Rigorous vehicle-soil-track simulation of high-speed rail through optimization-based model order reduction

Dynamic Sustainable Processes Simulation to Study Transport Object Efficiency

“…The problem was that there was no tool for analytical modeling of physical processes inside the objects of simulation in time. Understanding that power effects in objects are transmitted by waves can be seen in many works, for instance, to identify the acoustic signature of railway vehicles [119], for simulating the vehicle-soil-track interaction phenomenon [120], to investigate the properties of elastic waves propagating in the periodic ballasted track [121], for improving the time-frequency representation for signals dedicated to structural diagnostics [122], for the application of embedded track in metro systems [123], to study the effects of wheel-rail impacts on the fatigue damage of the fastening clips at the rail joints of a high-speed railway [124], for evaluating the reliability of the dynamic performance of the vehicle [125], for the prediction of the influences of rail irregularities on the wheel/rail dynamic force [126], for studying the cause of train-induced ground vibration [127], for investigating issue of predictive maintenance by detecting possible structural failure or defects the third rail [128], to assess derailment risks [129], for simulation studies of the oscillatory behavior of road and rail vehicles [130], for advanced remote condition monitoring of railway infrastructure and rolling stock [131], for random-vibration-based on-board railway vehicle and track monitoring [132]. However, the provisions of the elastic wave theory have not been used to analytically describe the propagation of dynamic processes in space and time.…”

Seismic fragility analysis of railway reinforced concrete bridges considering real‐time vehicle‐bridge interaction with the aid of co‐simulation techniques

“…Furthermore, the track (ballasted or non-ballast) and track slab modeling are also considered critical issues related to several nonlinearities (wheel-rail contact, suspension elements, etc.). 14 In the frame of VBI modeling, track irregularities are the most important excitation source. The simulation of irregularities follows the spectral representation method, described by power spectral density (PSD) functions of the track geometry quality.…”

“…Furthermore, the track (ballasted or non‐ballast) and track slab modeling are also considered critical issues related to several nonlinearities (wheel‐rail contact, suspension elements, etc.) 14 . In the frame of VBI modeling, track irregularities are the most important excitation source.…”

Application of expanded polystyrene (eps) geofoam for the mitigation of dynamic vibrations and distress of civil infrastructure

“…More specifically, receptance could be a first fast and relatively easy measurement in order to estimate the track behavior, although the knowledge of the vehicle/track interaction and of the force acting on the track should also be investigated. On a realistic track model, receptance could be used in order to detail the relation between peaks visible in receptance curves and propagating waves in the track (Lesgidis et al, 2020).…”