Introduction to Ansys LS-DYNA

Course 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 multiphysics 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.

 

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 Path

Currently, no Learning Path available

Learning Outcome

Following 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

Available Dates

Time Duration Event Type Location Language Course Cost Registration
January 25, 2021
11:00 - 13:00 EST (GMT -5)
8 Sessions
Jan 25-Feb 03
Virtual Virtual - WebEx English Subscription Only Register
March 2, 2021
10:00 - 12:00 CET (GMT +1)
8 Sessions
Mar 2-5, 8-11
Virtual Virtual - WebEx English Subscription Only Register
April 5, 2021
09:00 - 11:00 EST (GMT -5)
8 Sessions
Apr 05-09, 12-14
Virtual Virtual - WebEx
English Subscription Only Register

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

For virtual training, this course is covered over 8 x 2-hour sessions lectures only.

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

Virtual Classroom Session 1

  • Lecture 1: Introduction to LS-Dyna Explicit
  • Workshop: Keyword Editing workshop
  • Lecture 2: Keyword Input creation
  • Workshop: Ball impacting a place workshop
     

Virtual Classroom Session 2

  • Lecture 3: Introduction to Contact in LS-Dyna I
  • Workshop: Contact
  • Workshop: Tube Crush
     

Virtual Classroom Session 3

  • Lecture 4: Introduction to Contact in LS-Dyna II
  • Workshop: Rigid Walls
  • Lecture 5: Material models I
  • Workshop: Tensile test
     

Virtual Classroom Session 4

  • Lecture 5: Material models II
  • Workshop: Time step, Mass Scaling and Rigid Bodies
  • Lecture 6: Element types and Hourglass Control I
     

Virtual Classroom Session 5

  • Lecture 7: Element types and Hourglass Control II
  • Workshop: Element Formulations and Hourglass control
  • Lecture 8: Sensors and Rigid Bodies
  • Workshop: Sensor Control
  • Workshop: Joints and Rigid Bodies 
     

Virtual Classroom Session 6

  • Lecture 9: Spotwelds, Damping and Preload
  • Workshop: Spotwelds
  • Workshop: Bolt Preload
  • Lecture 10: Manufacturing Data, Include files
  • Workshop: Include Transform
     

Virtual Classroom Session 7

  • Lecture 11: Introduction to Implicit Analysis in LS-Dyna
  • Workshop: Normal modes
  • Lecture 12: Airbag Modeling
  • Workshop: Airbag Hybrid
     

Virtual Classroom Session 8

  • Lecture 13: Execution, Restarts and Output
  • Workshop: ASCII and Binary output
  • Lecture 14: Debugging Concepts, Guidelines, Decomposition
  • Workshop: Units