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VPG stands for Virtual Proving Ground, which is a vertical application that can function as a standalone in the all-new VPGSuite or can be used as a plug-in with other preprocessing tools to setup proving ground simulations. VPGSuite allows users to quickly replicate real life, proving ground simulations in a virtual environment. This can involve crash and safety-related (standards/regulatory, occupant safety – positioning, seat belt, and pedestrian protection) or structure reliability-related (suspension, chassis, steering, vehicle dynamics, and durability). VPGSuite assists engineers with understanding true system performance under various testing conditions, providing early system-level design validation.
LS-DYNA is the default solver behind VPGSuite. The collaboration allows VPGSuite to become a robust tool that simulates various testing scenarios and drives the design based on the test results. Additional developments are underway to allow users to simulate proving ground simulations using other commercial codes such as Abaqus.
- VPGSuite provides a simple way to edit and understand LS-DYNA with the ability to check the input file.
- Supplies users with the flexibility to use the ‘unique’ LS-DYNA model for a crash, safety, ride/handling, and road load test.
- Incorporates the multi-physics capabilities of LS-DYNA to simulate ‘real world’ physics issues related to wind turbines, solar panel structures, and aircraft matters.
VPGSuite – Safety Modules
The VPGSuite Safety Module offers users the ability to set up different crash/occupant safety-related simulations per various standards (FMVSS, ECE, etc.) in a rapid and efficient manner. The safety simulations can either be a typical crash (front, side, rear) or a newly incorporated pedestrian protection or an occupant safety simulation using a dummy. VPGSuite also offers users a library of standard and calibrated barriers for various tests, along with calibrated and correlated dummy models.
Below is the list of sub-modules.
Crash Standards Regulations Module allows users to set up crash simulations as shown in the video above – The automated GUI requires the least amount of input from the user. And users can choose from various standards such as FMVSS, ECE, CNCAP, and JNACP, etc. VPGSuite also provides an extensive library of dummy and barriers at no additional cost.
Pedestrian Protection (PedPro) Module is the key to safety simulations. PedPro has been incorporated in Europe and China, and will soon be enforced in the US. The PedPro module assists users with the setup of a particular simulation, quickly with few inputs. VPGSuite can even run the analysis in batch mode and automatically post-process the results and generate a report.
Airbag Module is imperative since airbags are one of the most important safety devices for protecting occupant injury. The deployment of an airbag depends on how its folded. The proper folding and unfolding become a critical part of a simulation. The airbag module allows users to set up folding and unfolding using LS-Dyna.
VPGSuite – Structure Modules
The Structure Module allows users to quickly build and test virtual prototypes of full vehicle/subsystems and setup tests under various road conditions similar to being in a test lab or on a test track. In addition, no physical prototype is required, it’s a fraction of the cost to test, and the ability to perform design studies using various parameters or components takes minimal effort. The Structure Module is divided into three significant sub-modules, as listed below. The structure module comes with a library of standard road surfaces used on a variety of test tracks. Also, the user gets access to a parametric 3D finite element tire model to mimic a ‘real world’ test as closely as possible.
The Tire/Road Module helps users create a tire model of standard sizes for automotive applications. The user can set up standard tire tests for calibration to generate the correct forces and moments at the tire patch and at the spindle. The module allows access to standard test road surfaces from proving grounds around the world.
Stick Model Module – Chassis/Suspension Rigid Body Simulation is a sub-module that serves as the basic foundation for the other modules of VPGSuite/Structure. The user has access to a library of standard suspension models or can create their own models to add to the library. This module deals with rigid body kinematics for quick simulation time and provides details for different test results. A calibrated suspension and tire can generate credible results for the initial design study. Key features include:
Hybrid Model Module – Deformable Chassis/ Suspension simulation is a sub-module for an intermediate level of study. The user can study a model with few deformable suspension or chassis components and review the particular components. Module features include:
- A study of the compliance effect on suspension components
- An analysis of stresses and strains on certain components
Full Vehicle System Module – Full Vehicle Deformable System is the highest level of VPGSuite/Structure. This module allows the user to bring in a fully deformable body model combined with rigid or deformable suspension from previous studies and set up a road test. Module Features include:
- A study of stresses/strains of the deformable components.
- The ability to identify weak spots early in the product development stage