7.1 Introduction
189
the high-speed projectile impact, 3 shots of penetration test of ogive-nosed projectiles (25.3 mm in diameter and 328.6 g in mass) impacting on ceramic balls/UHPC
(110 MPa) composite targets were conducted by Shao et al. (2019). The experimental
observations indicated that the layer of ceramic balls with thickness of about 150 mm
can effectively prevent the UHPC target from destruction of the impact load with
striking velocity up to 810 m/s. Furthermore, Shi et al. (2006) performed total 19 shots
of ogive-nosed projectiles (9.9 mm in diameter and 64 g in mass) penetration test
on armor steel/concrete (47.5 MPa) and Al 2 O 3 ceramic/concrete composite targets,
respectively. Based on the comparisons of DOP and damage models of projectiles,
the ceramic/concrete composite target was proved to possess higher resistance than
the armor steel/concrete configuration.
The aforementioned experimental studies were mainly focused on the plain
concrete (NSC and UHPC) targets or ceramic/metal composite targets, while the
comparative discussions on the ballistic performances of the armor steel/UHPC,
ceramic/UHPC and armor steel/ceramic/UHPC composite targets were relatively
limited. Moreover, compared with the high-speed penetration of small caliber armorpiercing projectiles, few impact tests on the composite targets with the medium
caliber projectiles were carried out.
At present, in Sect. 7.2, totally 14 shots of 30 mm-caliber ogive-nosed projectile
penetration test with the striking velocity of about 500 m/s into seven configurations of 10CrNi3MoV21A armor steel/SiC ceramic/concrete composite targets were
carried out. The impact resistance of the composite targets was assessed quantitively
by discussing the penetration depth as well as the ballistic efficiency factor. In addition, the 2D axisymmetric numerical simulations with ALE algorithm applied to the
projectile were performed to reproduce the impact scenarios, in which the detailed
Johnson–Cook constitutive model (Johnson and Cook 1983) parameters for the armor
steel plate were calibrated from the static and dynamic mechanical tests. Furthermore,
based on the validated numerical algorithm as well as the constitutive models and the
corresponding model parameters, the energy evolutions of the projectiles and targets
during the penetration process were examined. In Sect. 7.3, twelve shots of ogive
nosed 30CrMnSiNi2A steel projectile with the diameter of 30 mm penetrating into
UHPCC target and armor steel/UHPCC composite targets were firstly conducted
with the striking velocities ranging from 372 m/s to 646 m/s. For the composite
targets, two new types of armor steels developed by Nanjing Nangang Iron and Steel
United Co., Ltd, i.e., NP450 and NP500, with different thicknesses are combined with
UHPCC. The experimental DOPs, damages of armor steel (damage mode), UHPCC
(impact crater area), and projectile (residual length, residual mass) are recorded and
discussed. Then, the major parameters of Johnson–Cook (J-C) model (Johnson and
Cook 1983) of the present two armor steels are calibrated experimentally based on a
series of fundamental tests. The corresponding numerical simulations for the present
penetration test are conducted and compared with the test data. Finally, the ballistic
characterization of armor steel/UHPCC composite target is assessed.
189
the high-speed projectile impact, 3 shots of penetration test of ogive-nosed projectiles (25.3 mm in diameter and 328.6 g in mass) impacting on ceramic balls/UHPC
(110 MPa) composite targets were conducted by Shao et al. (2019). The experimental
observations indicated that the layer of ceramic balls with thickness of about 150 mm
can effectively prevent the UHPC target from destruction of the impact load with
striking velocity up to 810 m/s. Furthermore, Shi et al. (2006) performed total 19 shots
of ogive-nosed projectiles (9.9 mm in diameter and 64 g in mass) penetration test
on armor steel/concrete (47.5 MPa) and Al 2 O 3 ceramic/concrete composite targets,
respectively. Based on the comparisons of DOP and damage models of projectiles,
the ceramic/concrete composite target was proved to possess higher resistance than
the armor steel/concrete configuration.
The aforementioned experimental studies were mainly focused on the plain
concrete (NSC and UHPC) targets or ceramic/metal composite targets, while the
comparative discussions on the ballistic performances of the armor steel/UHPC,
ceramic/UHPC and armor steel/ceramic/UHPC composite targets were relatively
limited. Moreover, compared with the high-speed penetration of small caliber armorpiercing projectiles, few impact tests on the composite targets with the medium
caliber projectiles were carried out.
At present, in Sect. 7.2, totally 14 shots of 30 mm-caliber ogive-nosed projectile
penetration test with the striking velocity of about 500 m/s into seven configurations of 10CrNi3MoV21A armor steel/SiC ceramic/concrete composite targets were
carried out. The impact resistance of the composite targets was assessed quantitively
by discussing the penetration depth as well as the ballistic efficiency factor. In addition, the 2D axisymmetric numerical simulations with ALE algorithm applied to the
projectile were performed to reproduce the impact scenarios, in which the detailed
Johnson–Cook constitutive model (Johnson and Cook 1983) parameters for the armor
steel plate were calibrated from the static and dynamic mechanical tests. Furthermore,
based on the validated numerical algorithm as well as the constitutive models and the
corresponding model parameters, the energy evolutions of the projectiles and targets
during the penetration process were examined. In Sect. 7.3, twelve shots of ogive
nosed 30CrMnSiNi2A steel projectile with the diameter of 30 mm penetrating into
UHPCC target and armor steel/UHPCC composite targets were firstly conducted
with the striking velocities ranging from 372 m/s to 646 m/s. For the composite
targets, two new types of armor steels developed by Nanjing Nangang Iron and Steel
United Co., Ltd, i.e., NP450 and NP500, with different thicknesses are combined with
UHPCC. The experimental DOPs, damages of armor steel (damage mode), UHPCC
(impact crater area), and projectile (residual length, residual mass) are recorded and
discussed. Then, the major parameters of Johnson–Cook (J-C) model (Johnson and
Cook 1983) of the present two armor steels are calibrated experimentally based on a
series of fundamental tests. The corresponding numerical simulations for the present
penetration test are conducted and compared with the test data. Finally, the ballistic
characterization of armor steel/UHPCC composite target is assessed.