The OpenSees Community

Dear Dr. Terzic,

I sent an email to you by this subject: "doRayleigh command problem in the zero-length element".

Thank you.
Mohsen

Dear Vesna, I found that! In the case of rotating a zero-length element, If we want to assign damping to it, we should put "-doRayleigh 1" before the "-orient" command. So, the OpenSEES assigns damping correctly. This is especially important for those people who want to model ske...

Dear Vesna, Thank you for your comment. Actually, the problem was due to assigning the Rayleigh damping in the model. I did not put this command at the end of the zero-length element (-doRayleigh 1). However, I have another problem and would be grateful, if you investigate it. When I rotate a zero-l...

Dear Vesna, I modeled a one story symmetric linear 3D frame with 3 degrees of freedom in the OpenSEES. To model the linear substructure, I employed a zero-length element and put it right at the mass center of the model. I also assigned three elastic materials to the zero-length element along the X (...

Dear "eugenio chioccarelli", Salam, In addition to the method Frank suggested you, you can also use "Elastic" materiel to add damping to your SDOF model. I myself used this method to model bearings. Please, care: Elastic Force = k(x)+c(dx/dt) uniaxialMaterial Steel01 $Tag1 $Fy $k...

Dear Frank, Eventually, I found the cause of the problem :D . As I discovered (!), the "stop.exe" file, which is an executable file, must be put at the sub-folder of "bin" i.e. "C:\tcleditor\bin" beside the "OpenSees.exe" file. Although, I do not know that how...

fmk wrote: > you will need to find where the problem is in the script. try adding 2 > lines to the code near the start of the file. > and then keep moving these 2 lines further down the script until you find > the problem, i.e. your window goes away. > > puts "GOT HERE" > exit Dear Frank, ...

Dear Silvia, Salam, I have a bit problem with running of OpenSEES. When I am running my code, in the end the cmd.exe window does not stay on the my laptop's screen and it is suddenly closed. I am not aware why it occurs. If you or any one else has had same problem and solved it, I would be very than...