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Dear frank thanks for your answer In my model Elastic slope on sap pushover curve and opensees have 18 percent difference with this material. Is model incorrect? I check geometric of model and matlab code. Which part of code i must change to see inelastic behavior? And yes i model only vertical reba...

hi I modeled nonlinear 5 story shear wall building with shellmitc4 element and run pushover analysis. I have 3 questions first results on sap and opensees isn't same and have 18 percent difference. discretization of mesh on sap is fine . is this difference usual? my second question is about nonlinea...

dear frank
i try it for 2 models with nonlinear beamcolumn elements and transformation constraints

dear frank thanks for your answering I know that. I don't write all of my code. i will send it to you if you want node 50 is master node on rigid diaphragm command rigidDiaphragm 3 50 2 9 16 23 30 37 44 100 107 114 121 128 135 142 292 299 306 313 320 327 334 341 348 355 first I define rigid diaphrag...

i am trying to perform pushover analysis on x direction . i define rigid diaphragms like this
#fix nodenumber fx fy fz mx my mz
fix 50 0 0 1 1 1 0

with this restraint results are good but when i restraint rotation,like this

fix 50 0 0 1 1 1 1
analysis is not converge

where is my wrong?

thanks
i know that. i had already done it
i compare this 2 pushover methods. and must do it on both direction concurrent

i am trying to perform pushover analysis on 2 direction but "integrator displacement " valid 1 degree of freedom at node. give me some advise to do pushover on both x and y direction current. i use 2 integrator displacement is it correct? pattern Plain $PushOverLoadPattern Linear { load 3 ...

dear silvia and fmk i modeled one story frame with steel material and do ida analysis, but when i increase specturum acclearation to 2g or 3g or more frame is stable, please help what is wrong? thank you , my script is : for {set i 1} {$i<=30} {incr i 1} { file mkdir data/[expr $i./10]sa wipe model ...

Hi jwieser , Fahimeh
I need SAC building model (9- story steel) , if u have it please help me
I need this for ida analysis