A computer-aided model for the simulation of railway ballast by random sequential adsorption process

Benedetto, Andrea, Bianchini Ciampoli, Luca, Brancadoro, Maria Giulia, Alani, Amir and Tosti, Fabio ORCID: 0000-0003-0291-9937 (2018) A computer-aided model for the simulation of railway ballast by random sequential adsorption process. Computer-Aided Civil and Infrastructure Engineering, 33 (3). pp. 243-257. ISSN 1093-9687

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Abstract

This paper presents a computer-aided multi-stage methodology for the simulation of railway ballasts using the Random Sequential Adsorption (RSA – 2D domain) paradigm. The primary stage in this endeavour is the numerical generation of a synthetic sample by a "particle sizing and positioning" process followed by a "compaction" process. The synthetic samples of ballast are then visualised in the Computer-Aided Design (CAD) environment. The outcomes of the simulation are analysed by comparison with the results of an experimental investigation carried out using a methacrylate container in which real samples of railway ballast are formed. A test of model reliability is carried out between the aggregates number and the grading curves of the synthetic sample and the real one. A validation is therefore performed using the ground-penetrating radar (GPR) non-destructive testing (NDT) method and the finite-difference time-domain (FDTD) simulation developed in a computer-aided environment. The results prove the viability and the applicability of the proposed modelling for the assessment of railway ballast conditions.

Item Type: Article
Additional Information: This is the peer reviewed version of the article which will be published in final form in Computer-Aided Civil and Infrastructure Engineering (http://onlinelibrary.wiley.com/journal/10.1111/(ISSN)1467-8667/). This article may be used for non-commercial purposes in accordance with Wiley Terms and Conditions for Self-Archiving.
Uncontrolled Keywords: random sequential adsorption; railway ballast modelling; numerical simulation; civil engineering; ground penetrating radar
Subjects: Construction and engineering > Civil and environmental engineering
Construction and engineering > Digital signal processing
Construction and engineering > Electrical and electronic engineering
Computing > Software engineering
Construction and engineering > Civil and structural engineering
Computing
Related URLs:
Depositing User: Fabio Tosti
Date Deposited: 24 Nov 2017 12:05
Last Modified: 14 Feb 2018 15:37
URI: http://repository.uwl.ac.uk/id/eprint/4152

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