Grasshopper

algorithmic modeling for Rhino

Hey everyone!

I have a pretty simple question:

If I have my mesh which I analyse as a shell in karamba, is there a way of obtaining the information of how much stress forces act upon each seperate point/vertex of the analysed mesh?

Best,

Cristina

Views: 681

Replies to This Discussion

In case the problem persists please send me a short definition which reproduces the issue.

Best,

Clemens

Hi Marinella,

the stress results are nearly the same: From the length of the stress vectors one gets a maximum of 0.039kN/cm². These vectors are evaluated at the center of each element. The maximum stress at the nodes is 4.41e-02kN/cm² which translates to 0.044kN/cm².

The difference of 10% is due to the fact that the latter values are calculated by interpolating the element results from the centers to the nodes.

Best,

Clemens

Thanks a lot for the answer Clemens.

For the purpose of the structural analysis, which one of the values is more reliable?

Thanks,

Marinella

They are both reliable. When you refine the mesh the two values should converge in most cases. Further information on this topic can be found in the excellent text book 'Plates and FEM: Surprises and Pitfalls' by Johan Blaauwendraad.

Best,

Clemens

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