Experimental And Numerical Investigations On
Projectile Penetration Into Polypropylene Fiber
Reinforced Concrete Targets
Author(s)
Q. Fang, X. F. Hou, Y. N. Zhang & Y. D. Zhang
Abstract
Dynamic tests were performed on 64 polypropylene fiber reinforced concrete
(PFRC) specimens by the Split Hopkinson Pressure Bar (SHPB) with the
diameter of 74 mm. The dynamic stress-strain curves at the strain rate between
10 s-1 and 102 s-1 were obtained. The effects of the strain rate, fiber volume
content and static strength on dynamic compression strength were analyzed. The
penetration of the armor piercing (AP) projectile into the PFRC targets was
investigated experimentally, and simulated by the LS-DYNA. The parameters of
the Johnson-Homquist-Concrete (JHC) model were obtained by the SHPB test
data and other relevant experimental data. A good agreement between the
numerical predictions for the penetration depth and experimental data is
observed.
Keywords: polypropylene fiber reinforced concrete, SHPB, strain rate,
penetration, numerical simulation, LS-DYNA.
1 Introduction
It is well known that the addition of small amount of polypropylene fibers into
concrete can enhance the tensile and fatigue resistance and toughness of
concrete. Although the mechanical properties of PFRC have been investigated
intensively, and widely used in engineering, most of these investigations and
applications were only limited to the static case and low fiber volume contents
(0.05～0.3%)[1-4].
In this paper, the dynamic properties of PFRC with high fiber volume content
were studied experimentally by the SHPB with diameter of 74 mm. The strain
rate was in the range of 101 s-1 to 102 s-1. The penetration of the 37 mm AP
Keywords
polypropylene fiber reinforced concrete, SHPB, strain rate,
penetration, numerical simulation, LS-DYNA.
Related Book
Other papers in this volume
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