Research Article
Numerical Analysis of Dynamic Response of Corrugated Core Sandwich Panels Subjected to Near-Field Air Blast Loading
Table 1
Geometric parameters and simulation results of computational cases considered.
| Case number | SOD | Thickness | Cell size | Relative density of core | Equivalent solid plate thickness | Peak reflected pressure | Maximum momentum of front face | Maximum deflection | Failure mode | (mm) | Face sheets | Core | Cell wall | (mm) | (%) | (mm) | (KPa) | (kg×m/s) | Front face | Back face | Front face | Back face | (mm) | (mm) | (mm) | (mm) | (mm) | — | — |
| S20-1 | 30 | 2.0 | 17.32 | 1.0 | 20 | 10.35 | 5.79 | 5.3021 × 106 | 5.46 | — | 16.19 | Pitting | Pitting | S20-2 | 50 | 2.0 | 17.32 | 1.0 | 20 | 10.35 | 5.79 | 1.3000 × 106 | 4.40 | — | 11.89 | Pitting | Indenting | S20-3 | 80 | 2.0 | 17.32 | 1.0 | 20 | 10.35 | 5.79 | 2.9786 × 105 | 2.84 | 7.60 | 3.77 | Indenting | Mode I | S20-4 | 100 | 2.0 | 17.32 | 1.0 | 20 | 10.35 | 5.79 | 9.2518 × 104 | 2.40 | 3.52 | 2.08 | Indenting | Mode I | S20-5 | 30 | 2.0 | 17.32 | 0.7 | 20 | 7.48 | 5.30 | 5.2770 × 106 | 5.65 | — | — | Pitting | Pitting | S20-6 | 50 | 2.0 | 17.32 | 0.7 | 20 | 7.48 | 5.30 | 1.3002 × 106 | 4.79 | — | 13.04 | Pitting | Indenting | S20-7 | 80 | 2.0 | 17.32 | 0.7 | 20 | 7.48 | 5.30 | 2.9583 × 105 | 3.12 | 10.18 | 4.94 | Indenting | Mode I | S20-8 | 100 | 2.0 | 17.32 | 0.7 | 20 | 7.48 | 5.30 | 9.2578 × 104 | 2.74 | 4.11 | 2.67 | Indenting | Mode I | S20-9 | 30 | 1.6 | 17.32 | 1.0 | 20 | 10.35 | 5.00 | 4.7094 × 106 | 4.95 | — | — | Pitting | Pitting | S20-10 | 50 | 1.6 | 17.32 | 1.0 | 20 | 10.35 | 5.00 | 1.2140 × 106 | 4.60 | — | 13.54 | Pitting | Indenting | S20-11 | 80 | 1.6 | 17.32 | 1.0 | 20 | 10.35 | 5.00 | 2.3078 × 105 | 3.18 | 9.97 | 5.05 | Indenting | Mode I | S20-12 | 100 | 1.6 | 17.32 | 1.0 | 20 | 10.35 | 5.00 | 8.5525 × 104 | 2.46 | 5.09 | 2.81 | Indenting | Mode I | S20-13 | 30 | 1.6 | 17.32 | 0.7 | 20 | 7.48 | 4.50 | 4.6998 × 106 | 5.18 | — | — | Pitting | Petalling | S20-14 | 50 | 1.6 | 17.32 | 0.7 | 20 | 7.48 | 4.50 | 1.2163 × 106 | 4.95 | — | 15.76 | Pitting | Indenting | S20-15 | 80 | 1.6 | 17.32 | 0.7 | 20 | 7.48 | 4.50 | 2.2944 × 105 | 3.46 | 12.85 | 6.78 | Indenting | Mode I | S20-16 | 100 | 1.6 | 17.32 | 0.7 | 20 | 7.48 | 4.50 | 8.5567 × 104 | 2.65 | 5.74 | 3.47 | Indenting | Mode I | S20-17 | 30 | 1.2 | 17.32 | 1.0 | 20 | 