DEM Simulation and Analysis for Drop-Weight Experiments of Barite Concrete Beam

DOI

10.2991/iccet-15.2015.259How to use a DOI?

Keywords

barite concrete; particle flow code in two dimensions; numerical simulation; strain rate; failure mode

Abstract

A meso-scale discrete element model(DEM)of barite concrete beam was developed by the aid of DEM software PFC2D. Using this model, numerical simulations of the test conditions in meso-scale were conducted as well. The dynamic failure process of barite concrete was simulated by changing the quality and drop height of the hammer under the condition of strain rates ranging from 1.4s-1 to 4.0s-1, which got the curve of force histories, vertical deflection histories and strain histories.The results of simulation match well with the measurements, thus the model is validated experimentally. Compared with the failure mode at low strain rates, the failure mode at high strain rates suggests that the occurrence of more cracks is the key factor for the strain-rate effects in concrete.

Copyright

© 2015, the Authors. Published by Atlantis Press.

Open Access

This is an open access article distributed under the CC BY-NC license (http://creativecommons.org/licenses/by-nc/4.0/).

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TY  - CONF
AU  - Zhenfu Chen
AU  - Longbin Li
AU  - Qiuwang Tao
AU  - Yuanchu Gan
AU  - Xiqi Liu
PY  - 2015/11
DA  - 2015/11
TI  - DEM Simulation and Analysis for Drop-Weight Experiments of Barite Concrete Beam
BT  - Proceedings of the 5th International Conference on Civil Engineering and Transportation 2015
PB  - Atlantis Press
SP  - 1386
EP  - 1392
SN  - 2352-5401
UR  - https://doi.org/10.2991/iccet-15.2015.259
DO  - 10.2991/iccet-15.2015.259
ID  - Chen2015/11
ER  -