Research Article
Pyroshock Prediction of Ridge-Cut Explosive Bolts Using Hydrocodes
Table 1
Material properties of metals (17-4PH stainless steel, steel 1006).
| | | | 17-4PH stainless steel | Steel 1006 |
| | Parameter of shock EOS | | | | | Density | (g/cm3) | 7.81 | 7.896 | | Gruneisen coefficient | (None) | 1.36 | 2.17 | | Empirical parameter | (m/s) | 4550 | 4569 | | Empirical parameter | (None) | 1.41 | 1.49 | | Reference temperature | (K) | 295.15 | 295.15 | | Specific heat | (J/kg K) | 460 | 452 | | Parameter of Johnson-Cook strength model | | | | | Shear modulus | (kPa) | 7.7437 × 107 | 8.18 × 107 | | Static yield stress | (kPa) | 1.172 × 106 | 3.5 × 105 | | Hardening constant | (kPa) | 4.935 × 105 | 2.75 × 105 | | Hardening exponent | (None) | 0.22 | 0.36 | | Strain rate constant | (None) | 0.013 | 0.022 | | Thermal softening exponent | (None) | 1.015 | 1.0 | | Melting point | (K) | 1778 | 1811 | | Reference strain rate | (None) | 1.0 | 1.0 | | Parameter of principal stress failure model | | | | | Critical value of normal tensile stress | (kPa) | 2.8 × 106 | N/A | | Parameter of geometric strain erosion model | | | | | Erosion strain | (None) | 1.5 | N/A |
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