Listar por tema "Resonance"
Mostrando ítems 1-12 de 12
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An equivalent additional damping approach to assess vehicle-bridge interaction for train-induced vibration of short-span railway bridges.
Elsevier (2019-06-01)Constant moving load models are widely adopted in the dynamic analysis of railway bridges under moving trains. However, the use of this simple model may overestimate the resonant response of simply supported bridges if the ... -
Analysis of the influence of the ballast track in the dynamic behaviour of single-track railway bridges of different typologies
Universitat Politècnica de València (2021)Short-to-medium span simply-supported (SS) railway bridges are prone to experience high levels of vertical acceleration due to train passage. The necessity of predicting accurately their dynamic behaviour for design, ... -
Dynamic performance of existing double track railway bridges at resonance with the increase of the operational line speed
Elsevier (2017)This article addresses the dynamic behaviour of double track simply supported bridges of short to medium span lengths (10 m < L < 25 m) belonging to conventional railway lines. These structures are susceptible to experience ... -
Dynamic performance of existing double track railway bridges at resonance with the increase of the operational line speed
Elsevier (2017-02-01)This article addresses the dynamic behaviour of double track simply supported bridges of short to medium span lengths (10 m < L < 25 m) belonging to conventional railway lines. These structures are susceptible to experience ... -
Effect of soil properties on the dynamic response of simply-supported bridges under railway traffic through coupled boundary element-finite element analyses
Elsevier (2018-09-01)Railway induced vibrations on short-to-medium span simply-supported (SS) bridges is addressed in this contribution. Such structures may experience high levels of vertical acceleration at the platform, leading to adverse ... -
Influence of the vehicle model on the prediction of the maximum bending response of simply-supported bridges under high-speed railway traffic
Elsevier (2014-08)This investigation intends to contribute to the problem of train-bridge interaction in high-speed railway lines. For design purposes, most often a numerical model based on constant moving loads is used to reproduce the ... -
On the basic phenomenon of soil-structure interaction on the free vibration response of beams : Application to railway brigdes
Elsevier (2016-10)The dynamic transverse response of beam type bridges under railway traffic is addressed in this contribution. In particular, how soil-structure interaction may affect the critical or resonant velocities and the associated ... -
Resonance and cancellation phenomena in two-span continuous beams and its application to railway bridges
Elsevier (2020-11-01)The objective of this study is to evaluate the vibratory response of two-span continuous beams subjected to moving loads and, in particular, to investigate the maximum resonance and cancellation of resonance phenomena. The ... -
Retrofit of existing railway bridges of short to medium spans for high-speed traffic using viscoelastic dampers
Elsevier (2012)This paper presents a study on the energy-absorbing capacities of viscoelastic dampers (VEDs) for reducing the resonant vibrations of simply supported high-speed railway bridges of short to medium span. The proposed solution ... -
Study of resonances in 1x25kV AC traction systems
(2015)Abstract: AC traction systems are 1x25 or 2x25 kV 50 Hz single-phase, non-linear, time-varying loads that can cause power quality problems. One of the main concerns about these systems is voltage distortion because ... -
Symmetry-induced hole-spin mixing in quantum dot molecules
American Physical Society (2015)We investigate theoretically the spin purity of single holes confined in vertically coupled GaAs/AlGaAs quantum dots (QDs) under longitudinal magnetic fields. A unique behavior is observed for triangular QDs, by which ... -
Two FE models to analyse the dynamic response of short span simply-supported oblique high-speed railway bridges: Comparison and experimental validation
Elsevier (2018-07-15)In this paper the dynamic response of a particular type of high-speed railway bridge common in the Spanish railway system is analysed with the aim of evaluating the levels of vertical vibrations experienced at the platform. ...