Dynamics simulation for vehicle homologation

Dynamics simulation for vehicle homologation

Streamline your vehicle approval route

When approving new and modified vehicles, or extending the operational parameters of existing rolling stock, the approval process for running dynamics is often expensive, rigid, and time consuming. This is because the acceptance process traditionally involves on-track testing, and the required level of train Instrumentation is complex. Gaining permission to access track can be difficult, as a non-homologated vehicle is used, and tests also often involve unusual behaviour, such as running without a functioning signalling system or exceeding permitted line speeds.

For rolling stock suppliers, this costly and inefficient vehicle approval process represents an immense risk. If the vehicle fails tests, the time and cost associated with re-engineering and retesting the vehicle can be significant.

For operators of approved vehicles, this complexity and cost is a significant barrier to attempting to increase the permitted speed, axle load, or cant deficiencies of their fleet, meaning that potential operational gains are never realised.

How can your approval process be optimised by dynamics simulation?

Simulations can be used as the cornerstone of the homologation process. 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. While for manufacturers, simulations enable the early identification of safety and technical issues, helping to minimise project delays and technical issues throughout the entire approval process.

How can we help you?

TÜV SÜD understands the commercial pressures of both rolling stock suppliers and vehicle operators, and has specialist railway test laboratories fully accredited to EN17025. We have therefore developed a new Approach to the vehicle acceptance process, which reduces the total cost, increases flexibility, shortens project timelines, and reduces project risks. By using cutting-edge vehicle dynamics simulations, TÜV SÜD can significantly reduce, or in some cases completely eliminate, the need for on-track vehicle testing.

Our simulation for homologation services

The current technical specification for interoperability relating to rolling stock, for both locomotives and passenger vehicles (LOC & PAS TSI), and the newly published EN 14363:2016, create new opportunities for 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 “virtual” EN14363 test regime, to determine whether the running characteristics of the vehicle are satisfactory. 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.

TÜV SÜD is able to offer a complete turnkey solution, delivering 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. Alternatively, we can use adequate test data which already exists to validate the vehicle model. Finally, as an independent party with the relevant expertise, we are also able to provide an independent assessment of your own simulations, minimising the risk of costly approval delays.

Why choose TÜV SÜD?

TÜV SÜD’s unique combination of Vehicle dynamics simulation expertise, extensive knowledge about relevant regulations and a fully EN17025 accredited railway test laboratory, enables us to develop the right vehicle homologation strategy for you. As a NoBo, AsBo, DeBo and ISA, we can support you along the entire approval process, from project conception to the final signed certificate, as well as offering an independent third-party check of your own simulations.


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