Ls dyna tutorials

In crash analysis, the deformations can be very large and predetermination of where and how contact will take place may be difficult or impossible. For this reason, the automatic contact options are recommended as these contacts are non-oriented, meaning they can detect penetration coming from either side of a shell element. Contact treatment is internally represented by linear springs between the slave nodes and the nearest master segments.

The stiffness of these springs determines the force that will be applied to the slave nodes and the master nodes. There are several contact-related parameters in LS-DYNA that can be used to modify or, in many cases, improve contact behavior. Crash analysis involving a full vehicle incorporates contact interactions between all free surfaces. This is quite expensive since percent of the total calculation CPU time is used by the contact treatment.

Simulation of airbag deployment and interaction of an airbag with other components may require special contact treatment. Most contact types do not check for edge-to-edge penetrations as the search entails only nodal penetration through a segment. This may be adequate in many cases; however, in some unique shell contact conditions, the treatment of edge-to-edge contact becomes very important.

Navigation Toggle navigation. By using the website you agree ot its use. More information can be found in our privacy policy. Contact types In crash analysis, the deformations can be very large and predetermination of where and how contact will take place may be difficult or impossible. Contact stiffness calculation Contact treatment is internally represented by linear springs between the slave nodes and the nearest master segments.

Contact parameters There are several contact-related parameters in LS-DYNA that can be used to modify or, in many cases, improve contact behavior. Modeling guidelines for full vehicle contact Crash analysis involving a full vehicle incorporates contact interactions between all free surfaces. Airbag contact Simulation of airbag deployment and interaction of an airbag with other components may require special contact treatment. Edge-to-edge contact Most contact types do not check for edge-to-edge penetrations as the search entails only nodal penetration through a segment.

Rigid body contact.This folder contains several input decks that aim to progressively introduce the user to the main keywords and concepts used by the EM resistive heating solver. Some of the features are only available for LS-DYNA R12 branch or in recent Development versions so make sure to have the correct executable installed. The revision SVN number is always indicated in the header of the main input deck 'i. See the Download section for more information. This folder contains several input decks introducing the different ways of modelling battery charges and discharges by using the EM resistive heating solver as well as handling abuse scenarios that may trigger external or internal shorts.

See the Description and Download sections for more information. This folder contains several input decks that focus on the resistance spot welding application RSW. This folder contains examples using the EM solver and Eddy Currents. Applications include Magnetic metal forming EMFpulse welding, tube expansion, coil shape optimization, inductive heating, railgun and more.

The EM solver electrophysiology EP capabilities start with the simulation of the propagation of the cell transmembrane potential in the heart. In this directory, some benchmarking and validation cases are shown. Navigation Toggle navigation. You are here: Home EM.

By using the website you agree ot its use. More information can be found in our privacy policy. Tutorial Resistive heating This folder contains several input decks that aim to progressively introduce the user to the main keywords and concepts used by the EM resistive heating solver. Tutorial Battery modelling This folder contains several input decks introducing the different ways of modelling battery charges and discharges by using the EM resistive heating solver as well as handling abuse scenarios that may trigger external or internal shorts.

Tutorial Electrophysiology The EM solver electrophysiology EP capabilities start with the simulation of the propagation of the cell transmembrane potential in the heart.Important to read before starting with the other tutorials. Learn how to set up a simple finite element model in LS-PrePost.

Welcome to the LS-DYNA support site

Perform a tensile test, both explicit and implicit, and get familiar with basic material modeling. Using mesh tools in LS-PrePost and how the explicit time step is calculated are also covered in this tutorial. Get familiar with how to use material models for isotropic and kinematic hardening.

Failure criteria are also introduced in this exercise. This tutorial is divided into two parts. The first part consists of using the geometry and mesh tools in LS-PrePost. The second part includes how to prestress a bolt using dynamic relaxation.

A parameter identification will be performed. Navigation Toggle navigation. By using the website you agree ot its use. More information can be found in our privacy policy. Contents 0. Tensile test Perform a tensile test, both explicit and implicit, and get familiar with basic material modeling. Eigenvalue Perform an eigenvalue analysis of a tire. Hardening and failure Get familiar with how to use material models for isotropic and kinematic hardening.

Bolt pre-stressing This tutorial is divided into two parts.

ls dyna tutorials

Please see the attached file for the full Tutorials Update Contact us for further details on what we can do for your company. The online company was established in and we have been providing many live interactive courses to many companies and organizations. Shell elements modification for composite materials and various other development in the code. In addition, the instructor have been providing consulting work on various aspect of LS-DYNA to more than 80 companies and organizations.

