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Hi , everybody. I 'm confronted with a big question. Any body help me? :( I have to model element dropping ,so I try twoNodeLink element. I built a model with a dispbeamcolumn element in the middle and two zero length twoNodeLink elements in each end. Like : 1 101 202 2 From 1 to 101 ,202 to 2 are t...

Actually I have a same problem with this . It's wired that I got high axial force in dispbeamcolumn element ,even with no rigid diaphragm .Could you give any advice for this ,fmk?

After so many days , I still cann't find where the problem is. my section is below: set cover [expr 25*$in]; set numBarsTopCol 4; set numBarsBotCol 4; set numBarsIntCol 2; set barAreaTopCol [expr 201.1*$in*$in]; set barAreaBotCol [expr 201.1*$in*$in]; set barAreaIntCol [expr 201*$in*$in]; set numBar...

It seems to be the element problem. When I changed the element from nonlinearBeamColumn to dispBeamColumn ,it can run a little forwrads, but not to the end.The element type of EX.7 is also nonlinearBeamColumn, and it can get to the end.WHY? Is there any limitation of the element or sometihing else? ...

Hi everybody. I built a model to analyze, imitating EX.7, when I applied gravity load ,it runs well ,but when I did pushover analysis ,I found it didn't converge ,the error message are : failed to get compatible forces for element :2217<dw :<<7.766544 etc.I checked it carefully ,but still cann't fix...

Thank you ,fmk. I have figured it out. It's the system problem.

fmk,Thanks for your reply. I build the frame imitating example 7. But I can apply gravity on it. The error message is this: ProfileSPDLinDirectSolver::solve() - aii < 0 (i, aii): (17, 0) WARNING NewtonRaphson::solveCurrentStep() -the LinearSysOfEqn failed in solve() StaticAnalysis::analyze() - the A...

I build a frame to do static analysis,but the compiler print the message "should be "set varname ?newvalue?"".I check it for a long time ,but I cann't find the reason. what's wrong with my model on earth?Could you help me? I list my model below: wipe; # clear memory of all past m...

Thanks for your rapid reply.

Hi, everyone.
I'm confused about this:If I define a RigidDiaphragm in the beginning, can I remove it in the analysing process, just like removing elements ? If approved, how to remove it (the command)?
Could anyone help me? Thanks a lot!

Yes,I anderstand what you said.I nearly forget it.Thanks.

I am learning from Example7 of the EXAMPLES file . In the file Ex7.Frame3D.analyze.Dynamic.sine.Uniform.tcl , I can run the file ,but I have a question on it. In the sine wave definition, the Duration of it is 3 seconds, BUT the ground motion analysis parameters defines maximum duration of ground-mo...

OK,got it. thanks!

Thanks,fmk.
I understand what you mean, but what I meant is how to extract the curvature in the list ,because I want to use the result of the eleResponse command in lindex command.As I konw,the deformation items of section are: axial-strain and curvature.The return value refers to what?

Could anyone help me? SOS...