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Civil-Comp Proceedings
ISSN 1759-3433
CCP: 110
Edited by: J. Pombo
Paper 127

Numerical Simulation of a Hadfield Steel Crossing subject to an Explosion

C. Chen1, F.C. Zhang1 and D.Y. Sun2

1State Key Laboratory of Metastable Materials Science and Technology, Yanshan University, Qinhuangdao, China
2National Engineering Research Center of Cold Rolling Strip Equipment and Technology, Yanshan University, Qinhuangdao, China

Full Bibliographic Reference for this paper
C. Chen, F.C. Zhang, D.Y. Sun, "Numerical Simulation of a Hadfield Steel Crossing subject to an Explosion", in J. Pombo, (Editor), "Proceedings of the Third International Conference on Railway Technology: Research, Development and Maintenance", Civil-Comp Press, Stirlingshire, UK, Paper 127, 2016. doi:10.4203/ccp.110.127
Keywords: Hadfield steel, railway crossing, explosion, pre-hardening, simulation, plastic strain, Abaqus, finite element.

This paper shows the Hadfield steel crossing explosion hardening process and how an explosion acted on the crossing. The computer simulation software Abaqus was used to analyse the explosion parameters during the explosion. According to the explosion hardening test on the Hadfield steel crossing, a finite element model was established in Abaqus. The results showed that when a 3 mm thick explosive sheet was used to explosively harden the Hadfield steel crossing once, the explosion pressure was 5 GPa and the explosion time was 5 µs. The impact pressure produced by the explosive shock wave on the crossing surface exhibited a parabolic law, which was caused by large plastic deformation on the crossing surface. The sinkage of the surface was 0.51mm after the simulated explosion treatment. The largest plastic strain on the crossing surface was 2.2%.

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