Eventos Anais de eventos
MecSol 2017
6th International Symposium on Solid Mechanics
A FINITE ELEMENT METHOD FOR MODELING VEHICLE-TRACK-BRIDGE INTERACTION UNDER MOVING LOADS
Submission Author:
Juliana Pereira Rego Remor , PR
Co-Authors:
Fernando Beghetto, João Elias Abdalla Filho
Presenter: Juliana Pereira Rego Remor
doi://10.26678/ABCM.MecSol2017.MSL17-0137
Abstract
A finite element method is applied to analyze the dynamic responses of railway track and bridge under moving loads. The vehicle is a 9 degree-of-freedom model composed of an association of rigid bodies connected via suspension systems. The dynamic responses of the vehicle are obtained due to the speed and tracks irregularities, which are considered as harmonic sinusoidal functions. After that, the vehicle wheel forces are applied on the railway track-bridge model. The dynamic behavior of the railway track-bridge model is studied integrating the rail, ballast, and bridge. The rails are modeled as an elastic Euler-Bernoulli upper beam and the bridge as an Euler-Bernoulli lower beam. The sleepers and ballast are modeled using Winkler foundation for translation. The Rayleigh method is used to define structural damping. The equations of motion of both systems are integrated using Newmark’s method. Ballast influence is analyzed.
Keywords
Finite Element Analysis, structural dynamics, Vehicle-Track-Bridge Interaction, Railways
