PSI - Issue 28

Victor Kats et al. / Procedia Structural Integrity 28 (2020) 602–607

605

4

V. Kats, V. Morozov / Structural Integrity Procedia 00 (2020) 000–000

10 9

1.6

1.4

1.2

1

P, Pa

0.8

0.6

0 0.2 0.4 0.6 0.8 1 1.2 1.4 1.6 1.8 2 V, m 3 10 -8 0.4

Fig. 3. Dependence of the pressure provided by the explosion from the explosion channel volume: obtained form experiments ( ♦ ) and calculated by provided model (line).

10 9

1.6

1.4

1.2

1

P, Pa

0.8

0.6

0.4

0

1

2

3

4

5

6

10 -4

r, m

Fig. 4. Dependence of the pressure provided by the explosion from the explosion channel radius: obtained form experiments ( ♦ ) and calculated by provided model (line).

The pressure of the shock wave ( P 1 ) is determined by the Gru¨neisen equation (3) with parameters (see table 1): r = 0 , 5 mm , ρ = ρ 1 = 90 kg / m 3 , ε = 8 . 5 · 10 6 J / kg . So, P 1 = 574 MPa . With parameters ρ 2 = 1180 kg / m 3 , c 2 = 2670 m / s , pressure propagated inside the PMMA media may be calculated by equation (4): P 2 = 1067 MPa .