10.35 | 4.19 | 3.3315 × 106 | 4.43 | — | — | Pitting | Petalling | S20-18 | 50 | 1.2 | 17.32 | 1.0 | 20 | 10.35 | 4.19 | 1.0004 × 106 | 4.70 | — | 18.69 | Pitting | Indenting | S20-19 | 80 | 1.2 | 17.32 | 1.0 | 20 | 10.35 | 4.19 | 2.1489 × 105 | 3.45 | 14.00 | 7.20 | Indenting | Mode I | S20-20 | 100 | 1.2 | 17.32 | 1.0 | 20 | 10.35 | 4.19 | 8.3993 × 104 | 2.83 | 7.71 | 4.27 | Indenting | Mode I | S20-21 | 30 | 2.5 | 17.32 | 1.0 | 20 | 10.35 | 6.79 | 5.5797 × 106 | 5.54 | — | — | Pitting | Pitting | S20-22 | 50 | 2.5 | 17.32 | 1.0 | 20 | 10.35 | 6.79 | 1.3328 × 106 | 4.23 | 20.26 | 7.20 | Indenting | Indenting | S20-23 | 80 | 2.5 | 17.32 | 1.0 | 20 | 10.35 | 6.79 | 3.0174 × 105 | 2.90 | 5.47 | 2.78 | Indenting | Mode I | S20-24 | 100 | 2.5 | 17.32 | 1.0 | 20 | 10.35 | 6.79 | 9.2833 × 104 | 2.40 | 2.27 | 1.51 | Mode I | Mode I | S20-25 | 30 | 2.0 | 17.32 | 0.5 | 20 | 5.46 | 4.95 | 5.2755 × 106 | 5.97 | — | — | Pitting | Petalling | S20-26 | 50 | 2.0 | 17.32 | 0.5 | 20 | 5.46 | 4.95 | 1.2955 × 106 | 5.07 | — | 11.18 | Pitting | Indenting | S20-27 | 80 | 2.0 | 17.32 | 0.5 | 20 | 5.46 | 4.95 | 2.9245 × 105 | 3.40 | 11.74 | 5.83 | Indenting | Mode I | S20-28 | 100 | 2.0 | 17.32 | 0.5 | 20 | 5.46 | 4.95 | 8.9711 × 104 | 3.05 | 6.15 | 3.83 | Indenting | Mode I | S28-1 | 30 | 2.0 | 24.25 | 1.0 | 28 | 7.63 | 5.85 | 5.2730 × 106 | 6.26 | — | — | Pitting | Pitting | S28-2 | 50 | 2.0 | 24.25 | 1.0 | 28 | 7.63 | 5.85 | 1.2972 × 106 | 5.42 | — | 8.64 | Pitting | Indenting | S28-3 | 80 | 2.0 | 24.25 | 1.0 | 28 | 7.63 | 5.85 | 2.9478 × 105 | 3.86 | 9.05 | 3.33 | Indenting | Mode I | S28-4 | 100 | 2.0 | 24.25 | 1.0 | 28 | 7.63 | 5.85 | 9.0553 × 104 | 4.08 | 4.57 | 1.70 | Indenting | Mode I | S28-5 | 30 | 2.0 | 24.25 | 0.7 | 28 | 5.46 | 5.32 | 5.2839 × 106 | 5.85 | — | — | Pitting | Pitting | S28-6 | 50 | 2.0 | 24.25 | 0.7 | 28 | 5.46 | 5.32 | 1.2950 × 106 | 5.75 | — | 10.18 | Pitting | Indenting | S28-7 | 80 | 2.0 | 24.25 | 0.7 | 28 | 5.46 | 5.32 | 2.9364 × 105 | 4.12 | 11.15 | 4.56 | Indenting | Mode I | S28-8 | 100 | 2.0 | 24.25 | 0.7 | 28 | 5.46 | 5.32 | 9.0679 × 104 | 3.27 | 5.16 | 2.40 | Indenting | Mode I | S28-9 | 30 | 1.6 | 24.25 | 1.0 | 28 | 7.63 | 5.05 | 4.7042 × 106 | 5.87 | — | — | Pitting | Pitting | S28-10 | 50 | 1.6 | 24.25 | 1.0 | 28 | 7.63 | 5.05 | 1.2155 × 106 | 5.55 | — | — | Pitting | Pitting | S28-11 | 80 | 1.6 | 24.25 | 1.0 | 28 | 