The OpenSees Community

Hi All, I got a question about how to set a recorder to output the force-deformation relationship of the ZeroLength Element. The OpenSees Wiki only mentioned that "The valid queries to a zero-length element when creating an ElementRecorder object are 'force,' 'deformation,' and 'material $i mat...

Thank you very much for your help and patience Dr Scott. I think basically I get your meanings, but maybe I need to learn more knowledge about the FE formulation based on the basic system. Could you please recommend me some references about the displacement-based FE formulation based on the basic sy...

Hi Dr Scott, Thank you very much for your reply. I am sorry that I can not understand well that you mentioned "you'll want to have 6 local DOFs and 3 basic DOFs, then have an internal DOF". I am trying to develop a flexure-shear coupled displacement-based beam element in OpenSees, so I wan...

Hi Dr Scott, Thank you so much for the suggestions. It is so amazing that it is you who replied to my question. I am actually a big fan of your research work. For my question, I also think I should still be able to use the basic system with 4 DOFs , and then I will use static condensation to get it ...

Hi all, I am trying to study how to develop a new displacement-based beam element in the OpenSees source code, and I got confused with the basic coordinate system. For a general displacement-based beam element, 6 DOFs are expected in the local coordinate system. In the source code of the OpenSees, t...