PSI - Issue 70

Alok Kumar et al. / Procedia Structural Integrity 70 (2025) 145–152

148

3. Result and Discussions 3.1 Result of Moment Curvature of Beam

Table 3 Moment curvature curve of the beam

S No.

structure

CFRP Layer

Yield curvature

Ultimate curvature

Curvature ductility=UC/YC

Max moment (kN-m)

% increase ductility

% increase moment (kN-m)

1.

Original structure

0

0.0377

0.4359

11.562

120.3507

2.

2

wrapping

2

0.0296

0.3917

13.233

122.9817

14.523

2.186

structures

3.

4

wrapping

4

0.0297

0.4459

15.0135

127.9756

29.85

6.345

structures

4.4 6

wrapping

6

0.02305

0.3944

17.111

129.5418

47.994

7.64

structures

3.2 Result of Moment Curvature of column

% Increase curvature ductility

% increase moment

0.00% 10.00% 20.00% 30.00% 40.00% 50.00% 60.00%

47.99%

0.00% 2.00% 4.00% 6.00% 8.00% 10.00%

7.64%

6.35%

29.85%

14.53%

2.19%

percentage

percentage

2 wrapping

4 wrapping

6 wrapping

2 wrapping 4 wrapping 6 wrapping

Fig. 6. % increase of curvature ductility

Fig. 7. % increase of curvature moment

100 120 140 160

Moment curvature curve of beam

original structure

2 wrapping structure

20 40 60 80

4 wrapping structure

moment (kN-m)

6 wrapping structure

-20 0

0

0.1

0.2

0.3

0.4

0.5

0.6

0.7

0.8

curvature radian per m

Fig. 8. % increase moment-curvature curve of the beam