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

• Type: Article in International Conference Proceedings Book
• Date: 2011

Authors

Alves Costa, AA (Author) Other; Rui Calçada (Author) FEUP; Silva Cardoso, AS (Author) Other

Conference proceedings International

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

Pages: 804-811

8th International Conference on Structural Dynamics (EURODYN)

Leuven, BELGIUM, JUL 04-06, 2011

Indexing

ISI Web of Knowledge - 4 Citations

Scopus - 11 Citations

Scientific classification

FOS: Engineering and technology > Civil engineering

Other information

Authenticus ID: 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.

Language: English

Type (Professor's evaluation): Scientific

No. of pages: 8