Issue 55

M. Rahmani et alii, Frattura ed Integrità Strutturale, 55 (2021) 88-109; DOI: 10.3221/IGF-ESIS.55.07

Figure 21: Stress-strain diagram.

Tangent modulus

-

Density

Young modulus Poisson ratio

Yield stress

Alporas foam Target

185 kg/m 3

30 MPa

0.29

0.25 MPa

0.64 MPa

Table 9: Properties of Alporas foam.

Elastic modulus

-

Density

Poisson ratio

Yield strength Shear modulus

Stainless steel 304

8000 kg/m 3

193 MPa

0.29

205 MPa

86 GPa

Table 10: Properties of stainless steel 304.

In the Article [17] (mm)

Research study (mm)

Ρ p (kN/m

2 )

l 0 (mm)

V 0 (m/s)

Error (%)

C (mm)

10

433

47

160

2.0

2.4

20%

10

388

50

321

4.4

5.1

15%

10

509

45

434

8.1

9.4

16%

10

503

48

551

12.8

14

9%

22

393

51

157

1.1

1.3

18%

22

487

48

265

3.1

3.7

19%

22

490

47

414

5.7

6.7

17%

22

470

48

570

9.2

11

19%

Table 11: Comparison of experimental and simulation results.

102