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  • Users: Alexkoguar
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  1. Alexkoguar

    Stiffened plate strange modes.

    Hi everyone 👋😀, i have created a stiffened plate(with ribs and spars)clamped at one end(a wing model for flutter analysis), the plate is meshed with bar2 and quad4 element, When i run the modal analysis in nastran i found strange in plane modes that i cannot completely eliminate. Can anyone help...

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