Dynamic calibration of slab track models for railway applications using full-scale testing
Dynamic calibration of slab track models for railway applications using full-scale testing
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DOI：
10.1016/j.compstruc.2019.106180
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发表时间：
2020-02
影响因子：
4.7
通讯作者：
J. Sainz-Aja;J. Pombo;D. Tholken;I. Carrascal;J. A. Polanco;D. Ferreño;J. Casado;S. Diego;A. Pérez;J. E. A. Filho;A. Esen;T. M. Čebašek;O. Laghrouche;P. Woodward
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文献类型：
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作者：
J. Sainz-Aja;J. Pombo;D. Tholken;I. Carrascal;J. A. Polanco;D. Ferreño;J. Casado;S. Diego;A. Pérez;J. E. A. Filho;A. Esen;T. M. Čebašek;O. Laghrouche;P. Woodward
随着社会继续寻求具有成本效益和可持续的运输方式，铁路技术的研究和开发找到了新的动力。这要求工程师使用最先进的科学和工程技术进行机车车辆开发，并使用先进技术建造高性能，可靠和具有成本效益的铁路基础设施。这项工作的主要目标是开发详细的和验证的三维板轨道模型使用有限元公式，其中包括基础设施的所有组件。为此，计算模型的参数通过对扣件系统和板式轨道（包括其所有材料层）进行全尺寸试验来确定。本文提出的计算模型使用这种方法进行校准，并获得了良好的协议之间的实验和数值结果。这项工作开辟了良好的前景，使用这个可靠的轨道模型，研究在现实的操作场景中与铁路车辆的相互作用，以评估列车的动态行为，并预测基础设施及其组件的长期性能。
Research and development of technology for railways has found new impetus as society continues to search for cost effective and sustainable means of transport. This tasks engineers with using the state-of-the-art science and engineering for rolling stock development and advanced technologies for building high performance, reliable and cost-effective rail infrastructures. The main goal of this work is to develop detailed and validated three-dimensional slab track models using a finite element formulation, which include all components of the infrastructure. For this purpose, the parameters of the computational models are identified by performing full-scale tests of the fastening system and of the slab track, including all its material layers. The computational model proposed here is calibrated using this approach and a good agreement is obtained between experimental and numerical results. This work opens good perspectives to use this reliable track model to study the interaction with railway vehicles in realistic operation scenarios in order to assess the dynamic behaviour of the trains and to predict the long-term performance of the infrastructure and of its components.