Dynamic Modal Analysis of a Passenger Bus: Theoretical and Numerical Studies

• Tipo: Artigo em Revista Científica Internacional
• Data: 2021

Autores

Lopes, R (Autor) Outra; Farahani, BV (Autor) Outra; de Melo, FQ (Autor) Outra; Ramos, NV (Autor) Outra; Moreira, PMGP (Autor) Outra

Revista

Título: Transportation Research Record: Journal of the Transportation Research Board

Vol. 2675

Páginas: 264-279

Editora: US National Research Council

Indexação

ISI Web of Knowledge - 0 Citações

Scopus - 0 Citações

Outras Informações

ID Authenticus: P-00V-D9C

DOI: 10.1177/03611981211028863

Abstract (EN): The dynamic assessment of a passenger bus is of the highest importance when aiming at high safety standards and low emissions for environmental sustainability. This work studies the dynamic response of a bus considering its modal analysis, for which simple dynamic models were developed for fast determination of the lowest frequencies, mainly arising from the suspension flexibility. In addition, complex natural vibration modes, impossible to determine using simplified models, were calculated via finite element method (FEM) modeling. To study the tire elastic behavior, as the key link between the vehicle and the road, specific deformation models, leading to a stiffness matrix to be combined with that of the vehicle spring suspension at each wheel/axis, were developed. This study aims at proposing a set of mathematical formulations to describe the modal behavior of passenger buses in detail, which could be applicable in any other long vehicle with similar conditions. Two main factors are studied, namely the suspension and the tire deformation effect. An acceptable agreement was verified between the simplified approach and FEM model results for the evaluation of natural frequencies and associated modes.

Idioma: Inglês

Tipo (Avaliação Docente): Científica

Nº de páginas: 17