Normal perforation of reinforced concrete target by rigid projectile

2008 ◽  
Vol 35 (10) ◽  
pp. 1119-1129 ◽  
Author(s):  
X.W. Chen ◽  
X.L. Li ◽  
F.L. Huang ◽  
H.J. Wu ◽  
Y.Z. Chen
Keyword(s):  
Reinforced Concrete ◽  
Rigid Projectile ◽  
Concrete Target

scholarly journals The Numerical Investigation of Aluminum Foam-protected Reinforced Concrete Slabs under Blast Loading Using AUTODYN-3D

2018 ◽  
Vol 206 ◽  
pp. 01014
Author(s):  
Ahmed K. Taha ◽  
Zhengguo Gao ◽  
Dahai Huang
Keyword(s):  
Reinforced Concrete ◽  
Aluminum Foam ◽  
Steel Plate ◽  
Three Dimensional ◽  
Experimental Tests ◽  
High Energy ◽  
Absorption Capacity ◽  
Concrete Panels ◽  
Reinforced Concrete Slabs ◽  
Concrete Target

Aluminum foam is a lightweight material with high energy absorption capacity. In this study A Nonlinear three-dimensional hydrocode numerical simulation was carried out using autodyn-3d, which is an extensive code dealing with explosion problems. In this simulation, a high explosive material (comp B) is blasted against several concrete panels. The model was first validated using experimental tests carried out by Chengqing and has shown good results. Several numerical tests were carried out to study two parameters that affect the deflection of reinforced concrete panels. The parameters included are the thickness of concrete target and the thickness of steel plate. The results showed that increasing the thickness of the steel plate has an insignificant effect on the deflection of the reinforced concrete target while increasing the thickness of the concrete panel has a significant effect on the deflection of the concrete target.

A Study for Evaluating Local Damage to Reinforced Concrete Panels Subjected to Oblique Impact: Part 2 — Simulation Analysis of the Experimental Results of Local Damage Caused by Impact of Deformable Projectiles

2017 ◽  
Author(s):  
Akemi Nishida ◽  
Yoshimi Ohta ◽  
Haruji Tsubota ◽  
Yinsheng Li
Keyword(s):  
Reinforced Concrete ◽  
Simulation Analysis ◽  
Impact Load ◽  
Oblique Impact ◽  
Local Damage ◽  
Impact Tests ◽  
Rigid Projectile ◽  
Oblique Impacts ◽  
Simulation Results ◽  
The Impact

Many empirical formulae have been proposed for evaluating the local damage to reinforced concrete structures caused by rigid projectile impact. Most of these formulae are based on impact tests perpendicular to the target structures. To date, few impact tests oblique to the target structures have been conducted. In this study, we aim to obtain a new formula for evaluating the local damage caused by oblique impacts based on previous experimental and simulation results. We analyze and simulate the local damage owing to impact by deformable projectiles. The experimental and simulation results were in good agreement and confirmed the validity of the proposed analytical method. Furthermore, the internal energy of the deformable projectile absorbed upon impact was approximately 60% of the total energy. In comparison to a rigid projectile, it is possible to reduce the impact load and consequently the damage to the target.

scholarly journals The <italic>in-situ</italic> measurement of the penetration trajectory in reinforced concrete target by grid measurement method

2016 ◽  
Vol 46 (4) ◽  
pp. 407-414
Author(s):  
HaiYing HUANG ◽  
Rong ZHANG ◽  
HuiMin LI ◽  
XiaoWei CHEN ◽  
WeiFang XU ◽  
...  
Keyword(s):  
Reinforced Concrete ◽  
Measurement Method ◽  
Concrete Target

Ultra High Performance Fiber Reinforced Concrete Behavior under Static and High Velocity Impact

2016 ◽  
Vol 711 ◽  
pp. 171-178 ◽  
Author(s):  
Christophe Pontiroli ◽  
Benjamin Erzar ◽  
Eric Buzaud
Keyword(s):  
Reinforced Concrete ◽  
High Performance ◽  
Fiber Reinforced Concrete ◽  
Tensile Fracture ◽  
Fiber Reinforced ◽  
Rigid Projectile ◽  
High Performance Fiber ◽  
Numerical Research ◽  
Concrete Model

To evaluate the vulnerability of ultra-high performance fiber reinforced concrete (UHPFRC) infrastructure to rigid projectile penetration, CEA-Gramat has led since few years an experimental and numerical research program in collaboration with French universities. During the penetration process, concrete is subjected to extreme conditions of pressure and strain-rate. Plasticity mechanisms as well as dynamic tensile and/or shear damages are activated during the tunneling phase and the cratering of the concrete target. Each mechanism has been investigated independently at the laboratory scale and the role of steel fibers has been specially analyzed to understand their influence on the macroscopic behavior. In parallel, some improvements have been introduced into the concrete model developed by Pontiroli, Rouquand and Mazars (PRM model), especially to take into account the fibers contribution in the tensile fracture process. The capabilities of the PRM model have been illustrated by performing numerical simulations of material characterization experiments. Next step will be to assess the concrete model to simulate projectile penetration into UHPFRC concrete structures.

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