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  1. relaxrock

    Flutter Analysis

    بسم الله الرحمن الرحیم. Hi. I am beginner to flutter analysis, using zona and nastran. I wanna a test case to verify my results. Does anyone have a flutter analyzed model of a wing? Regards Ehsan Badri Kouhi
  2. relaxrock

    MPC Explicit vs RBE2

    بسم الله الرحمن الرحیم Hi. They are not completely the same. RBE is a rigid beam element (infinite stiffness) but when u use an explicit constrain it is like separating a plate into tow pieces, e.g. when u connect tow parts of a beam with explicit MPC the slope of the beam before and after the...
  3. relaxrock

    Augmentation of Residual Vector

    Thanks but it is not what I mean. anyway, thanks for ur attention. :)
  4. relaxrock

    Augmentation of Residual Vector

    Hi! Does anyone now what is the residual vector? I have a large model. After a modal solution I get two sets of eigenvalues. "Before augmentation of residual vector" and "After augmentation of residual vector". I have no idea what is this residual vector. Regards Ehsan Badri-Kouhi
  5. relaxrock

    Augmentation of Residual Vector

    Hi! Does anyone now what is the residual vector? I have a large model. After a modal solution I get two sets of eigenvalues. "Before augmentation of residual vector" and "After augmentation of residual vector". I have no idea what is this residual vector. Regards Ehsan Badri-Kouhi

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