Example 8, OpenSEES crashes when asked for eigenvalues

fanouraki · Post by **fanouraki** » Tue Aug 31, 2010 6:49 am

Hi there, when I run example 8 (3D generic frame, RC sections) with OpenSEES 2.2.1 it seems as if everything is fine. But when I ask for e.g. the first eigenvalue, it crashes. A friend of mine and I ran the exact same script on different computers: mine crashed, his worked (he isn't sure as to which version of OpenSEES he used). Any suggestions? Thank you in advance!!

vesna · Post by **vesna** » Tue Aug 31, 2010 4:13 pm

I just performed eigenvalue analysis for example 8 using OpenSees 2.2.1 and it worked. I Inserted eigen command immediately after the masses were assigned to all nodes (just before "# LATERAL-LOAD distribution for static pushover analysis").

fanouraki · Post by **fanouraki** » Tue Aug 31, 2010 4:19 pm

Thanks - I'll check it once more. I ran the analysis using OpenSEES 2.1.0 and it didn't crash. I am unsure as to what the underlying cause for the crash is.