Research Article
A Study of Impact Response and Its Numerical Study of Hybrid Polypropylene Fiber-Reinforced Concrete with Different Sizes
Table 4
The dynamic characteristic parameters of HPFRC in the SHPB test.
| Specimen no. | Impact load (MPa) | Strain rate (s−1) | Compressive strength (MPa) | DCF | Peak strain (10−3) | Ultimate strain (10−3) | ITP (kJ·m−3) | ITMAX (kJ·m−3) |
| A1 | 0.3 | 34 | 45.13 | 1.525 | 3.790 | 17.11 | 112.1 | 468.8 | 0.35 | 63 | 48.20 | 1.628 | 4.276 | 12.58 | 143.2 | 419.7 | 0.4 | 74 | 50.20 | 1.696 | 4.173 | 13.57 | 153.3 | 484.1 | 0.45 | 89 | 52.23 | 1.765 | 4.824 | 14.35 | 188.1 | 540.3 | 0.5 | 113 | 55.42 | 1.872 | 3.959 | 16.30 | 163.9 | 657.5 | A2 | 0.3 | 30 | 47.27 | 1.560 | 6.445 | 14.52 | 222.0 | 486.4 | 0.35 | 58 | 54.02 | 1.783 | 5.982 | 15.77 | 219.2 | 571.1 | 0.4 | 83 | 53.65 | 1.771 | 7.424 | 16.86 | 300 | 646.0 | 0.45 | 95 | 53.40 | 1.762 | 7.386 | 19.86 | 255.9 | 661.7 | 0.5 | 104 | 60.75 | 2.005 | 8.801 | 19.83 | 408.6 | 834.9 | A3 | 0.3 | 28 | 68.78 | 2.053 | 5.405 | 16.49 | 251.2 | 758.9 | 0.35 | 61 | 70.72 | 2.111 | 4.067 | 14.46 | 205.1 | 622.6 | 0.4 | 78 | 75.32 | 2.248 | 5.383 | 18.13 | 302.9 | 891.6 | 0.45 | 96 | 85.91 | 2.564 | 8.268 | 18.59 | 516.8 | 1121.1 | 0.5 | 108 | 92.9 | 2.773 | 5.132 | 17.53 | 339.8 | 999.2 | A4 | 0.3 | 34 | 68.13 | 1.914 | 4.824 | 13.61 | 248.9 | 605.9 | 0.35 | 64 | 70.25 | 1.973 | 9.476 | 15.90 | 429.4 | 710.9 | 0.4 | 83 | 72.69 | 2.042 | 9.076 | 22.95 | 450.0 | 1047.1 | 0.45 | 92 | 74.38 | 2.089 | 6.411 | 17.54 | 337.6 | 832.8 | 0.5 | 98 | 77.6 | 2.180 | 6.905 | 20.82 | 389.8 | 1051.3 | A5 | 0.3 | 37 | 69.85 | 1.810 | 6.871 | 18.03 | 351.8 | 820.2 | 0.35 | 63 | 71.50 | 1.852 | 7.103 | 19.02 | 375.6 | 904.2 | 0.4 | 72 | 74.78 | 1.937 | 3.760 | 19.59 | 204.5 | 1026.1 | 0.45 | 89 | 75.09 | 1.945 | 4.486 | 21.31 | 267.9 | 912.6 | 0.5 | 103 | 80.60 | 2.088 | 4.670 | 22.70 | 293.2 | 895.8 | A6 | 0.3 | 31 | 65.43 | 1.656 | 3.607 | 12.76 | 147.5 | 509.2 | 0.35 | 71 | 69.28 | 1.754 | 7.475 | 17.96 | 385.1 | 837.0 | 0.4 | 82 | 71.11 | 1.800 | 8.522 | 21.48 | 438.9 | 954.6 | 0.45 | 94 | 71.49 | 1.810 | 5.498 | 20.77 | 293.2 | 946.2 | 0.5 | 111 | 80.60 | 2.041 | 4.670 | 24.73 | 355.0 | 1290.8 |
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