The theoretical moment-curvature curves for specimens 3 and 4 had higher slopes
than the displacement curves approximately 25% and 8% respectively. The differential
curves were irregular and therefore their slopes could not be determined. It should be
noted that the slopes of the displacement curves for both specimens 3 and 4 were
changing at a higher rate than the slopes of the theoretical curves and therefore the
differences increased at loads close to peak. It was also evident that the theoretical curves
calculated significant post peak behavior for specimens 3 and 4 which was different than
the displacement curves that did not indicate any significant post peak behavior.
250
200
150
E 100
-A- Displacement
50 --- Theoretical
Differential
0
0.0000 0.0005 0.0010 0.0015 0.0020 0.0025 0.0030
Curvature (rad/in)
Figure 5-22. Moment-curvature curves for specimen 3
250
200
150
E 100
I-8- Displacement
50 -8- Theoretical
Differential
0
0.0000 0.0005 0.0010 0.0015 0.0020 0.0025 0.0030
Curvature (rad/in)
Figure 5-23. Moment-curvature curves for specimen 4