A customized finite element tool developed for automotive industry




Occupant Modelling




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Virtual Proving Ground (VPG) module is a customized finite element tool developed for automotive industry. It is mainly used in the simulation of vehicle system level analysis, including the analysis of vehicle system fatigue life, nonlinear dynamic analysis of vehicle system, NVH analysis, collision safety and occupant protection

It is ETA's commonly used pre-processing and post-processing platform, which mainly use for security and structure.



The VPG/Structure module is a dynamic durability analysis environment, which provides abundant and standard model library required in the durability analysis of the system level, including the road model, tire model and suspension model. It is used in automobile body fatigue and life analysis, NVH analysis,and nonlinear dynamic analysis.

Road Surface Model

VPG/Structure provides abundant automobile proving ground virtual road to fulfil the vehicle performance simulation requirements, which facilitates the user to perform the durability and safety analyses of the automobile.

Meanwhile, it can be also used for nonlinear kinematical and dynamic calculations, and the studies for comfort, high-speed performance and handing stability of the full vehicle as well.

Road Surface Model

Provides common vehicle test site virtual road

Plank Road
Plank Road
Plank Road
Curb Road
Curb Road
Curb Road
Sine Road
Sine Road
Sine Road
Body Twist Road
Body Twist Road
Body Twist Road

Support the creation of various parametric pavements

Tire Models

Tires are the key components for transmitting road loads. Their response characteristics directly affect the correctness and accuracy of analytical solutions.

VPG has a range of true tire models, making it possible to construct realistic tire models. Strong technical guarantee. VPG tires have the following advantages:

  • 3-D finite element analysis model
  • modelled by airbag inflation model
  • Can define the contact between the tire and the road surface, and can consider friction
  • Can produce composite tires
  • Able to assembly tire and align tire
  • Tire Stiffness Test with adjust various stiffness of the tire: vertical stiffness, lateral stiffness, longitudinal stiffness, torsional stiffness
tire models tires
tire models stiffness

Suspension Models

PreSys suspension module uses a typical beam suspension model.

This is because the simple structure and quick solving characteristics of beam suspension have great advantages in the durability analysis of the whole vehicle, road loading prediction, NVH analysis of the whole vehicle, vehicle ride comfort and maneuverability and so on.

Provides four types of suspensions:

  • Macpherson A-Arm Front Suspension
  • Macpherson Rear Suspension
  • 5-Link Rear Suspension
  • Honda 5-Link Rear Suspension

User can determine the positional relations of the suspension as needed, including the locations for the stabilizer attach, ride spring type, jounce bumper and rebound bumper.

Besides, user can view and modify the related parameters including Hard Point, Part, Bushing and Spring.

suspension models type-1
suspension models type-2


VPG/Safety is a finite element tool developed on the PreSys platform for users in the automotive industry. It provides a series of high-quality dummy and safety barrier to speed the modelling of vehicle impact analyses. FMVSS, ECE and Insurance Institute impact & occupant safety test conditions can be implemented quickly and easily using the VPG/Safety.

Crash Tool Library

  • Dummy Models
    • SID and EUROSID dummy models (FTSS available)
    • Hybrid III dummy models (FTSS available)
    • LSTC/NCAC dummies
  • Barriers Models
    • FMVSS/ECE side impact barrier
    • degree front rigid barrier
    • 30-degree rigid front barrier
    • Front offset deformable barrier
    • Rear impact barrier
  • Impactors, rams, pendulums, head forms

Vehicle Safety Test

  • FMVSS regulations—side door intrusion, US dynamic, rigid wall 0 degree/30 degree, roof crush resistance, flat rigid wall rear impact, 70% overlap deformable barrier rear impact
  • ECE regulations—deformable 40% offset, frontal impact, rear impact, euro dynamic side impact)
  • Insurance/consumer requirements
  • Front rigid pole impact, side pole impact
  • IIHS 40% offset deformable barrier front crash
  • AMS (rigid 15 degree, ASD 50% overlap anti-sliding device)
  • Bumper impact FMVR581 (flat, offset, pendulum)
  • FMVSS—Free Motion Head Impact, Seatbelt Anchorage, Child Restraints anchorage system, sled test occupant simulation, knee bolster simulation, steering control system
  • ECE—luggage intrusion, steering control system
vehicle safety test

