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You don't specify node in arc-length method because at each increment the controlling parameter that is being incremented is <s> (the arc-length) and this parameter is derived by taking into account all displacements at dofs (plus the load parameter in case of spherical arc-length). Instead, you spe...

Hello, I am testing the simple problem of a cantilever with a concentrated load at its tip, using various different beam elements. For some reason the deflection at the tip starts to deviate from the linear elastic one for the most cases of varying the load value. At the end I print the data info fo...

Hello, I have the same issue, although I am using Ubuntu 18.04. I have tcl8.5 and 8.5-dev installed, along with gfortran. I also installed subversion but when I tried using the command to connect to the Opensees repository, it would fail to connect. I tried to following commands: 1) svn co svn://ope...