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Dynamic simulations with LS-DYNA

LS-DYNA from LSTC the editor, is the ideal solution for your dynamic FEM simulations. LS-DYNA will allow you to study the behavior of your mechanisms when they undergo time-dependent loads. You can use LS-DYNA in stand-alone version or integrated into ANSYS Workbench. CADFEM working closely with the developers of LS-DYNA for decades and you benefit from our experience in this type of calculation

LS-DYNA and ANSYS Workbench

The seamless integration of LS-DYNA in ANSYS Workbench with the associated CAD connectivity provides explicit calculations in a parametric work process and accelerates both the variant calculation and the optimization.

Front crash simulation for a Toyota Yaris hitting a deformable barrier in accordance with EU frontal impact regulation ECE R94 (source: National Crash Analysis Center (NCAC) of The George Washington University).

 

Automobile Industry

The LS-DYNA platform is the ultimate crash simulation tool. This tool is used to study the behavior of vehicles and their components as well that of the occupants during an accident involving, for example, a car, truck, boat or an aircraft. The automobile industry is one of the largest users of this technology. In addition to analyzing complete vehicle crashes, users are also able to concentrate on the detailed calculation of components for the purpose of active or passive safety of cars, passengers and pedestrians.

Crimping process between a connector and cable strands. Forming forces, plastification, and contact pressures are analyzed (with the kind permission of Tyco Electronics).

 

Metal forming

One of the advantages of LS-DYNA is its ability to simulate forging, dimpling and stamping processes. Furthermore, it analyzes processes in relation to roping or fissures, springback and surface finishes in order to define optimization starting points.

Calculation of a water-filled barrel drop. The liquid is described in a Eulerian space interacting with the barrel walls.

 

Drop calculation

Another classical LS-DYNA application field is the drop calculation. The various effects during impact are simulated. This could be used for a falling container, machine, watch, cell phone or even a falling liquid-filled container. In addition to significant savings in cost and time, LS-DYNA can analyze the dynamic details of an impact and quickly calculate variants in order to minimize the effects.

Spiral spring production: a steel wire fed by 4 rollers takes the form of a spiral. Kinetic change analysis during the different tool positions, material loads and tool wear.

 

Other examples

Beyond these cases already presented, LS-DYNA is effective for any simulation involving the dynamic behavior of contacts or materials all the way up to complex behaviors. LS-DYNA is perfect, for example, for processing calculations for explosions or seismic activity. These are used to find the structural strength of shielding (containment), for the purpose of determining the dimensions of turbines, transformers or other machinery housings.

Features

LS-DYNA features special functionalities for specific applications such as those used in the automotive sector (safety belt, airbag, form and seatbelt pretensioner functionalities) for metal forming (adaptive meshing, special contact formulation).

The use of explicit technology, extensive parallelization and outstanding robustness during complex operations work together to deliver quick solutions.

Real material behavior can be accurately defined with the help of the large library containing over 130 material models in addition to a range of applications such as plasticity, tearing, shear and strength.

Preparation of the model can be shortened by using specific application functionalities for seatbelt retractors and airbags.

The strongest deformations and distortions can be mapped thanks to new simulation techniques such as no mesh methods, for example; Smooth Particle Hydrodynamics (SPH) or the Element Free Galerkin Method (EFG).

Your control process simulation gains greater flexibility thanks to additional tools such as LS-PREPOST, LS-OPT, and the ASCII format input and output options.

The seamless integration of the ANSYS Workbench with the enterprise CAD software allows for explicit calculations in a parametric workflow and increases the speed of the variant calculation and optimization.

The intuitive interface leads to rapid adoption.

Your start in the world of simulation

Your start in the world of simulation

  • Introduce simulation safely
  • 4 steps to be operational
  • Accompaniment throughout the process
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