Eventos Anais de eventos
COBEM 2023
27th International Congress of Mechanical Engineering
Study Of The Elastic Behavior Of The Secondary Suspension Spring Set in The Y32 Bogie Utilized in Vale Passenger Car
Submission Author:
Victor Hugo Garcia de Campos , SP
Co-Authors:
Victor Hugo Garcia de Campos, Ryan David Earl, Leonardo Bartalini Baruffaldi, Marco Bittencourt, Julismar Dadalto dos Santos
Presenter: Victor Hugo Garcia de Campos
doi://10.26678/ABCM.COBEM2023.COB2023-1490
Abstract
This work details a study about the elastic behavior of a railroad passenger car secondary suspension spring pack equipped on Y32 bogies, which are used on the Vitória to Minas and Carajás railroads. The referred spring pack is composed of a steel coil in parallel with two rubber springs assembled in series, yielding a non-linear stiffness behavior. It is known that the secondary suspension plays an important role on derailment indices and on wheel-rail wear, stressing the importance of reliable and realistic mechanical properties to simulate such phenomena. In this work, we develop a finite element model for the spring pack, using experimental data to calibrate the rubber components. This model is used to estimate the spring stiffness properties and to simulate the vehicle dynamical behavior using multibody dynamics. Results show that the non-linearities have considerable influence on the system response, suggesting that the use of rubber/steel coil springs on secondary suspensions deserve special attention.
Keywords
Railway vehicle suspension, Nonlinear stiffness, Finite Element Method, Rubber Spring, multibody dynamics
