ON THE EFFECTS OF CIRCULAR BOLT PATTERNS ON THE ...

Figure 4-18 Bolted/Bolted Double Web Angle Connection Finite Element Model, And Mesh Properties.
Moment (kip.ft)
60
45
30
15
0
Rigid End-Cap
Figure 4-19 Comparison Of The Hysteresis Of The FEM And Experimental Results Of The Bolted/Bolted
Double Web Angle Connection.
It is interesting to note that the flat region formed in the hysteresis of the bolted/bolted double web
angle connection is identically predicted by the FEM algorithm. The flat region presented in Figure 4-19 is
due to the elongation of the beam web’s bolt-holes and the bearing failure which causes a change in
61
Cyclic Load
Connection Zone
-6% -5% -4% -3% -2% -1% 0% 1% 2% 3% 4% 5% 6%
-15
-20
-30
-45
-60
Flat region
Drift (%)
Numerical
Experimental
80
60
40
20
0
-40
-60
-80
(kN.m)