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RokHodnik

*** ERROR # 2784 *** Solver failed in the eigen solution of reduced order model, due to the ill-conditioning of the FEA model.

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Hello!

 

I am trying to run an analysis of a solid model based on steps described in ''HowTo_OptiStruct_Flux'' tutorial included in the tutorial install directory. I want to make an vibro-acoustic analysis of an electric motor based on imported forces from Altair Flux. Currently dealing with basics and I want to make analysis on a simple motor from Flux Overlay import. I have assigned mesh, load steps, materials and constraints as in the tutorial, but I got quite a few errors. Some of them I have already managed to solve thx to this forum. 

 

Now I ran into a problem below, that I cannot find a solution online or cannot solve it myself. Full error text in attached file.

 *** ERROR # 2784 ***
 Solver failed in the eigen solution of reduced order model,
 due to the ill-conditioning of the FEA model.
 Please check if there is any message about mechanisms printed above,
 make proper fix and rerun with it.

 Some other possible causes and solutions:
 1. Solver may fail due to extreme large upper bound in EIGRL/A card.
        Reduce the upper bound.
 2. Solver may fail due to nearly rigid body modes:
        Set PARAM,RBMEIG to be higher than the eigenvalue of the highest
        rigid body modes.

 

Thanks for your help.

Best regards,

Rok

ERROR # 2784.txt

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