Study on the Cyclic Loading Effects to the Railway Ballast

Xue Jun Wang; Bin Hua; Yi Lin Chi; Xue Yu Zhao; Fu Yu Li

doi:10.4028/www.scientific.net/AMR.724-725.1736

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HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 724-725Study on the Cyclic Loading Effects to the Railway...

Study on the Cyclic Loading Effects to the Railway Ballast

Abstract:

When ballast materials are subjected to cyclic loading, as a result, the change of particles micromechanical properties will lead to ballast degradation, permanent deformations on the railways step by step. In this paper, it presented a coupling discrete particle-flow simulation model of the railway ballast for cyclic tamping loading. Tamping frequency changes from 25HZ to 60HZ in numerical simulation process. Simulation results that the ballast compaction rate increases linearly with frequency up to a characteristic frequency 35HZ and then it declines in inverse proportion to tamping frequency. The aim of this paper is to study on the effects on the railway ballast under cyclic loading. The study shows that the discrete element method is a valid method for investigation of the microscopic properties of railway ballast now, while we have no other better research method.

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Periodical:

Advanced Materials Research (Volumes 724-725)

Pages:

1736-1739

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.724-725.1736

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Online since:

August 2013

Authors:

Xue Jun Wang, Bin Hua, Yi Lin Chi, Xue Yu Zhao, Fu Yu Li

Keywords:

Compaction Rate, Contact Dynamics Method, Cyclic Loading, Discrete Element Modeling, EDEM2.4.4., Railway Ballast Track

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