LS-DYNA®

The advanced Multiphysics solver for complex, real-world engineering problems

LS-DYNA®

LS-DYNA® is the industry leading multi-purpose explicit and implicit finite element and Multiphysics program used to analyse the nonlinear response of structures.

Its fully automated contact analysis and wide range of material models enable users worldwide to solve complex, real-world problems. Its applications include drop tests, impact and penetration, smashes and crashes, occupant safety, and more.

Benefit from the Oasys LS-DYNA Environment, our pre and post-processing software designed specially to work with LS-DYNA.

© Christoph Bolton

Applications

  • Crashworthiness

  • Occupant and Pedestrian Safety

  • Manufacturing Processes

  • Product Testing

  • Drop Testing

  • High Velocity Impacts

  • Blast Loading

  • Biomedical

  • Civil Engineering

  • Rail Engineering

  • Seismic Engineering

  • Electro Magnetism

  • Compressible Fluids Flow

  • Incompressible Fluids Flow

Analysis Capabilities

  • Explicit and Implicit Time Integration

  • Analysis Capabilities

  • Linear and Non-Linear Statics

  • Nonlinear Dynamics

  • Large Deformations

  • Arbitrary Lagrange Eulerian (ALE)

  • Sophisticated Material Models

  • Complex Contact Conditions

  • Thermal Analysis & Thermostructural Coupling

  • Fluid Dynamics and Fluid Structure Interactions

  • Smooth Particle Hydrodynamics (SPH)

  • Element Free Galerkin (EFG)

  • Eigenvalue Calculations

  • Discrete Element Analysis

  • Frequency Domain Problems

© SLC

Crashworthiness

For many automotive companies, LS-DYNA is a tool for understanding the deformation of complex systems such as vehicle structures. The ability of LS-DYNA to model contacts and its wide range of material models make it ideally suited for this type of analysis. It also includes a number of specific features for automotive applications such as airbags, accelerometers, and adhesive connection modelling.

© Arup / THEME Engineering

Drop Testing

LS-DYNA has been used to simulate impact events for many years, ranging from small electronic products such as mobile phones and laptop computers, to large nuclear fuel containers. Features include:

  • Fluid Structure Coupling (ALE / SPH) for modelling liquid filled containers
  • Element Free Galerkin (EFG) for modelling cracks
  • Explicit–implicit switching for studying steady state deformation

Manufacturing Processes

LS-DYNA can be used to model and analyse manufacturing processes and to assess a proposed metal forming process and tool design. Along with the forming process users can simulate trimming and springback. Processes supported include:

  • Deep Drawing and Springback
  • Rolling, Pressing, Forging, Casting and Spinning
  • Superplastic Forming
  • Multi-stage Processes and Metal Cutting
  • Roller Hemming and Profile Rolling

Blast and High Velocity Impact

LS-DYNA can be used for the simulation of high energy events making it well suited to blast events. It is possible to simulate air blasts as well as buried explosive charges and blast loads on structures. Blast methods include:

  • ConWep Analysis.
  • Fluid–structure Interaction Analysis.
  • Can also combine pressure time history data taken from external tests.

Frequency Domain Analysis

LS-DYNA offers frequency domain analysis capabilities including:

  • Response Function
  • Steady State Dynamics
  • Random Vibration
  • Acoustic Boundary Element Method
  • Acoustic Finite Element Method
  • Response Spectrum
  • Fatigue Analysis

Composites

Composite materials can be modelled in LS-DYNA using a combination of specialist material models and ply material angle data. Varying material definition and material angle can be specified through the thickness of the component, and ply failure can be included in the material definition.

  • Material models can simulate both fibre and matrix failure
  • Layered shell elements for modelling ply layup
  • Uniaxial and bidirectional fabric material models
  • Detailed output on the different failure modes

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Terms & Conditions

Contents

Privacy and Cookies

Data Security

Website Terms and Conditions

Software Licensing Terms

Privacy and Cookies

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We do this by using cookies, which are small files that help us track how our visitors use the website and enable us to understand where we can improve your experience. If you would like to find out which cookies we use and the information they track see our Cookies Policy.

Once you submit or register information through our website we will know who you are and your activities on this website and information about you and/or your company may be recorded on our systems. For example, we may ask for personal information when you download our software including:

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Website Terms and Conditions

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Oasys accepts no responsibility for the content of any external site that links to or from this site.

Software Licensing Terms

Terms and Conditions of Purchase

The full conditions of purchase and maintenance for all Oasys software are set out in the Oasys Software Licence and Support Agreement. All prices are subject to TAX at the current rate.

Prices and specifications are subject to change without notice – please ask for a written quotation.

Although every care has been taken to ensure the accuracy of all information contained herein, the contents do not form or constitute a representation, warranty, or part of any contract.

Superseded Versions of Terms and Conditions

Oasys keeps copies of all superseded versions of its terms and conditions.

Maintenance & Support Services

Twelve months support and maintenance is included with most products. Thereafter maintenance is calculated as a percentage of the current sales price.

