|
|||||
|
|
A frequency and velocity-dependent impedance method for prediction of rail/foundation dynamics |
|
| Authors: | Fadi Hage Chehade Isam Shahrour Marwan Sadek Reda Mezeh |
| Affiliation: | Laboratory of Civil Engineering and GeoEnvironment, University of Lille, Sciences and Technologies, Polytech'Lille,Villeneuve d'Ascq, Hauts-de-France 59655, France;Doctoral School of Science and Technology, Lebanese University, Beirut 0000, Lebanon;Doctoral School of Science and Technology, Lebanese University, Beirut 0000, Lebanon;Laboratory of Civil Engineering and GeoEnvironment, University of Lille, Sciences and Technologies, Polytech'Lille,Villeneuve d'Ascq, Hauts-de-France 59655, France |
| Abstract: | This paper presents an efficient numerical tool for the prediction of railway dynamic response. A behavior calibration of the infinite Euler-Bernoulli beam resting on continuous viscoelastic foundation is proposed. Constitutive laws of the discrete elements are determined for a rectilinear ballasted track. A three-dimensional model coupled with an adaptive meshing scheme is employed to calibrate the beam model impedances by finding the similarity between the output signals using the genetic algorithm. The model shows an important performance with significant reduction in computational effort. This study emphasizes the major impact of the excitation characteristics on the parameters of the discrete models. |
| Keywords: | |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ | |