Discrete Element Modelling of Railway Ballast Problems: an Overview

IF 12.1 2区工程技术 Q1 COMPUTER SCIENCE, INTERDISCIPLINARY APPLICATIONS

Archives of Computational Methods in Engineering Pub Date : 2024-12-19 DOI:10.1007/s11831-024-10203-6

Peyman Aela, William Powrie, John Harkness, Guoqing Jing

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Abstract

Ballast made up of discrete granular particles of rock is a principal component of railway tracks. This review paper focuses on using Discrete Element Modelling (DEM) for modelling ballast in railway track systems. It provides a comprehensive overview of past, present, and future challenges and developments in this area of research. The review discusses the various analysis principles used in DEM, including contact mechanics, representation of particle geometry, breakage and abrasion, and inclusions such as geosynthetics, fibres and rubber elements. It also describes the numerical interfaces between DEM and other analysis types (e.g., finite element modelling, multi-body dynamic, computational fluid dynamics, smoothed-particle hydrodynamics) that have been implemented to simulate ballasted railway-related problems, such as the subgrade modelled as a continuum and sleepers, and fluid and mechanical interactions, such as water washout, ballast flight, and track maintenance machines. Finally, the review outlines future challenges and directions for numerical analyses of ballasted railways.

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铁路道砟问题的离散元建模：综述

道砟由离散的岩石颗粒组成，是铁路轨道的主要组成部分。本文主要讨论了用离散元模型（DEM）对铁路轨道系统中的道砟进行建模。它提供了一个全面的概述过去，现在和未来的挑战和发展在这一领域的研究。本文讨论了DEM中使用的各种分析原理，包括接触力学、颗粒几何形状的表示、断裂和磨损，以及土工合成物、纤维和橡胶元素等内含物。它还描述了DEM与其他分析类型（例如，有限元建模、多体动力学、计算流体动力学、光滑颗粒流体动力学）之间的数值接口，这些分析类型已被用于模拟有碴铁路相关问题，例如将路基建模为连续体和枕木，以及流体和机械相互作用，例如水冲蚀、压载物飞行和轨道维护机器。最后，综述概述了未来有碴铁路数值分析的挑战和方向。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Archives of Computational Methods in Engineering 工程技术-工程：综合

CiteScore

19.80

自引率

4.10%

发文量

153

审稿时长

>12 weeks

期刊介绍： Archives of Computational Methods in Engineering Aim and Scope: Archives of Computational Methods in Engineering serves as an active forum for disseminating research and advanced practices in computational engineering, particularly focusing on mechanics and related fields. The journal emphasizes extended state-of-the-art reviews in selected areas, a unique feature of its publication. Review Format: Reviews published in the journal offer: A survey of current literature Critical exposition of topics in their full complexity By organizing the information in this manner, readers can quickly grasp the focus, coverage, and unique features of the Archives of Computational Methods in Engineering.