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Natural frequency of Normal Modes and Themal load prestressed Normal Modes gives same results?

User: "Mugundhan03"
Mugundhan03
Altair Community Member

Description: Natural frequency of normal modes and the thermal load prestressed normal modes give the same natural frequency?

Product/Topic Name : HyperMesh 2025 -OptiStruct/Issues in Prestressed Normal mode analysis

 

Normal modes.fem
Screenshot 2025-05-27 161352.png
Prestressed Model.fem

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    User: "solon"
    solon
    Altair Employee

    Hi,

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

    image.png
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