ABSTRCT: Elastic bearings have been used on simply supported bridges on high-speed railway in Taiwan to isolate train-induced vibration. However, their influence on dynamic behavior of the vehicle and bridge has not been fully investigated, and their vibration attenuation has not been quantificationally discussed. In this study, spring-damper elements with 12 degrees of freedom are established ...

We present the results of a dynamical analysis of three rich, X-ray luminous galaxy clusters, Abell 222, Abell 223 and Abell 520, that are at intermediate redshifts. Our study is based on radial velocities for 71 cluster members, respectively 30 for A 222, 20 for A 223 and 21 for A 520, measured from spectra obtained at the Canada-France-Hawaii Telescope, the European Southern Observatory, and ...

Abstract A new semi-analytical approach to analyze the dynamic response of railway bridges subjected high-speed trains is presented. The bridge modeled as an Euler–Bernoulli beam on viscoelastic supports that account for flexibility and damping underlying soil. track represented by bedding. Complex modal expansion models performed considering non-classical damping, coupling two subsystems achie...

Bridge Weigh-in-Motion systems can be used to estimate vehicle parameters such as velocity, axle loads, or the distance between axles without affecting the traffic. These parameters and the classification of vehicles are necessary to determine vehicle overload and hence may help to reduce risks for road users and road infrastructure and allow optimized planning of maintenance work. The Bridge W...

In this study, active suspension control of the interaction between bridge can be modeled according to Euler-Bernoulli beam theory, and quarter car model with three degrees freedom is studied. The system consists a spring, damper, linear actuator. designed using classical PID self-tuning fuzzy (STFPID) reduce vehicle body's disruptive effects. To determine performance controllers, two different...

Previous work by the authors have shown that the acceleration response of a damaged beam subject to a constant moving load can be assumed to be made up of three components: ‘dynamic’, ‘static’ and ‘damage’. Therefore, appropriate filtering of the acceleration signal can be used to highlight the ‘damage’ component and quantify its severity. This paper builds on these findings to examine if the s...