The OpenSees Community

Dear Frank, Thanks a lot for your reply. It is really a tricky problem. I did try to build parallel without any success. However, since I realize that running OpenSees in Linux, the speed increase about 4 or 5 times. In addition to that I bought a new computer with double speed of processor. The tot...

Hi everyone, I'm doing research about nonlinear analysis of concrete structure. Because my model is very large so it took very long time to get results. I know OpenSees is also developed to run in parallel computer so I'm trying to go this way in order to improve the speed of running my model. I'm c...

Can anyone explain to me what function of the *.TEX files in Opensees source code is?
Thank you very much !

Thank you very much. I think I can start from this example. It is very useful

Thank you for answering my question. Your answer is about restraining the dofs, but that way I think every nodes still have the same number of dofs. My purpose is trying to create an element with 9 nodes, each 8 external nodes have 5 dofs, and 1 internal node has 2 dofs, so in total the local stiffn...

My research relates to shell element and I'm trying to use Opensees as FEM framework. I want to create a new element with 9 nodes, however the number of dofs at each node is not the same. Can I define nodes with different dofs in Opensees. In addition, at each node of the shell element there are 3 d...

Hi everyone, I have some question regarding shell elements developed in OpenSees. As I know the shell elements are based on the concept of non-flat (or curved, or degenerated) shell element, which was first proposed by Ahmad et al. 1970. As I understand that this type of shell element requires us to...