Hello,
I am facing issues with regards to the modal run in abaqus. I had requested frequency upto 80Hz. It gave me output till 55Hz. I receive these two errors in the msg file.
***ERROR: MAXIMAL NUMBER OF LANCZOS RUNS IS REACHED
FIRST EIGENVALUE REQUESTED BY THE USER 1
***ERROR: THE LANCZOS SOLVER HAS FAILED TO FIND ALL THE EIGENVALUES WITHIN THE
SPECIFIED RANGE
THERE MAY BE MORE EIGENVALUES IN THE SPECIFIED RANGE THAN REQUESTED
from what I have read so far this has to do with the memory allocation.
I tried a few alterations,
-changed Block Size =4(default is & I guess), same errors I received
-Changed the solver to SUBSPACE, it gave me the following error
***ERROR: An error occurred during a write access to
the disk space on your system.
- Changed the solver to AMS, this did solve. The variation in frequency was with in 5% from that of the lanczos solver. I think AMS is very selective while writing the outputs and that's how it did over come this memory issue(kindly correct if wrong).
But my fatigue results showed a lot of activity. I just want to be sure and see if the model behaves in a similar was with lanczos solver. Do I get to see the same active areas with lanczos.
Could somebody guide me to get this model running with other solver.
Thank you!
