Question Do you know how to extract modal mass participation factors out of Nastran when running a normal modes analysis (SOL 103)? I see reference to it in the DDAM Solution, but I don’t really want to use that one. I saw something about adding METHOD=100 MEFFMASS(ALL)=YES To the .bdf, but that gives me all […]

Question After I ran the model and attached the results, nothing was available. I found the following message in the .F06 file: "USER FATAL MESSAGE 9050 (SEKRRS) ^^^ RUN TERMINATED DUE TO EXCESSIVE PIVOT RATIOS IN MATRIX KLL. ^^^ USER ACTION: CONSTRAIN MECHANISMS WITH SPCi/SUPORTi ENTRIES OR SPECIFY PARAM,BAILOUT,-1 TO CONTINUE THE RUN WITH MECHANISMS. […]