Finite Element Simulation of Medium-Range Blast Loading Using LS-DYNA
Table 1
Comparisons of tested and simulated results (test results from Boyd [15]).
Test E14
Test E15
Simulation I
Simulation II
Peak displacement at the plate center (mm)
33
Not recorded
32.4
36
Peak acceleration at 1 (g)
14657
13185
12609
12884
Peak acceleration at 2 (g)
14768
14239
16709
13560
Peak pressure at 1 (MPa)
9.4
9.4
5.9
4.9
Peak pressure at 2 (MPa)
8.7
8
4.9
4.63
Impulse at 1 (MPams)
0.44
0.38
0.44
0.46
Impulse at 2 (Mpams)
0.38
0.33
0.36
0.52
Note: simulation I used 10 mm element size and the original initial air density; simulation II used 15 mm element size and 1.2 times of the original initial air density.
