LS-DYNA

LS-DYNA official version is a professional and practical finite element analysis simulation tool. The latest version of LS-DYNA can help users model and analyze production processes, simulate high-energy events, fluid-structure coupling analysis and thermal analysis, etc. LS-DYNA software is based on the Lagrange algorithm, with high reliability and accurate data, and is suitable for automotive, aerospace, construction, military industry and other fields.

LS-DYNA function introduction

Crashworthiness – For many automotive companies, LS-DYNA is a tool for understanding the deformation of complex systems such as vehicle structures. LS-DYNA's ability to simulate contacts and its extensive material models make it ideally suited for this type of analysis. It also includes features specific to many automotive applications, such as airbag, accelerometer and adhesive joint modeling.

​​Drop Testing – For years, LS-DYNA has been used to simulate impact events on everything from small electronics like cell phones and laptops to large nuclear fuel containers. Features include: fluid-structure coupling (ALE/ SPH) for simulating liquid-filled vessels Element Free Galerkin (EFG) for modeling cracks Explicit-implicit switching for studying steady-state deformation

Manufacturing Processes – LS-DYNA can be used to model and analyze manufacturing processes and evaluate proposed metal forming processes and tool designs. Users can simulate trimming and springback as the molding process progresses. Supported processes include:

​ ​ Explosions and high-speed impacts – LS-DYNA can be used to simulate high-energy events and is ideally suited for explosions. Air explosions can be simulated as well as buried explosive charges and blast loads on structures. Explosion methods include:

Composite Materials – Composite materials can be modeled in LS-DYNA using a combination of specialized material models and ply material angle data. Different material definitions and material angles can be specified by the thickness of the component, and ply failures can be included in the material definition.

LS-DYNA software features

1. The analysis functions of LS-DYNA include:

Complete 2D and 3D functionality

Nonlinear dynamics

Rigid body dynamics

Quasi-static simulation

Normal mode

Linear Statics

Thermal analysis

Fluid Analysis

Euler ability

ALE (arbitrary Lagrangian - Euler)

FSI (Fluid-Structure Interaction)

Navier-Stokes Liquid

Compressible Fluids Solver, CESE (Conservation Element and Solution Element)

FEM-rigid multi-body dynamics coupling (MADYMO, Cal3D)

Underwater impact

Failure analysis

Crack propagation

Real-time acoustics

Implied rebound

           Multiple physics coupling

Structure - Thermal Coupling

Adaptive remeshing

SPH (Smoothed Particle Hydrodynamics)

EFG (Element Free Galerkin)

Radiation transport

EM(Electromagnetism)

2. Material library

​ ​ LS-DYNA’s material library includes:

Metal

Plastic

glass

Bubble

Fabric

Elastomer

Honeycomb

Concrete and soil

Viscous fluid

User-defined materials

3. Element library

​​ LS-DYNA’s element library includes:

Beams (standard, truss, discrete, cable and weld) (more than 10 beam element recipes)

Discrete components (springs and dampers)

Concentrated inertia

Concentrated crowds

Accelerometer

Sensor

Seat belt

Preload

Hook

Slip ring

Shells (3, 4, 6 and 8 nodes, including 3D shells, membranes, 2D plane stress, plane strain and axisymmetric solids) (over 25 shell element recipes)

Solid (4-node and 10-node tetrahedron, 6-node pentahedron and 8-node hexahedron) (contains more than 20 solid element formulas)

SPH elements

Thick shell (8 nodes)

​ ​ 4. Contact Algorithm

The contact algorithms of LS-DYNA include:

Flexible body contact

​​​​Flexible body contact with rigid body

Rigid body in contact with rigid body

Side-to-side contact

Erosion Contact

                                Bundling surface

​ ​ CAD surface

Rigid walls

Drawing beads

Scope of application

LS-DYNA application scope

1. Aerospace

​​ LS-DYNA is widely used by the aerospace industry to simulate bird strikes, jet engine blade containment and structural failures.

Aerospace applications include:

Blade containment

Bird strikes (windshields and engine blades)

Failure analysis

2. Car crashworthiness and occupant safety

​ ​ LS-DYNA is widely used by the automotive industry to analyze vehicle design. LS-DYNA accurately predicts how a car will behave in a collision and the impact of a collision on the car's occupants. With LS-DYNA, automotive companies and their suppliers can test vehicle designs without the need for tools or experimental test prototypes, saving time and money.

LS-DYNA update log

​ ​ 1: Optimized performance

​ ​ 2: We are serious about solving bug problems