PSI - Issue 33

8

Di Trapani et al./ Structural Integrity Procedia 00 (2019) 000–000

Fabio Di Trapani et al. / Procedia Structural Integrity 33 (2021) 896–906

903

and  is the conversion factor used to make experimental 4-point load test and uniform load tests comparable and assuming the following values:

1            1.557 w h    

4 po int load 

(5)

1.138

uniform load

Table 2. Hybrid experimental-numerical database

b f 

Load appl.

F OOP (kN) 22.16 41.90 29.14 33.70 29.00 33.90 87.71 39.70

Q

h

w

w/h

t

h/t

Test reference

Specimen

(mm) 1830 1830 1830 2750 1250 1625 1830 1830 1830 1830 1830 1830 1830 1830 1830 1830 1830 1830 1830 980 1635 980

(-)

(mm) (mm) (-) (N/mm 2 ) (kN)

Ricci et al., 2018

80_OOP_4E 120_OOP_4E

2350 2350 1830 4200 1700 2438 1350 2415 1350 2350 1830 2350 1830 2350 2350 1830 1830 2350 2350 2350 2350 2350

0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0

4-point 4-point 4-point 4-point 4-point Airbag Airbag Airbag Airbag Airbag 4-point 4-point 4-point 4-point 4-point 4-point 4-point 4-point 4-point 4-point 4-point 4-point

1.28 80

22.9 3.16

1.28 120 15.3 3.16

De Risi et al., 2019

OOP

1.00 80

22.9 4.74

Calvi & Bolognini, 2001 Koutas & Bournas, 2019

10

1.53 135 20.4 6.57

S_CON

1.36 65 1.50 48 1.38 90 1.48 80 1.38 90 1.28 80 1.28 200 1.00 200 1.28 80 1.28 80 1.00 80 1.00 80

19.2 21.00 33.9 23.90 10.9 12.80 20.4 4.29 10.9 25.00 22.9 3.16 9.2 3.16 9.2 4.74 22.9 1.58 22.9 6.32 22.9 2.37 22.9 9.48

Angel, 1994

1

Sepasdar, 2017

IF-ND SIF-B IFNG

Akhoundi et al., 2018 Nasiri & Liu, 2020

140.00

FEM-R-L1 FEM-DR-G1 FEM-R-G2 FEM-DR-G2 FEM-R-M1 FEM-R-M2 FEM-DR-M1 FEM-DR-M2 FEM-R-M3 FEM-R-M4 FEM-R-Q1 FEM-R-Q2 FEM-R-Q3

45.43 56.98

1.00 120 15.3 4.74

101.39 133.72

16.29 29.57 21.49 39.00 32.07 58.20 23.31 24.68 26.04

FEM – Analyses

1.28 120 15.3 1.58 1.28 120 15.3 6.32

23.5 47.0 70.5

1.28 80 1.28 80 1.28 80

22.9 3.16 22.9 3.16 22.9 3.16

Experimental [kN]

Fig. 9. Comparison between experimental and predicted OOP resistance values by the proposed formulation.