Airbag Folder

  • Provides six static folding methods
  • Fold pattern can be saved and bag re-folded with same fold pattern
airbag folder

Occupant Modelling

Dummy Positioning
dummy positioning

User can translate the dummy and rotate the dummy assembly


User can create the seatbelt model conveniently including the seatbelt ribbon, Slipring, Retractor and Sensor and so on.

Seat Foam Deformation
seat foam deformation

Simulate the seat squash conditions for the seat cushion and seat back when the driver sits on the seat.


The Drop Test Module (DTM) is a professional drop simulation finite element analysis software based on the explicit transient dynamic program LS-DYNA. It has powerful interactive modelling and automatic meshing technology, and is equipped with a dedicated drop parameter definition dialog box and a full-featured post processor.

With DTM, user can predict the impact of different materials on the product, through simulation analysis before the prototype production, as well as the performance of the product in various aspects such as drop and collision. Thus, it can therefore significantly decrease the development cycle, improve the capacity of research and development and decrease development expenses.

Available test condition

  • Drop test
    • Simulates the process when an electric product drops from a defined height to the rigid ground. User can easily create a series of simulations from a range of drop heights or impact angles. It allows the user to analyse the deformation and the force in each parts of the electric product.
  • Pressure test
    • Simulates the force result in the pressure which is loaded with the time
  • Vibration test
    • Simulate the response of the electric product in the different situation, for example, impact, shock or drop
  • Shock test
    • Simulate the response of the electric product in the different shocking frequency


The FSI module is a specialized module for computing military problems such as explosions. Its strong coupling of fluids and solids can be used for a wide range of explosions (underwater, airborne, building Material and soil), airbag deployment, tank liquid sloshing and other analysis.

Users can compare ALE and SPH numerical simulation work which automatically generate ALE grid, the definition of the size of explosives, location, and the mesh of the explosive unit.


  • Generate ALE mesh and adjust the contour dimension and mesh size of the model
  • Create ALE material property and ALE element property of the explosive source and the medium
  • Fluid-solid coupling and ALE algorithm control parameter
  • Allow user to create, delete or modify some keyword


  • Post-processing can directly read the analysis results, animating the analysis process
  • Direct display of the flow of various materials
  • Graph data processing allows for in-depth evaluation of data results


Mainly used to solve the ALE problem with the structured meshes to improve the solution efficiency. It can automatically generate structured meshes, so the user doesn’t need to mesh ALE and only need to provide the information of some control points in Preprocess.

For the large-scaled ALE problem, this processing mode can greatly reduce the size of K file thus to decrease the time of reading and writing the mesh data.

This module is ideal for the development of:

  • Automotive
  • Hydraulic engine mounts
  • Valves, pumps, compressors
  • Tire hydroplaning
  • Airbag deployment
  • Car door seals
  • Mine Blast
  • Vehicle Blast Countermeasure
  • Weapon Design
  • Fluid containers
  • Oil tanks subject to earthquake
  • Fuel tank sloshing
  • Biomechanics
  • Artificial lung
  • Gas turbines
  • Nuclear power plants
  • Dynamic analysis of dams
  • Other applications
  • Modelling tsunamis
  • Loud speakers, hearing aids,etc


The Die Structure Cooling (DSC) is mainly used to provide modelling for the temperature field analysis of the Die during the hot forming and processing processes based on the LD-DYNA environment.

It supports the creation of a temperature field analysis model of the die containing the cooling channels during the stamping process. Users can use this module to set material thermal parameters, contact thermal parameters, time of each phase and number of stamping cycles.

Users can view and export results such as the temperature variation curve of the three tools (die, punch or binder), temperature contour, and die equilibrium temperature through simulation.

die temperature curve

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