USER FATAL MESSAGE 9050 RUN TERMINATED DUE TO EXCESSIVE PIVOT RATIOS IN MATRIX KLL

Problem: If you ever see this FATAL message, panic!
 ^^^ USER   FATAL   MESSAGE 9050 (SEKRRS)   
 ^^^ RUN TERMINATED DUE TO EXCESSIVE PIVOT RATIOS IN MATRIX KLL.
Just joking. Read on for the answer. This is perhaps one of the most common challenge for nastran beginners

Answer 1: I have a newer post with examples on how to fix this error.

Answer 2:  Make sure you have properly added boundary conditions to your model. You can do a normal analysis SOL 103, and it may show you if you have a translation or rotation DOF unconstrained. Watch this YouTube video and refer to this guide for more details.


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