7.63 | 5.05 | 2.3130 × 105 | 4.09 | 11.56 | 4.29 | Indenting | Mode I | S28-12 | 100 | 1.6 | 24.25 | 1.0 | 28 | 7.63 | 5.05 | 8.5910 × 104 | 3.39 | 6.14 | 2.32 | Indenting | Mode I | S28-13 | 30 | 1.6 | 24.25 | 0.7 | 28 | 5.46 | 4.52 | 4.7099 × 106 | 6.19 | — | — | Pitting | Petalling | S28-14 | 50 | 1.6 | 24.25 | 0.7 | 28 | 5.46 | 4.52 | 1.2130 × 106 | 5.83 | — | — | Pitting | Pitting | S28-15 | 80 | 1.6 | 24.25 | 0.7 | 28 | 5.46 | 4.52 | 2.3342 × 105 | 4.35 | 14.05 | 6.07 | Indenting | Mode I | S28-16 | 100 | 1.6 | 24.25 | 0.7 | 28 | 5.46 | 4.52 | 8.5914 × 104 | 3.55 | 6.82 | 3.02 | Indenting | Mode I | S40-1 | 30 | 2.0 | 34.64 | 1.0 | 40 | 5.46 | 5.89 | 5.2807 × 106 | 7.14 | — | — | Pitting | Pitting | S40-2 | 50 | 2.0 | 34.64 | 1.0 | 40 | 5.46 | 5.89 | 1.2993 × 106 | 6.29 | — | 7.79 | Pitting | Indenting | S40-3 | 80 | 2.0 | 34.64 | 1.0 | 40 | 5.46 | 5.89 | 2.9633 × 105 | 4.81 | 11.20 | 2.70 | Indenting | Mode I | S40-4 | 100 | 2.0 | 34.64 | 1.0 | 40 | 5.46 | 5.89 | 9.1120 × 104 | 4.08 | 6.20 | 1.44 | Indenting | Mode I | S40-5 | 30 | 2.0 | 34.64 | 0.7 | 40 | 3.88 | 5.34 | 5.2818 × 106 | 7.41 | — | — | Pitting | Pitting | S40-6 | 50 | 2.0 | 34.64 | 0.7 | 40 | 3.88 | 5.34 | 1.2993 × 106 | 6.64 | — | 6.14 | Pitting | Indenting | S40-7 | 80 | 2.0 | 34.64 | 0.7 | 40 | 3.88 | 5.34 | 2.9029 × 105 | 5.04 | 13.11 | 3.73 | Indenting | Mode I | S40-8 | 100 | 2.0 | 34.64 | 0.7 | 40 | 3.88 | 5.34 | 9.1133 × 104 | 4.21 | 6.73 | 2.06 | Indenting | Mode I | S40-9 | 30 | 1.6 | 34.64 | 1.0 | 40 | 5.46 | 5.09 | 4.6923 × 106 | 6.86 | — | — | Pitting | Pitting | S40-10 | 50 | 1.6 | 34.64 | 1.0 | 40 | 5.46 | 5.09 | 1.2123 × 106 | 6.43 | — | — | Pitting | Pitting | S40-11 | 80 | 1.6 | 34.64 | 1.0 | 40 | 5.46 | 5.09 | 2.3034 × 105 | 4.93 | 14.07 | 3.41 | Indenting | Mode I | S40-12 | 100 | 1.6 | 34.64 | 1.0 | 40 | 5.46 | 5.09 | 8.5560 × 104 | 4.25 | 7.85 | 1.83 | Indenting | Mode I | S40-13 | 30 | 1.6 | 34.64 | 0.7 | 40 | 3.88 | 4.54 | 4.7152 × 106 | 7.03 | — | — | Pitting | Pitting | S40-14 | 50 | 1.6 | 34.64 | 0.7 | 40 | 3.88 | 4.54 | 1.2134 × 106 | 6.65 | — | — | Pitting | Pitting | S40-15 | 80 | 1.6 | 34.64 | 0.7 | 40 | 3.88 | 4.54 | 2.3274 × 105 | 5.18 | 16.59 | 4.82 | Indenting | Mode I | S40-16 | 100 | 1.6 | 34.64 | 0.7 | 40 | 3.88 | 4.54 | 8.5552 × 104 | 4.38 | 8.46 | 2.63 | Indenting | Mode I |
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