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Dear I would consider Pdelta in your model. I found element forceBeamColumnCBDI in the opensees community. I have some questions: 1) Dose this element consider the Pdelta effects? 2) Dose this element consider the nonlinear behavior? 3) Can any one introduce me reference which explain this element o...

Dear I model a 2-Story Moment Frame with Panel Zones and RBS. I use the 2-Story Moment Frame with Panel Zones and RBS example in Openseeswiki. I have two questions: 1) How do I consider interaction between axial force and moment in columns? 2) Do I consider the yield moment equal to My= Fy *Z? Best ...

Dear Dr Fmk

Thanks for your reply.

Is (Dead load + Live load) considered as the load of the leaning column in each story ? or other combination of Dead load and Live load?

Dear I modeled a 2-D steel frame, and considered the leaning column for P-Delta effects. I have two questions: 1) Is total weight of each story considered as the load of the leaning column in each story? 2) What is combination load considered as the load of the leaning column in each story? Best Reg...

Dear In example "Pushover and Dynamic Analyses of 2-Story Moment Frame with Panel Zones and RBS",which introduced in openseeswiki , it is applied "geomTransf PDelta" and Truss elements used to link the frame and leaning columns and transfer the P-Delta effect. I have two question...

Dear I studied following example in openseeswiki: "Pushover and Dynamic Analyses of 2-Story Moment Frame with Panel Zones and RBS" I used this model and modeled five stories of 2D steel frame with Panel Zones in opensees. I would assess this frame using Incremental Dynamic Analysis (IDA). ...

Dear I modeled a pile within a soil which consist four layers. When I analysis the model, there is no error. But there is no result. Can you help me? Best Regards; code of my model is: wipe model BasicBuilder -ndm 3 -ndf 6 #UNITS: N, M, S; #node $nodeTag $x $y $z node 1 0 0 0 node 2 0 0 -1 node 3 0 ...

Dear Vesna I read this paper, but I didn't understand this following text that explained in this paper: "when using nonlinear beam elements with fiber cross sections, it is recommended to begin a simulation with the Newton- Raphson algorithm, then switch to the Krylov acceleration algorithm whe...

Dear I modeled RC moment frame (2-D). Beams and columns were modeled by forceBeamColumn element. Analysis is nonlinear time history. The transient analysis were applied as following: #----------------------------------------------------------- # Transient Analysis #----------------------------------...

Dear I modeled soil-structure interaction. The structure is RC moment frame (2-D). Beams and columns were modeled by forceBeamColumn element. The soil was modeled quad element. Analysis is nonlinear time history. The gravity and transient analysis were applied as following: -------------------------...

Dear Vesna I used VariableTransient comment for analysis. The analysis sometimes is failed. I would change convergence tolerance. Do I use the following comments? “ Here is another example with the tolerance only: set tFinal 15.0; set Tol1 1.0e-6 set Tol2 1.0e-2 . . . set ok 0 set currentTime 0.0 ...

Dear Fmk

Thanks for your help. I need to parallel OpenSees.
How do I do parallel processing in OpenSees? Can you introduce a simple example that explain this process? Do I use special comments for this aim?

Thanks.

Dear Fmk or Siliva

I modeled RC resistant moment frame subjected earthquake load. I used ForceBeam-Column element in my model. Meanwhile I used equalDOF command to constrain horizontal displacements at each floor level. There is axial force in the beams. Is this right?

Dear

I modeled RC resistant frame using forcebeamcolumn element.
Can this element consider interaction between axial force and moment in cross section? Or should I use sectionAggregator command for this aim?

Best regards.

Dear Fmk

I modeled RC resistant moment frame. Beams and columns were modeled by forceBeamColumn. In the beams the axial force is considerable. Is this resonable?

Best regards;
Mohsen.