Karamba3D

1118 members

Description

Karamba3D is a parametric structural engineering tool which provides accurate analysis of spatial trusses, frames and shells.

Current Version: 1.3.2 (July 9 2019)

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Karamba Rigid Diaphragm

by Francesco P

Mar 22, 2018

Hello everyone, as the title suggests.. what's the better way to insert a rigid diaphragm in a building model? i added some really high stiffness springs as cross section of additional boundaries beam but... i was wondering that maybe this additional beam at the same position as the other could cause some problem.

does anyone have a better solution?

Thanks!!

Francesco

  • up

    Karamba3D

    Hello Francesco,

    at the moment (Karamba3d 1.3.0) I recommend the solution you describe above.

    The springs should not be too stiff, since this can make the resulting stiffness matrix ill-conditioned and leads to increased numerical inaccuracies.

    In case you place a very stiff spring in the same position as a beam the stresses in the latter will decrease but this will cause no problems.

    Best,

    Clemens

    Apr 5, 2018

    • up

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