I am simulating beam-column jionts under reversed clylic loads.
but I don't know how to determine the value of p1, p2, p3 and p4 of the shear panel for BeamColumnJoint? and also Positive/Negative envelope Strain, that is pEnvStnsp?
I use the mcft theory, but the force-displacement results don't represent the pinching effect.
thanks for advising!
material for shear panel code is showed following:
############################ material for shear panel #############################################################
## Positive/Negative envelope Stress
set p1 2.1932; set p2 4.0872; set p3 4.4862; set p4 [expr $p3*1e-3];
## stress1 stress2 stress3 stress4
set pEnvStrsp [list [expr $p1*$JointVolume] [expr $p2*$JointVolume] [expr $p3*$JointVolume] [expr $p4*$JointVolume]]
set nEnvStrsp [list [expr -$p1*$JointVolume] [expr -$p2*$JointVolume] [expr -$p3*$JointVolume] [expr -$p4*$JointVolume]]
## Positive/Negative envelope Strain
## strain1 strain2 strain3 strain4
set pEnvStnsp [list 0.0002 0.004465 0.0131 0.0269]
set nEnvStnsp [list -0.0002 -0.004465 -0.0131 -0.0269]
How to determine the parameters of Joint shear panel ?
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