Using VI-Rail, the specialized railway simulation software from VI-grade, you can quickly build a complete, parameterized model of a new railway vehicle, easily define its suspension, wheelset, wheel-rail contact, and other vital characteristics. Running through a battery of simulations it is possible to determine the vehicle stability, derailment safety clearance, track load, passenger comfort, and more. The performance of a railway vehicle design can be optimized virtually in the computer, before cutting a single piece of metal or running a single physical test.
Simulation gives users immediate answers to their engineering questions. They quickly see and understand how any kind of design change will affect vehicle performance. VI-Rail is built upon the MSC Software product MSC Adams, widely recognized as the world’s leading mechanical system simulation tool.
VI-Rail users can instantly see the effects of design changes on railcar performance in high-speed animation. They can easily detect component interferences, excessive wear, instability, and performance limitations. Users can also plot key parameters in graphs to compare results from different designs.

  • Dynamic simulation of wheel-rail contact
  • Suspension design
  • Wear prediction
  • Coupler design
  • Bogie analysis (passenger and freight)
  • Track loads prediction
  • Design and simulation of auxiliary equipment
  • Event reconstruction
  • Switch crossing
  • Stability analysis
  • Comfort prediction
  • Vehicle-infrastructure interaction
  • Quickly build, test, and refine railcar designs, exploring many “what-if” alternatives. A user can, for example, change springs with only a few mouse clicks, instead of having to wait for a mechanic to install new springs, as required with physical testing
  • Easily vary the kinds of analyses being performed. With simulation, there’s no need to modify physical instrumentation, test fixtures, and test procedures
  • Work in a secure testing environment, without fear of losing critical data to instrument failure
  • Stationary tests for vehicle acceptance implemented according to EN14363:2005
  • On-track tests for vehicle acceptance implemented according to EN14363:2005
  • Added equivalent conicity evaluation according to Klingel formula (UIC519)
  • Introduced a user friendly dialog to easily compute track base starting from a trk file or from user input gauge/profile data
  • Profile viewer now supports wheel profile file (*.wpr, *.wpf)
  • Automatic postprocessing for vehicle acceptance analysis according to EN14363:2005
  • Enhanced sliding value computation (including sliding mean, sliding max, sliding mean, coupled with predefined or user defined filters)
  • Enhancement and bug fixing for the toolkit dedicated to modeling, analyzing and postprocessing of freight vehicles according to AAR Chapter XI
  • Enhanced shear spring model has been enhanced
  • C++ solver is now the default in VI-Rail
  • Results file is the new default format for VI-Rail
  • Added possibility to run the vehicle with negative initial velocity, allowing to better analyze asymmetric vehicles
  • Preload analysis reviewed to avoid long simulation/processing time on model with bushing elements
  • RSGEO input dialog box enhanced; added visualization of contact point on wheel/rail profile using colored lines.
  • Several tutorial enhancements
  • Added evaluation of instability criterion (EN14363)
  • VI-Rail Freight Toolkit: added load sensitive friction wedge, updated friction force definition, producing non-zero frictional force when normal force is null
  • VI-Rail Wear and Stress: added support for variable profile (allows to evaluate wear differently on different sections of track), enabled possibility to cumulate wear on multiple wheels with same profile
  • VI-Flextrack: added the possibility to generate flexible track with generic infrastructure, as an alternative to the ballasted track already available
  • Enhanced Comfort toolkit, with updated index computation according to most recent regulations (EN 12299:2009, ISO 2631-1:1997, UIC 518) as well as automatic postprocessing and report generation