Dynamics simulation for rolling stock homologation

Dynamics simulation is a form of virtual testing that evaluates the performance of trains under various operational scenarios, following the current technical specification for interoperability relating to rolling stock. This creates new opportunities for rail vehicle dynamics computer simulations to complement or replace on-track testing. 

When using this method, the vehicle dynamics model is validated using test results. This validated model is run through a EN 14363 test regime, to determine whether the running characteristics of the vehicle are satisfactory.

A trusted third-party such as TÜV SÜD can help you with dynamics simulation. TÜV SÜD’s exact approach will be tailored to meet specific project needs, according to the technical parameters and the level of available in-house knowledge.

When approving new and modified vehicles, or extending the operational parameters of existing rolling stock, the approval process for rail vehicle dynamics is often expensive, rigid, and time consuming. Dynamics simulations can serve as the cornerstone of the homologation process and can be combined with on-track testing to assess unusual behaviors, such as operating without a functioning signaling system or exceeding permitted line speeds.

For operators, this approach allows you to quickly and efficiently identify whether anticipated operational gains, such as the reduction of journey times or increasing payload, are indeed achievable.

For manufacturers, simulations enable the early identification of safety and technical issues, minimising risks by executing simulations under controlled conditions, which avoid unpredictable results and costly retests and delays.

TÜV SÜD employs advanced dynamics simulations combined with its expertise in rail regulations to offer efficient vehicle homologation strategies that reduce the need for physical testing, streamline project timelines, and ensure regulatory compliance.

We have extensive experience in simulating and testing rail vehicle dynamics. Our experts have in-depth knowledge of both current and emerging rail standards.

With EN 17025 accredited railway test laboratories for credible and recognised testing, we provide a comprehensive range of rail vehicles and component testing services.

We have a proven track record of reducing project timelines and costs through effective simulation strategies.

We test and certify according to the current technical specifications for interoperability relating to rolling stock vehicles. This includes both locomotives and passenger vehicles (LOC & PAS TSI), and EN 14363:2016. This creates new opportunities for vehicle dynamics computer simulations to complement or reduce on-track testing.

When we use this method, we validate the vehicle dynamics model using test results. We run this validated model through a virtual EN14363 test regime to determine whether the running characteristics of the vehicle are satisfactory. We will tailor our exact approach to meet specific project needs, according to the technical parameters and the level of in-house knowledge.

We offer not only simulation and testing services but also any required Notified Body (NoBo), Assessment Body (AsBo), Designated Body (DeBo) or ISA (Independent Safety Assessor) services. In some cases we can use adequate test data which already exists to validate the vehicle model.

Finally, as an independent party with the relevant expertise, we can also provide an independent assessment of your own simulations. This can help build confidence in assessors reviewing the vehicle, helping you to minimise the risk of costly delays.