Numerical Simulation Study on Expansion of the Crack and Energy Variation Status in the Process of the Projectile Penetration of Concrete

DOI

10.2991/aece-16.2017.95How to use a DOI?

Keywords

penetration; stress propagation; expansion of the crack; energy variation; numerical simulation

Abstract

Based on the discrete element software PFC2D, building background grid model of concrete under simulated different projectile penetration rate, in the process of penetration of concrete target, the expansion of the crack damage, and compared with the cement mortar model. In crushing zone near the projectile formation, in away from the projectile as the big crack area, cement mortar in the move away from the projectile distribution is symmetrical, mainly along the coarse aggregate and cement mortar and concrete crack of interface to conduct; To monitor the energy conversion in the process of projectile penetration, further combining with the energy dissipation structure it was pointed out that the essence of the penetration process of damage is caused by the energy dissipation of driven by energy release of a state instability phenomenon, is a combination of energy release and energy dissipation is the internal cause of penetration gradual damage.

Copyright

© 2017, 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  - Zhongwen ZHOU
AU  - Yuanchu GAN
AU  - Qiuwan TAO
PY  - 2016/12
DA  - 2016/12
TI  - Numerical Simulation Study on Expansion of the Crack and Energy Variation Status in the Process of the Projectile Penetration of Concrete
BT  - Proceedings of the 2016 International Conference on Architectural Engineering and Civil Engineering
PB  - Atlantis Press
SP  - 434
EP  - 437
SN  - 2352-5401
UR  - https://doi.org/10.2991/aece-16.2017.95
DO  - 10.2991/aece-16.2017.95
ID  - CHEN2016/12
ER  -