How to set infinite stiffness for the beam element?

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Permalink Reply by Karamba3D on January 15, 2019 at 12:57pm

Hi Simone.

at the moment (Karamba3D 1.3.1) it is not possible to have infinitely stiff beams. You can make them very stiff though by e.g. defining a material with a high value for Young's Modulus.

The problem is, that if a model contains elements with hugely different stiffnesses the associated stiffness matrix which forms the basis for calculating the nodal displacements gets ill-conditioned. This means that the accuracy of the solution deteriorates.

Best,

Clemens