Research Article
Numerical Simulation on Selection of Optimal Delay Time for Precise Delay Blasting
Table 2
Parameters of the HJC constitutive model of concrete.
| | Item name | Value | Item name | Value |
| | Density ρo/(g·cm−3) | 2.300 | Reference strain rate EPSO | 1.000 | | Shear modulus G/Pa | 9.681 | Minimum plastic strain EFMIN | 0.010 | | Strength parameter 1 A | 0.300 | Strength parameter 5 SFMAX | 7.000 | | Strength parameter 2 B | 1.730 | Volume pressure during crushing PC/1011 Pa | 8.000E − 05 | | Strength parameter 3 C | 0.005 | Volume strain during crushing UC | 6.200E − 04 | | Strength parameter 4 N | 0.790 | Ultimate volume stress PL/1011 Pa | 3.470E − 02 | | Static yield strength Fc/1011 Pa | 2.400E − 04 | Limit volume strain UL | 8.696E − 02 | | Tensile strength T/1011 Pa | 3.037E-05 | Damage constant 1 D1 | 0.04 | | Damage constant 2 D2 | 1.0 | Pressure parameter 2 K2 | −2.430 | | Pressure parameter 1 K1 | 1.160 | Pressure parameter 3 K3 | 5.06 |
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