I am a new SACS user. I am running a collapse analysis on a fixed jacket structure. The structure "collapsed" because of a rotation difference greater than 2 radians. I haven't seen this happen on previous structures. The collapse trigger is typically deflection not rotation. Is there a way to track down where the rotation difference is? For example, if there is an issue due to a deflection issue I can usually track down the problem by looking through the listing file and using the joint name and DOF to find out if something is modeled incorrectly. I would like to do the same thing with the rotation issue. The structure is showing very little plasticity. I believe this is a modeling error and not a true collapse. How can I track down the rotation issue?
Hello Ryan,
Collapse produces a log file which contains the same ouput you see in the progress window when running. This will have all the information you need on diaplacement and rotation convergance and the corresponding joints in the structure.
Regards
Parvinder Jhita