Print Email Facebook Twitter Dynamic amplification in a periodic structure with a transition zone subject to a moving load Title Dynamic amplification in a periodic structure with a transition zone subject to a moving load: Three different phenomena Author Faragau, Andrei B. (TU Delft Dynamics of Structures) de Oliveira Barbosa, J.M. (TU Delft Mechanics and Physics of Structures) Metrikine, A. (TU Delft Offshore Engineering; TU Delft Engineering Structures) van Dalen, K.N. (TU Delft Dynamics of Structures) Department Engineering Structures Date 2022 Abstract The study of periodic systems under the action of moving loads is of high practical importance in railway, road, and bridge engineering, among others. Even though plenty of studies focus on periodic systems, few of them are dedicated to the influence of a local inhomogeneous region, a so-called transition zone, on the dynamic response. In railway engineering, these transition zones are prone to significant degradation, leading to more maintenance requirements than the rest of the structure. This study aims to identify and investigate phenomena that arise due to the combination of periodicity and local inhomogeneity in a system acted upon by a moving load. To study such phenomena in their purest form, a one-dimensional model is formulated consisting of a constant moving load acting on an infinite string periodically supported by discrete springs and dashpots, with a finite domain in which the stiffness and damping of the supports is larger than for the rest of the infinite domain; this model is representative of a catenary system (overhead wires in railway tracks). The identified phenomena can be considered as additional constraints for the design parameters at transition zones such that dynamic amplifications are avoided. Subject moving loadPeriodic structuretransition radiationwave interference To reference this document use: http://resolver.tudelft.nl/uuid:fd423459-46f0-4f01-be45-ea5382fe55e1 DOI https://doi.org/10.1177/10812865221094318 ISSN 1081-2865 Source Mathematics and Mechanics of Solids, 27 (9), 1740-1760 Part of collection Institutional Repository Document type journal article Rights © 2022 Andrei B. Faragau, J.M. de Oliveira Barbosa, A. Metrikine, K.N. van Dalen Files PDF 10812865221094318.pdf 2.41 MB Close viewer /islandora/object/uuid:fd423459-46f0-4f01-be45-ea5382fe55e1/datastream/OBJ/view