3110 試験装置とコンピュータシミュレーションによる軌道と車両のダイナミクスに関する研究(SS1-2 高速化と走行性能1,SS1 高度化,高速化,J-Rail 2006)

概要

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It is important for studying vehicle-track dynamic interactions to make clear characteristics of many physical and/or structural parameters of the track. However, it is difficult to estimate them with accuracy only through measurements under the real train load on site. In this paper, we describe an approach using two tools of an experimental facility and a computer simulation. The Track and Structural Dynamics Simulator (TRADYS) is a unique mechanical vibration exciter equipped with hydraulic actuator between a train and a track. The train has the same masses and suspensions as the latest Japanese high speed railway vehicle. We can control at will the vertical relative displacements between rails and wheels through the directions inputted to the actuator. These relative displacements are considered to be simulating a railway track irregularity. In the experiments dynamic wheel load, displacements and accelerations of each part of track are measured as output. In addition to experiments a computer simulation was carried out. A theoretical model for this special experimental facility including the actuator was constructed. In this paper measured physical values and computed solutions are compared and the accuracy of the parameter values of the track structure components is discussed.
一般社団法人日本機械学会の論文
2006-12-13