7.2 Impact Test on 10CrNi3MoV21A Armor Steel/SiC Ceramic/UHPCC …
205
Table 7.7 Constitutive model parameters for 30CrMnSiNi2A (Li et al. 2017) and
10CrNi3MoV21A steel
Material model
Parameters
Rigid model
(30CrMnSiNi2A steel)
Density (g/cm 3 )
7.72
Young’s modulus (GPa) 210
Poisson’s ratio
0.3
30CrMnSiNi2A steel
10CrNi3MoV21A steel
JC model
Yield stress A (MPa)
1269
Yield stress A (MPa)
665
Hardening constant B
(MPa)
810
Hardening constant B
(MPa)
950
Hardening exponent n 0.479
Hardening exponent n 0.83
Strain rate constant C
0.04
Strain rate constant C
0.028
Thermal Softening m
1
Thermal Softening m
1.188
Table 7.8 EOS parameters for 30CrMnSiNi2A and 10CrNi3MoV21A steel (Steinberg 1996)
C (m/s)
S 1
S 2
S 3
γ 0
α
4569
1.49
0
0
2.17
0.46
ceramic plates subjected to the projectile impacts. Limited to the test condition,
the present study do not carry out the mechanical tests on SiC ceramic material.
Cronin et al. (2003) has proposed the JH-2 constitutive model parameters for
four common ceramic materials, i.e., Al 2 O 3 , SiC, B 4 C and AlN. Therefore, the
corresponding model parameters for SiC ceramic from Ref. (Cronin et al. 2003) are
listed in Table 7.9.
As for concrete targets, the constitutive model *MAT_JOHNSON_HOLMQUIST
_CONCRETE (HJC model) (Holmquist et al. 1993), which is verified to be effective
if the material failure is mainly controlled by compression, is applied to simulate the
response of present NSC and UHPCC materials subjected to the projectile impact
Table 7.9 Parameters of JH-2 model for SiC ceramic (Johnson and Holmquist 1994)
Parameter
SiC
Parameter
SiC
Density (g/cm 3 )
3.215 Hugoniot elastic limit (HEL) (GPa)
14.567
Shear modulus (GPa)
183
Pressure component at HELP HEL (GPa) 5.9
Intact strength constant A
0.96
Damage constant D 1
0.48
Fracture strength constant B
0.35
Damage constant D 2
0.48
Strain rate constant C
0
Bulk modulus K 1 (GPa)
204.785
Fracture strength exponent M
1.0
Pressure coefficient K 2 (GPa)
0
Intact strength constant N
0.65
Pressure coefficient K 3 (GPa)
0
205
Table 7.7 Constitutive model parameters for 30CrMnSiNi2A (Li et al. 2017) and
10CrNi3MoV21A steel
Material model
Parameters
Rigid model
(30CrMnSiNi2A steel)
Density (g/cm 3 )
7.72
Young’s modulus (GPa) 210
Poisson’s ratio
0.3
30CrMnSiNi2A steel
10CrNi3MoV21A steel
JC model
Yield stress A (MPa)
1269
Yield stress A (MPa)
665
Hardening constant B
(MPa)
810
Hardening constant B
(MPa)
950
Hardening exponent n 0.479
Hardening exponent n 0.83
Strain rate constant C
0.04
Strain rate constant C
0.028
Thermal Softening m
1
Thermal Softening m
1.188
Table 7.8 EOS parameters for 30CrMnSiNi2A and 10CrNi3MoV21A steel (Steinberg 1996)
C (m/s)
S 1
S 2
S 3
γ 0
α
4569
1.49
0
0
2.17
0.46
ceramic plates subjected to the projectile impacts. Limited to the test condition,
the present study do not carry out the mechanical tests on SiC ceramic material.
Cronin et al. (2003) has proposed the JH-2 constitutive model parameters for
four common ceramic materials, i.e., Al 2 O 3 , SiC, B 4 C and AlN. Therefore, the
corresponding model parameters for SiC ceramic from Ref. (Cronin et al. 2003) are
listed in Table 7.9.
As for concrete targets, the constitutive model *MAT_JOHNSON_HOLMQUIST
_CONCRETE (HJC model) (Holmquist et al. 1993), which is verified to be effective
if the material failure is mainly controlled by compression, is applied to simulate the
response of present NSC and UHPCC materials subjected to the projectile impact
Table 7.9 Parameters of JH-2 model for SiC ceramic (Johnson and Holmquist 1994)
Parameter
SiC
Parameter
SiC
Density (g/cm 3 )
3.215 Hugoniot elastic limit (HEL) (GPa)
14.567
Shear modulus (GPa)
183
Pressure component at HELP HEL (GPa) 5.9
Intact strength constant A
0.96
Damage constant D 1
0.48
Fracture strength constant B
0.35
Damage constant D 2
0.48
Strain rate constant C
0
Bulk modulus K 1 (GPa)
204.785
Fracture strength exponent M
1.0
Pressure coefficient K 2 (GPa)
0
Intact strength constant N
0.65
Pressure coefficient K 3 (GPa)
0