The OpenSees Community

Dear Dr. Silvia,

Would using the recorder "PlasticDeformation" be the same as just using the moment-curvature results?

Thanks

Thanks for you guys' help. I really appreciate it. I have posted the code that is giving me the error. If I do not run any static or dynamic analysis, OpenSees works well. Using very high stiffness for Material 1 through 4 and a rotational spring for the central node in forming the element joint2D, ...

#PZelem.tcl PANELZONE MODELLING set kes1 9273149.782 set kes2 9210004.766 set kes3 4021841.983 set b 0.03 uniaxialMaterial ElasticPP 101 $kes1 0.002588122 uniaxialMaterial ElasticPP 201 $kes2 0.002588122 uniaxialMaterial ElasticPP 301 $kes3 0.002588122 uniaxialMaterial Steel01 102 12842.214 1240495....

#######Define Model####### model BasicBuilder -ndm 2 -ndf 3 geomTransf Linear 1; geomTransf PDelta 2; source LibUnits.tcl; set Tol 1.0e-8; # convergence tolerance for test #######Nodal Geometry####### node 1 0 0 -mass 1.00E-09 0 0 node 2 0 171.05 -mass 0.209411663 0 0 node 3 8.95 180 -mass 1.00E-09 ...

Hi, I am trying to use the element Joint2D to model a steel MF panel zone. I basically followed the command on Altoontash Dissertaiton. However, OpenSees kept on saying "constraint matrix not diagonal". I am not sure how to fix this problem. Then, I went onto trying the beamColumnJoint ele...