PSI - Issue 47

4

Ioan Both et al. / Procedia Structural Integrity 47 (2023) 247–252 Author name / Structural Integrity Procedia 00 (2019) 000 – 000

250

M= F 2 ∙ d

(1)

The final shape of the Moment-Deflection curve, presented in Fig. 4, was obtained by subtracting the average of the support settlements from the midspan deflection recorded by the linear displacement transducer positioned at the beam ends.

100 120 140

0 20 40 60 80

Moment [kNm]

0

10

20

30

40

50

Midspan deflection [mm]

Fig. 4. Moment-Deflection curve.

Qualitatively, the results of the experimental tests are assessed by the failure mode, the deformed shape. In Fig. 5a), a lateral displacement of the top and bottom beam flanges is observed, relative to the beam ends. Also, under the load application point, local deformation developed in the final stages of the experiment, Fig. 5b). Material properties were determined for each steel plate of 8 and 5 mm, respectively, as presented in Table 1.

Table 1. Material properties.

Steel thickness

f y ( N/mm

2 )

R

m (N/mm

2 )

A

g (%)

5 mm 8 mm

293 321

426 449

17.2 20.5

a)

b)

Fig. 5. (a) global deformation, (b) local deformation.