We do consulting work in addition to instructions. If notes only are purchased then once the notes are recieved no more refund will be issued. Skip to content. Cost is per student. Register and pay for the training. We will send you the notes few days before the class date in PDF format. We will send go-to-meeting invitation 2 days before the course date. You login to go to meeting few minutes before the class time. Class starts and you attend the live interactive lectures. To accommodate west coast start time is am eastern time USA is possible.

Tote the intro course is 2 days instead of 3. However, it is exactly the same contents as the 3. These training courses are exactly the same and given by the same instructor at LSTC and at other onsite locations. Taking the lecture and workshops would be exactly the same course that we teach at LSTC and at other onsite locations.

Register your participation for Online Courses. Register Here!! Contact us if there is a need for any customized classes.Tutorial 1. Enter the parameters in the k-file in relation to the deformation of solid and shell materials.

Tutorial Tutorial 2. Simulation crimp in the program ls-dyna. Simulation the impact of the water container. Tutorial 3. Finite element modeling in the ls-prepost ls-dyna. Simulation the process overflow of the liquid in the container. Tutorial 4. Tutorial cutting in ls-dyna. Simulation of falling water in the container.

Tutorial 5. Simulation the impact of waves on the boat. Tutorial 6. Tutorial 7. Tutorial 8. Tutorial 9. Identification of material models elastic-plastic with destruction. Part 2. Description the basic video. Tutorial 1 Enter the parameters in the k-file in relation to the deformation of solid and shell materials. Tutorial 13 Simulation the impact of the water container. Tutorial 3 Finite element modeling in the ls-prepost ls-dyna.

Tutorial 15 Simulation the process overflow of the liquid in the container. Tutorial 4 Tutorial cutting in ls-dyna. Tutorial 16 Simulation of falling water in the container. Tutorial 19 Simulation the impact of waves on the boat. Tutorial 27 Identification of material models elastic-plastic with destruction.Tutorials may cover specific topics metalworking processes, explosions, flow dynamics and so onand individual LS-DYNA segments grid modeling, contact, material models, etc.

ls dyna tutorials

Tutorials on topics include a task setting, modeling stages, finite element mesh, parameter entry, calculation in LS-DYNA and output analysis. Video tutorials are created both for new LS-DYNA users students, postgraduates, engineering employeesand for experienced users. Tutorial time may vary, depending on complexity of a topic, from 15 to minutes, and they include detailed text explanations or vocal instructions. New on the site — short video tutorials.

ls dyna tutorials

Considered in detail k-files without the phased creation of the model Tutorial Tutorial Simulation of cutting using the peridynamics method in ls-dyna. Simulation of cutting using the SPG Galerkin method in ls-dyna. Simulation the impact of SPH waves on the boat. Part 2. Tutorial samples:. Tutorial 41 Simulation of cutting using the peridynamics method in ls-dyna.

Tutorial 39 Simulation the impact of SPH waves on the boat.The latest examples were presented at the Salzburg conference by George Laird. Ala Tabiei and Brad Maker. The copyright is with LSTC.

Welcome to LS-DYNA Examples

You may check the examples separately with the menu on the left. For educational purposes the examples have to be modified to run properly. The description of the examples explains how to work with each example. They are provided by Dr.

Art Shapiro. Art is one of the co-founders of LSTC. You may access the examples separately by using the menu on the left. You may access the examples separately by the menu on the left. Examples 4. The solver may run as a stand-alone CFD solver, where only fluid dynamics effects are studied, or it can be coupled to the solid mechanics solver to study loosely or strongly coupled fluid-structure interaction FSI problems.

Typical applications include magnetic metal forming and welding. A boundary element method in the air is coupled to finite elements in the conductor in order to avoid meshing the air.

The Discrete Element Method DEM is usually applied to predict the behavior of different types of granular media during mixing processes, storage and discharge or transportation on belts. Friction coefficients as well as spring and damper constants can be defined in normal and tangential direction. Herein, the required mechanical behavior of the bonds is automatically computed by LS-DYNA using the parameters given in the material card.

The adaptive EFG formulation is the method of choice for the efficient simulation of cutting, bulk forming and forging processes. In particular, the new features of local mesh refinement in combination with the implicit time integration are the key enablers for these processes. This method is a novel numerical framework for conservation laws.

It has many non-traditional features, including a unified treatment of space and time, the introduction of conservation element CE and solution element SEand a novel shock capturing strategy without using a Riemann solver.


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