Two approaches of finite-element modeling of ballasted railway track

Chen Ming Kuo, Cheng Hao Huang

研究成果: Article同行評審

12 引文 斯高帕斯(Scopus)

摘要

Use of a ballast is still popular in railway engineering due to its resilience, relatively low noise, and convenience in construction and maintenance. The ballast layer was modeled with two modeling approaches in this study-continuous elastic solid and spring-connected elements. Two-dimensional finite element models were built. The parameters of ballast layers were correlated between two models to assure comparability. Three levels of vehicle moving speed were analyzed with the models. Significant differences of rail deflection and ballast were found in all speed levels. Vibration spectra were also compared to reveal the characteristics of different finite element models. It was found that the model with spring-connected discrete elements had higher characteristic frequency than the simple ballast model. Increasing speed may significantly increase rail deflections and ballast vibration levels and result in particles movements in the ballast layer. A thorough understanding of model characteristics and engineering problems is crucial to choose the most appropriate model.

原文English
頁(從 - 到)455-458
頁數4
期刊Journal of Geotechnical and Geoenvironmental Engineering
135
發行號3
DOIs
出版狀態Published - 2009

All Science Journal Classification (ASJC) codes

  • Geotechnical Engineering and Engineering Geology
  • Environmental Science(all)

指紋 深入研究「Two approaches of finite-element modeling of ballasted railway track」主題。共同形成了獨特的指紋。

引用此