Vibrations induced by railway traffic: influence of the mechanical properties of the train on the dynamic excitation mechanism

• Tipo: Artigo em Livro de Atas de Conferência Internacional
• Data: 2011

Autores

Alves Costa, AA (Autor) Outra; Rui Calçada (Autor) FEUP; Silva Cardoso, AS (Autor) Outra

Ata de Conferência Internacional

Título: PROCEEDINGS OF THE 8TH INTERNATIONAL CONFERENCE ON STRUCTURAL DYNAMICS, EURODYN 2011

Páginas: 804-811

8th International Conference on Structural Dynamics (EURODYN)

Leuven, BELGIUM, JUL 04-06, 2011

Indexação

ISI Web of Knowledge - 4 Citações

Scopus - 11 Citações

Classificação Científica

FOS: Ciências da engenharia e tecnologias > Engenharia civil

Outras Informações

ID Authenticus: P-00M-76P

Abstract (EN): The interest of scientific and technical communities on the dynamic effects induced by railway traffic is increasing over the last years. Nowadays it is well known that the train excitation can be divided into two mechanisms: i) quasistatic mechanism; ii) dynamic mechanism In this context, the simulation of the quasi-static excitation mechanism is trivial, since the train can be replaced by equivalent loads applied on the track. However, the same statement cannot be generalized for the dynamic excitation mechanism, where the mechanical simulation of the coupled train-track system is required. This paper presents a study developed in order to identify the influence and relevance of the mechanical properties of the train in the prediction of vibrations induced by high-speed railway traffic. Based on experimental data and numerical simulation, a discussion about the influence of the modeling strategy adopted for the train simulation is performed. A special emphasis is dedicated to the study of the influence of the unsprung and semi-sprung masses of the train on the train-track interaction mechanism. From the developed study it was found that the modeling strategy adopted for the train simulation is an important aspect mainly for the prediction of the free-field vibrations. Moreover, the accuracy of the prediction is considerably increased if the train simulation attends to the unsprung and semi-sprung ( bogies) masses of the train.

Idioma: Inglês

Tipo (Avaliação Docente): Científica

Nº de páginas: 8