Grasshopper

algorithmic modeling for Rhino

Comment by Llordella Patricio on October 7, 2014 at 1:27pmDelete Comment

8-10-14losa.gh
hello, I'm working on this model. I would like to know how to connect the slab with beams, so that the whole work as one element.

Thank you


Comment by karamba on October 7, 2014 at 11:27pm

Hello Patricio, divide the beams in such a way that each boundary vertex of the shell becomes an endpoint of a beam segment.

Best, Clemens

Comment by Llordella Patricio on October 8, 2014 at 8:30amDelete Comment

Hi Clemens,

I did what you suggested but now assemble element doesn´t work properly. Could you please tell me how to fix it? Thanks in advance, Patricio

8-10-14losa%20cadena.gh

Comment by karamba on October 8, 2014 at 11:59am

Hi Patricio, 
if you flatten the 'Elem'-input at the 'Assemble'-component the definition works. The triangular shell elements have linear displacement interpolations whereas the beam deflections are exact. In order to get correct results you should refine the shell mesh.

Best, Clemens

Comment by Llordella Patricio on October 9, 2014 at 8:35amDelete Comment

Hello, succeeds in creating the mesh to the slab, and built the beam segment, but when I see the deformations are not expected because the beam is deformed as the slab.

Thanks for the help

PS: maybe I'm using the program for a type of structure that is not the most appropriate, as I saw in the examples of other structures. But this type of structure is that students taught

best regards

Patricio

9-10-14%20Example%201.gh

Comment by karamba on October 9, 2014 at 10:46am

You could use the 'Mesh Edges'-component to retrieve the naked edges and turn them into beams - see attached file:91014Example1_cp.gh

Best regards,

Clemens

Comment by Llordella Patricio on October 15, 2014 at 3:41pmDelete Comment

Dear clemens

I was doing a rough estimate of the deformation, and I can not achieve the same result with Karamba. 
When I make a rough estimate of the result with Karamba beams and mine are very similar, I think the problem is when I connect the shell, because there are no similar results.

I sent the GH file, and an image of the calculation

The structure is concrete 
The result I get is 0.58cm

thank you

Patricio

15-10-14%20Example.gh

Comment by karamba yesterday

Dear Patricio,

try to increase the number of shell elements. As mentioned in the manual they are linear elements. A mesh that is too coarse leads to a response which is stiffer than the real structure. 

Best,

Clemens

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