PSI - Issue 59

Volodymyr Romanіuk et al. / Procedia Structural Integrity 59 (2024) 471 – 478

475

5

Volodymyr Romanіuk et al. / Structural Integrity Procedia 00 (2019) 000 – 000

Fig. 6. Deflections of beams in the span with different types of intermediate supports.

Fig. 7. Stresses in beams in a span with different types of intermediate supports.

characteristic for a beam with an intermediate support of type 1. For beams with other support types, these dependencies are practically linear up to the design load value q = 64.5 kN/m. Consequently, while the type of intermediate support influences the behavior of a continuous beam in the span, its impact is not significant. Table 2 shows the maximum stress values at characteristic calculation points 1...11 of sections 1-1, 2-2 and 3-3 of the support parts of the beams (see Figs. 2, 3, 4, 5). As anticipated, the highest stresses are observed at the point 3 of beams with unwelded holes. However, these stresses do not surpass the calculated resistance of the utilized steel beyond the yield point. In cross section 3-3, Table 2. The maximum stress values at the calculated cross-section points of the supporting part of the perforated beam. No. of the output profile / support type Stress, MPa Cross section 1-1 Cross section 2-2 p. 1 p. 2 p. 3 p. 4 p. 5 p. 6

Normal

37.38 -28.80 37.33 -28.30 48.14 -17.06 53.97 -11.23

161.04

-228.32 -25.27 -228.78 -25.08 -32.44 -11.81 -45.19

-57.25 31.30 -57.21 31.76 -51.19

78.74 -26.18 78.28 -26.09 56.14 -16.17 60.85 -10.08

-109.64 -72.53 -107.93 -71.12 37.06 -14.26 37.03 13.63

20/1

10.43

Tangentialі

Normal

160.74 10.12 31.72 -12.60 31.69 13.20

20/2

Tangential

Normal

20/3

Tangential

-8.00

Normal

-68.92

20/4

Tangential

11.12

6.97

No. of the output profile / support type

Cross section 2-2

Cross section 3-3

Stress, MPa

p. 7

p. 8

p. 9

p. 10

p. 11

Normal

119.34

-95.90 -28.36 -96.22 -28.44 -57.22

66.37 -0.31 70.84 -7.75 68.40 -2.34 72.78 -8.11

-28.88

-188.71

20/1

Tangential

-2.09

2.12

72.09

Normal

122.45

-13.99

-101.59

20/2

Tangential

-1.33

9.85

32.90

Normal

-38.43 -12.00 -51.10 12.69

-27.01

-204.51 -37.93 -103.12

20/3

Tangential

8.73

-2.61

Normal

-74.97

-13.54

20/4

Tangential

-9.10

8.15

35.31