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SIMLAB Frequency Response Analysis - FATAL ERROR "eigdrv", OptiStruct Error "3428"

User: "Adam_2319"
Adam_2319
Altair Community Member
Updated by Adam_2319

I am running a modal analysis/frequency response analysis. I am using the same meshed components from a previous, successful analysis run; but I replaced 2 meshed components with updated CAD changes. I cannot see anything wrong with the meshes or the set up. However, the analysis keeps failing and the only explanation in the 'out file' is Error "eigdrv" and OptiStruct Error "3428". Does anyone know what these errors mean or reference?

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    User: "Rajashri_Saha"
    Rajashri_Saha
    Altair Employee
    Updated by Rajashri_Saha

    Hi Adam,

    Please share the .fem and .out file.

    Which version are you using?

    Thanks

    Rajashri

    User: "Adam_2319"
    Adam_2319
    Altair Community Member
    OP
    Accepted Answer
    Updated by Adam_2319

    Hi Adam,

    Please share the .fem and .out file.

    Which version are you using?

    Thanks

    Rajashri

    Hi Rajashri,

    Through trial and error I have resolved the issue. it was a fault in the tet10 mesh for the imported component. I re-meshed to tet4 mesh and it seems to be working now

    User: "Rajashri_Saha"
    Rajashri_Saha
    Altair Employee
    Updated by Rajashri_Saha

    Hi Rajashri,

    Through trial and error I have resolved the issue. it was a fault in the tet10 mesh for the imported component. I re-meshed to tet4 mesh and it seems to be working now

    Ok, good to know that it is resolved.

    Thanks

    Rajashri

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