Linear Buckling

A_20330
A_20330 Altair Community Member
edited March 26 in Community Q&A

Hello, 

I need help when I run the model for linear buckling I get this massage : 

 

 Quit after 5 factorizations with no new information. Lanczos met
   difficulty in shifting to the target eigenvalues.
   Please add or narrow the bounds in EIGRL card.

 

And there is no buckling results in the .h3d file, only linear results 

the model was done : 

first load step : linear static (SPC with DOF123456) and Force(50 N) 

Second load step : Linear Buckling ( SPC ), (EGRIL : ND 10) & STATSUB(BUCKLING) 

how to fix this problem ? 

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Answers

  • Rajashri_Saha
    Rajashri_Saha
    Altair Employee
    edited March 26

    Hi,

    From the error message it looks to be issue with EIGRL card.

    Please let us know what bounds are given in EIGRL card?

    It will be good to investigate if you can share the .fem file.

    Thanks

    Rajashri

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