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ERROR 160

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

Hi friends,

Please help me out!!!!!

*** ERROR # 160 ***

Gram-Schmidt reorthogonalization did not converge. This is caused by

ill-conditioning of the shifted matrix in Lanczos run.

(e.g. zero lower bound specified for a model with rigid body modes.)

Solver error no. = 728

subcase id = 1

This error was detected in subroutine splncz.

This error occurs in module 'slvdrv'.

How to solve this error?...

Thanks..

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    User: "Altair Forum User"
    Altair Forum User
    Altair Employee
    Updated by Altair Forum User

    Hello,

    You should do Eigenmodes analysis first to see if any rigid modes are there. It's a bad contact or Assembly problem. Then fix it and it should run perfectly.

    User: "Jagadhy"
    Jagadhy
    Altair Community Member

    I am facing the same issue, But I'm facing it after doing a free-free mode analysis

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