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Normal modes and the thermal loaded prestressed normal models gives same natural frquency ?

User: "Mugundhan03"
Altair Community Member

Natural frequency for normal modes and the thermally loaded prestressed normal models gives the same natural frequency?

And another issue is I will not be able to proceed directly to the normal modes analysis when it is prestressed with thermal. Solver does not proceed to compute console?

Screenshot 2025-05-27 161352.png

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    User: "solon"
    Altair Employee
    Accepted Answer
    Updated by solon

    Hi,

    Please take a look in the .out files. The eigen frequencies are different between the two models.

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    User: "Mugundhan03"
    Altair Community Member
    OP

    Yes, there is a difference in eigen frequencies. But frequency must be higher in normal mode analysis compared to thermal prestressed normal mode analysis? In our case, it's completely different.