis.

Learning Outcome

With the completion of this course, you will be able to:

  • Understand the keyword structure of LS-DYNA
  • Understand key concepts of penalty and kinematic contacts
  • Have awareness of unit consistency while setting up your units for materials, element length and time
  • Distinguish between an acceptable "Normal Termination" and incorrect results

Prerequisites

  • Basic knowledge of Finite Element Analysis and Engineering Concepts 

Target Audience: Students, Design Release Engineers, CAE Engineers

Teaching Method: Lectures and computer practical sessions to validate acquired knowledge.

Learning Options: Training materials for this course are available with a ANSYS Learning Hub Subscription. If there is no active public schedule available, private training can be arranged. Please contact us.

Agenda SUBSCRIBE TODAY  

Topics Covered :

  1. Course Outline
  2. History
  3. Finite Element Simulation
    1. Sample LS-DYNA Conference Presentations
    2. Sample Simulations
  4. FE Analysis (pre-processors, solvers, post-processors)
  5. Detailed Example
    1. LS-DYNA Input Deck
    2. Using LS-PrePost
    3. Details of Post-Processing
  6. Detailed Capabilities - Keyword Format
  7. Material Nonlinearity
  8. Running LS-DYNA
    1. Execution and Output Files
      1. ASCII
      2. Binary
  9. Output Control
  10. FE Modeling Techniques
    1. Engineering a FEA Model
    2. Element Selection
      1. Discrete (formulation of elastic and nonlinear elastic spring)
      2. Beam
      3. Shell (description of the various shell formulations)
      4. Solid (description of the various solid formulations)
      5. Thick Shells
    3. Boundary and Initial Conditions, Symmetry
    4. Modeling for Physical Phenomenon
    5. Ad-Hoc Guidelines
    6. How to tell if your results are correct
      1. Er­ror, De­bug­ging, and Oth­er Use­ful In­for­ma­tion (d3hsp)
  11. Time Integration
    1. The Equations of Motion
      1. Implicit
      2. Explicit
  12. Explicit Time Integration
    1. Time Step Calculation
  13. Selectively-Reduced Integration
  14. Hourglass Phenomenon
  15. Contact and Slide Surfaces
    1. Friction
  16. Damping
  17. Restart
  18. Quasi-Static Simulations
    1. Why static analysis with explicit code
  19. Mass Scaling

Agenda :

This is a 3-day classroom course covering both lectures and workshops. For virtual training, this course is covered over 6 x 2 hour sessions lectures only.

Virtual Classroom Session 1 / Live Classroom Day 1

SESSION 1: Introduction to LS-Dyna Explicit

  • WS1: Keyword Editing workshop

SESSION 2: Keyword Input creation

  • WS1: Ball impacting a place workshop

Virtual Classroom Session 2 / Live Classroom Day 1

SESSION 3: Introduction to Contact in LS-Dyna

  • WS 1: Contact
  • WS 2: Tube Crush
  • WS 3: Rigid Walls

SESSION 4: Material models

  • WS1: Tensile test
  • WS2: Time step, Mass Scaling and Rigid Bodies

Virtual Classroom Session 3 / Live Classroom Day 2

SESSION 5: Element types and Hourglass Control

  • WS1: Element Formulations and Hourglass control

SESSION 6: Sensors and Rigid Bodies

  • WS1: Sensor Control
  • WS2: Joints and Rigid Bodies

Virtual Classroom Session 4 / Live Classroom Day 2

SESSION 7: Spotwelds, Damping and Preload

  • WS1: Spotwelds
  • WS2: Bolt Preload

SESSION 8: Manufacturing Data, Include files

  • WS1: Include Transform

Virtual Classroom Session 5 / Live Classroom Day 3

SESSION 9: Introduction to Implicit Analysis in LS-Dyna

  • WS1: Normal modes

SESSION 10: Airbag Modeling

  • WS1: Airbag Hybrid

Virtual Classroom Session 6 / Live Classroom Day 3

SESSION 11: Execution, Restarts and Output

  • WS1: ASCII and Binary output

SESSION 12: Debugging Concepts, Guidelines, Decomposition

  • WS1: Units
Filter By Country :
Date/Time Duration Event Type Location Language Class Cost
June 22, 2020
13:00 - 15:00   EST (GMT -5)
June 22, 2020 6 Sessions
Jun 22-26; 29
Virtual Virtual - WebEx English Subscription Only Register  ›
July 20, 2020
13:00 - 15:00   EST (GMT -5)
July 20, 2020 6 Sessions
Jul 20-24; 27
Virtual Virtual - WebEx English Subscription Only Register  ›

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