STRUCTURAL ANALYSIS OF RAILWAY ROLLING STOCK INCORPORATING SUSPENSION SYSTEM

CADE normally uses the Finite Element Method (FEM) to undertake simulation modelling and analysis of complex structural elements. This method is often used to analyse critical elements and mechanical parts, whose performance may be conditioned by other mechanical elements or systems.

In the structural analysis of railway rolling stock, specifically in frame structures of vehicles, the consideration of suspension systems (bogies) in its Finite Element Analysis becomes highly relevant: it allows to characterise (in the most realistic way possible) the bogie rigidity transmitted to the frame structure, according to the requirements of the standard “UNE-EN 12663 (2014) Structural requirements of railway vehicle bodies”.

The difference between the consideration or not consideration of the suspension system in the finite element analysis can be easily quantified. The results can be compared by analyzing the simulation of a multi-axle railway frame, applying the finite element method and using ANSYS software. For this purpose, two calculation models must be compared:

• Model implementing the suspension system.
• Model without implementation of the suspension system.