An annual maintenance service is available for most programs after the first year.

This service includes:

  • telephone/fax/email/web based support
  • free software updates available via internet download
  • personalised output header for many products

Terms & Conditions

Trials Terms & Conditions Contents

This is a legal licence agreement (“Agreement”) between you (“User”) and Oasys Ltd (“Oasys”). Please read carefully the terms and conditions of this Agreement before downloading, installing or using any of the Software referred to herein.

 

By clicking “Accept T&Cs” below, supplying Oasys with the User’s contact details for the purpose of downloading/using the Software or downloading, installing or using the Software the User acknowledges and agrees that:

 

If the User does not agree to be bound by the terms of this Agreement they may not download, install or use the Software.

 

GRANT OF LICENCE: Oasys grants the User the right to use free of charges, a copy of the Oasys Suite of Software programs / LS-DYNA software / FEMZIP Software / Barrier FE Model / Pedestrian FE Model and related documentation (collectively “Software”) for evaluation and demonstration purposes only for the term of this Agreement. Unless agreed otherwise in writing, the term of this Agreement shall be 1 month from the date the Software is downloaded by the User. User shall not distribute, disclose, market, rent, lease or transfer the Software to any third party. Oasys reserves all rights in the Software not expressly granted to the User in this Agreement.

 

TERM AND TERMINATION: Evaluation of the Software shall commence upon the date the Software is downloaded by the User and will terminate on the expiry of the term of this Agreement as detailed above (termed “Trial Licence Period”). If User does not purchase the Software prior to the expiration of the Trial Licence Period this Agreement expires automatically and User shall immediately destroy all copies of the Software, including all media and manuals received with the evaluation copy. PLEASE NOTE: If User thereafter licenses the Software, all terms and conditions of Oasys’ Software Licence Agreement, which is to be separately agreed between Oasys and User prior to User’s receipt of the Software, shall be in full force and effect and the terms and conditions of this Agreement shall be null and void.

 

COPYRIGHT AND CONFIDENTIALITY: User understands that the Software / FE Models remain the proprietary property of the Software / FE Model author(s) and are protected by the United Kingdom Copyright laws and the international treaty provisions. User agrees to protect the Software / FE Models with at least the same standard of care and procedures which User uses to protect its own proprietary information and in no event, less than a reasonable standard of care.

 

EXPORT CONTROL: User understands and acknowledges that the Software / FE Models is subject to the export administration regulations of the UK. Unless agreed otherwise in writing, the User shall not transfer the Software outside the United Kingdom.

 

WARRANTY: Oasys warrants that the Livermore Software Technology Corporation (LSTC) is the owner of the LS-DYNA Software and that Oasys Ltd is the owner of the Oasys Suite of Software programs and FE Models.  Oasys Ltd shall indemnify and defend User against any and all claims that the Software infringes on any U.S. patent or copyright or violates any other proprietary of a third party.

 

NO OTHER WARRANTY: User acknowledges that this licence is only for evaluation purposes and that the Software / FE Models are being provided to user “as is”. EXCEPT AS PROVIDED ABOVE OASYS DISCLAIMS ALL WARRANTIES, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OR MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. OASYS DOES NOT WARRANT THAT THE SOFTWARE WILL MEET USER’S REQUIREMENTS, OPERATE IN COMBINATIONS SELECTED BY USER, PRODUCE RESULTS DESIRED BY USER OR OPERATE WITHOUT INTERRUPTION OR ERROR FREE.

 

LIMITATION OF LIABILITY: OASYS SHALL NOT BE LIABLE FOR ANY LOSS OR DAMAGE THAT MAY ARISE IN CONNECTION WITH FURNISHING, PERFORMANCE OR USE BY USER OF THE SOFTWARE, INCLUDING, WITHOUT LIMITATION, ANY DIRECT, INDIRECT, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES OF ANY KIND.

 

MODIFICATION: Oasys reserves the right to modify and/or change any of the terms and conditions of this Agreement at any time and without prior notice. If Oasys materially modifies this Agreement it will make reasonable efforts to notify the User of the change. For example, Oasys may send a message to the User’s email address, or generate a pop-up or similar notification when the User accesses the Software for the first time after such material changes are made. By continuing to use the Software after Oasys has posted a modification of this Agreement, the User agrees to be bound by the modified Agreement. If the modified Agreement is not acceptable to the User, the User’s only recourse is to discontinue the use of and uninstall the Software. This Agreement will also govern any software upgrades and/or updates provided by Oasys that upgrade and/or supplement the Software, unless such upgrades and/or updates are accompanied by a separate licence, in which case the terms of that separate licence will apply.

 

ENTIRE AGREEMENT: This Agreement sets forth the entire agreement and understanding of the parties and supersedes all prior oral and written agreements and understandings relating thereto. This Agreement shall only become effective when the User indicates acceptance of its terms in any one of the manners prescribed above. This Agreement shall be subject to English law and any disputes referred to the English Courts.

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