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  1. urun4fun123

    Transposition of load vector

    Hi I want to perform the following multiplication in ANSYS 11.0 multiphysics: {r}^T * {modeshape} where {r}^T is the transposition of the loadvector I've applied gravity loads to a model using the ACEL command. When i do a modal analysis, I'm capable of writing each modeshape into to a...
  2. urun4fun123

    Using *VOPER for vector multiplication

    Hi I've defined a Vector {R} 100x1 and a vector {U} 100x1 in ANSYS using making an array. Then i want to calculate the product {U}^T*{R}. I cant find a command to get the transpose of a vector, but I can define the {U} as 1x100 instead. I have done that but if try to make the multiplication...
  3. urun4fun123

    Modal Stiffness and modal Mass in Ansys?

    Realizing that the modeshapes are normalized to mass by default was very helpfull. Thanks. I addition to this: If you for some reason need to normalize the mode shapes to unity, which I had too, there is a way to. I found out that ANSYS calculates the kinetic energy by E_kin=1/2*[PHI]^T * [M]...
  4. urun4fun123

    Modal Stiffness and modal Mass in Ansys?

    For analysis outside ANSYS i need the Modal marix PHI and the modal stiffness defined by [PHI]^T * [K] * [PHI] the modal mass defined by [PHI]^T * [M] * [PHI] Using substructure and a modal analysis this is easyli done for a simple model by making an output file, and arranging the data in...

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