Simulation testing and analytical calculations of rail vehicles

We carry out simulation tests and analytical calculations of rail vehicles regarding structural strength, thermomechanics, vehicle motion dynamics and determination of gauge outline. We prepare expert opinions and technical reports to identify the causes of structural damage and unexpected operational events.

Structural calculations

static and fatigue strength
structural vibration analysis
structural stability analysis
support in the design of structures
analysis of bolted and welded connections (e.g. VDI 2230, DVS 1612, PN-EN 1993-1-8)

We perform structural strength calculations using the finite element method (FEM).

Analytical calculations

axles of wheelsets
determination of the gauge outline
calculation of the strength of coil springs
determination of traction characteristics of vehicles, estimation of energy consumption and performance of theoretical runs

Carried out on the basis of PN-EN 13103-1, PN-EN 15273-1, PN-EN 13298, PN-EN 13906.

Testing of vehicle motion dynamics

Simulations of the dynamic behaviour of rail vehicles and technical equipment:

safety analysis against derailment on twisted track,
safety analysis against derailment due to longitudinal compressive forces on S-shaped curves,
analysis of displacement characteristics (sway),
evaluation of the dynamic behaviour on rail routes (running safety, track loading, running smoothness),
analysis of passenger comfort,
stability tests for railway vehicles using linearisation and limit cycle methods,
selection of springing,
simulations of the dynamic behaviour of machines,
analysis of the behaviour of bulk materials by Finite Element Discretisation.

Crash analyses

testing of passive safety of structures,
crash analyses,
assessment of the deformation course of structures,
determination of accelerations occurring in the course of an event,
development of a test programme for validation tests.

For rail vehicles, passive safety tests are carried out for crash scenarios according to EN 15227.

Thermomechanical analyses

analysis of thermal conductivity,
calculation of thermal capacity and thermal stress of wheels and brake discs,
calculation of braking performance.

Aerodynamic simulations

determination of resistance to motion,
assessment of crosswind effects on the vehicle,
passenger safety on the platform,
fluid flows in cooling systems

The tests for rail vehicles are carried out in accordance with EN 14067.

Technical expertise and expert opinions

identification of causes of accidents (derailments of railway vehicles, damage to railway vehicles and railway infrastructure)
identification of factors causing undesirable operational incidents
proposal of remedial measures to eliminate risk factors and improve safety