**Hi**

As shown in below simple code, we have defined a cantilever column with rectangular section with plastic moment capacity 300000 and base shear capacity equal to 1000. But when we run for a range Base shear more than the defined capacity, we didn't encounter with any error and Opensees will run the code and present a wrong Displacement-BaseShear diagram for the range above the shear capacity.

Where is the problem? Why Opensees solve this and do not give any error message/s?

Click below link to see the the result (Base shear - Displacement curve):

https://drive.google.com/file/d/1MITUkJ ... sp=sharing

Code: Select all

```
wipe
model BasicBuilder -ndm 2
node 1 0.0 0.0
node 2 0.0 300.0
fix 1 1 1 1
set steel 1
set Fy 2400.0
set E0 2000000.0
set b 0.00
uniaxialMaterial Steel01 $steel $Fy $E0 $b
set secTag 1
set numSubdivY 10
set numSubdivZ 10
set yI -5.0
set zI -2.5
set yJ 5.0
set zJ 2.5
section Fiber $secTag {
patch rect $steel $numSubdivY $numSubdivZ $yI $zI $yJ $zJ
}
set transfTag 1
geomTransf Linear $transfTag
set eleTag 1
set iNode 1
set jNode 2
set numIntgrPts 10
element forceBeamColumn $eleTag $iNode $jNode $numIntgrPts $secTag $transfTag -integration Trapezoidal
set tsTag 1
timeSeries Linear $tsTag
set patternTag 1
pattern Plain $patternTag $tsTag {
load $jNode 1000.0 0.0 0.0
}
recorder Node -file Node2Disp.txt -node 2 -dof 1 disp
recorder Node -file Node1react.txt -node 1 -dof 1 reaction
constraints Plain
numberer Plain
system BandGeneral
set tol 0.001
set iter 100
test NormDispIncr $tol $iter
algorithm Newton
set dof 1
set incr 0.01
set lambda 0.01
integrator LoadControl $lambda
analysis Static
set numIncr 220
analyze $numIncr
print -ele 1
print -node 1
```