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ishinabe wrote: > I have checked the source code "Steel01.cpp". > Then I think the source code seems to implement Ludwik's hardening equation > (not the equation proposed by Dr. Filippou et al. in EERC83-19). > But the strain hardening exponent "0.8" is incomprehensible. > I thin...

Oh I have just found the reason. I made a mistake when calculate the earthquake input energy. The first acceleration in the input ground motion file corresponds to time "0.0 sec". I took it as "0.02 sec". That caused all the differences. Sorry for the confusing problems in the la...

fmk wrote: > the reaction recorders will record the nodal force unbalance at a node > (node forces - element forces), the nodal reaction! > > in a transient analysis the other recorders will not be 0 as the inertia > forces and damping forces are not included. in a static analysis recorders > record...

blaiman wrote: > It's very simple. Look under the TclModelBuilderUniaxialMaterialCommand.cpp > file under the material/uniaxial folder and then comment out the following > lines: > extern void *OPS_DoddRestr(void); > } else if ((strcmp(argv[1],"DoddRestr") == 0)) { > > void *theMat = OPS_D...

blaiman wrote:
> I fixed the problem. Simply just commented out the "DoddRestr"
> class calls and it builds perfectly fine now.

Hi blaiman, I has encountered exactly the same error with yours. Could you please explain how you fixed the problem in detail? Thank you very much~

OK I understand~Thank you very much for your help!

For some kinds of elements such as "Force-Based Beam-Column Element" and "Beam With Hinges Element", there is such item "<-iter $maxIters $tol>" in the element commands. And the explanations in wiki are as following (for beam with hinges element): $maxIters maximum numb...

I have the same question with Panos. Does anyone know any solutions?

Sorry it didn't work because I used the old version. After I updated it works well.

Dear all, Now I am confused with some basic questions.. I want to track the locations of plastic hinges formed in a 3D steel frame model during time-history analysis. I use fiber section with forceBeamColumn elements. The sections are H-shaped and box shaped thin-walled sections. But I wonder how de...

wipe all; # Start of model generation # ========================= # Create ModelBuilder # ------------------- model BasicBuilder -ndm 3 -ndf 6 setMaxOpenFiles 610 # Define geometry # --------------- source NodeCoord.tcl puts "nodecoord" # Define Single Point Constraints # -----------------...

When I use "setMaxOpenFiles" command, OpenSEES.tcl returned "invalid command name". What's the problem? My computer OS is Windows 64.

There are two reasons:
1. I don't think there is force which can cause such deformation.
2. In the full rocking frame model the "Z" shape deformation became very large and caused the analysis fail.

I also checked the element force of the three elements for modeling BRB. The bending moments are quite small.

Some possible reasons I have checked: 1. Display mistake I checked the data. It also showed same deformation. 2. Geometric transformation Both "Corotational" and "Linear" gave the same "Z" shape deformation 3. Element type no influence 4. Constraint type no influence 5....