We were glad to have Nicolò Zampieri and Matteo Magelli from the Politecnico di Torino present at our EuroMed SIMULIA Conference 2024, on June 11-12, 2024, in Milan, Italy. Their presentation was titled "A User Force Element to Include Longitudinal Train Dynamics Simulations in Simpack".

PDF Slides:

Abstract:

The present work shows the development of a specifically built user force element that can be included in any Simpack model to account for the effects of the train composition on the dynamic behavior of railway vehicles. The user force element is written as a FORTRAN90 routine and then compiled as a dynamic link library (DLL) so that it is available among the common Simpack force elements with the standard graphical user interface window. The force element solves the longitudinal train dynamics of a set of vehicles, providing the position and speed of each vehicle as dynamic states. In addition,, the user force element outputs the in-train forces and deflections on the vehicle connection system during the simulation. The new user force element is validated in the simulation scenarios of international benchmarking activity, and it ensures superior computational performances with respect to standard modeling strategies. The biggest benefit of the user force element is that it allows the efficient combine longitudinal train dynamics simulations and detailed multibody models of isolated vehicles/groups of vehicles, thus making it possible to assess the effect of the in-train forces on the wheel-rail contact forces and related running safety indexes within the same simulation environment.

About the Speakers:

Nicolò Zampieri is an Associate Professor at the Department of Mechanical and Aerospace Engineering of Politecnico di Torino. Nicolò was awarded his PhD in 2014 with a dissertation on "The Development of Monitoring Systems for Railway Applications". 
Nicolò's research interests include railway vehicle dynamics and monitoring, modeling of wheel-rail/roller contact, wear and RCF. His current research activity concerns the design of test benches for railway applications and the development of specific applications for railway vehicle monitoring. Nicolò is a co-author of more than 60 scientific publications.

Nicolò ZAMPIERI
Associate Professor, Politecnico di Torino

Matteo Magelli is a researcher at the Department of Mechanical and Aerospace Engineering (DIMEAS) at Politecnico di Torino, Italy. He achieved his PhD in 2023 with a thesis on numerical and experimental tools for the simulation of braking operations. Matteo's research activity concerns the numerical simulation of several phenomena related to railway vehicle dynamics (wear, wheel-shoe thermal behavior in tread braking operations, running safety and stability, etc.) with longitudinal train dynamics and multibody codes as well as the experimental investigation of wheel-rail adhesion phenomena with laboratory test rigs. He is a co-author of more than 20 scientific works.

Matteo MAGELLI
Researcher, Politecnico di Torino

More content from the EuroMed SIMULIA Conference 2024 can be found here: