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I solve my problem.
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Hello everyone, I am studying the behavior of bridge column subjected to ground excitation. The column is modeled with beamwithhinges element. I recorded the base shear and and the displacement at the deck level. When i plot the force displacement curve, it doesn't look like the usually hysteresis l...

model BasicBuilder -ndm 3 -ndf 6 set meter 1.0 set KPa 1.0 set KN 1.0 set Kip [expr 4.448*$KN] set inch [expr 0.0254*$meter] set ft [expr 12.0*$inch] set Ksi [expr 6896.6*$KPa] set pi 3.1416 set g 9.81 set fy [expr 60.0*$Ksi]; set fye [expr 68.0*$Ksi] set Es [expr 29000.0*$Ksi] set w [expr 0.14396*$...

Here is my model: puts "The units are in KN and meter" puts "The origin of the axis is at midpoint between the column \ (it also corresponds to the horizontal projection of the intersection point between the girder and beam cap lines)" puts "The axis are defined as follow: X...

Hi vesna, I run the analysis as you suggested, but the results are the same. Following are some parameters and results. column linear mass 30KN/m, 8.5m cap beam linear mass 90KN/m, 11m girder linear mass 271KN/m, 15m each span Based on these values i should have a column base reaction close to 2535K...

Hi everyone, I am modeling a 2 spans bridge with two columns using nonlinear element for columns and elastic elements for girder and cap beam. The bridge is pinned at the column bases with roller abutments. The gravity analysis gives reactions at the supports that are different from my hand calculat...

Morning, I am modeling a 2 spans bridge and would like to know if my geomtransf are correct: geomTransf PDelta 1 0 0 -1 for a circular column geomTransf Linear 2 1 0 0 for beam cap geomTransf Linear 3 0 0 1 for girder box My bent cap is in the global YZ plane Global X coincides with the longitudinal...

Hi, I am modeling a 2 span bridge for which a simplify is needed. I using a rigid element for the abutment. At the ends of the abutment I am using springs oriented in the longitudinal, transverse and and vertical directions. I know the stiffness and intend to use zero length element. 1) Am i correct...

I am trying to plot moment curvature.
Here are my commands
recorder Node -file section$secTag.out -precision 2 -time -node 2 -dof 3 disp

recorder plot section$secTag.out "Moment" 10 10 400 400 -columns 2 1
the file was created but not the plot on my screen

Hi everyone, I started using OpenSees for about two days and trying to learn the commands. In the Moment curvature example, the graph was generated using Mathlab. I am trying to use the plot recorder command in openSees but could not get a result. Can anyone help?