Investigation of Three Concrete Material Models of LS-DYNA for Analysing Pre-stressed Concrete Sleepers
Publish place: 10th International Congress on Civil Engineering
Publish Year: 1394
نوع سند: مقاله کنفرانسی
زبان: English
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شناسه ملی سند علمی:
ICCE10_0610
تاریخ نمایه سازی: 19 تیر 1394
Abstract:
As an essential part of ballasted track, pre-stressed concrete sleepers (PCSs) play a major role in track performance and safety. Depending on track condition and train speed, PCSs are subjected to high magnitude dynamic loads which can cause premature damage, mostly in the form of crack. To investigate the behavior of high performance concrete sleepers under the dynamic loads, a finite element model of a PCS has been developed using LS-DYNA and has been validated based on available literature. This article highlights the suitability of concrete material models, implemented in LS-DYNA, for simulating concrete material of the PCSs. Three material models, including MAT072R3, MAT084 and MAT159, have been investigated. The results indicate that when the generated parameters are used, three models overestimate the bending moments and tensile stresses at the rail seat. However, the anticipated results using MAT084 shows less discrepancy.
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Authors
Javad Taherinezhad
PhD Candidate in Civil Engineering Department of Infrastructure Engineering, the University of Melbourne, Melbourne, Australia
Priyan Mendis
Professor in Civil Engineering Department of Infrastructure Engineering, the University of Melbourne, Melbourne, Australia
Tuan Ngo
Senior Lecturer in Civil Engineering Department of Infrastructure Engineering, the University of Melbourne, Melbourne, Australia
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