The beam element used by Karamba

Replies to This Discussion

Permalink Reply by Hannes Löschke on May 30, 2012 at 5:25am

The karamba beam is a proprietary type. You can use it through karamba components only.

Permalink Reply by Daniel Eika on May 30, 2012 at 5:34am

Thank you!

Is this element and its properties described anywhere? 

Permalink Reply by Hannes Löschke on May 31, 2012 at 2:15am

The Karamba manual is all the information there is.

To find out more, you could disassemble the module. But this wouldn't really help you using Karamba beams in GH, because Karamba components would still be the only components that understand Karamba beams.

Permalink Reply by Daniel Eika on May 31, 2012 at 6:06am

I have looked through the manual briefly, but I didn't see any such description there. With the 'disassemble the module' do you refer to 'Dissassemble Beam' or another component? 

The information I need as an engineer is what degrees of freedom it has, whether or not it includes shear- and axial deformation and preferably information on the interpolation algorithm, or type of interpolation. To be able to use the software it is important to know what is included and not included in its calculations. 

I thank you for all information that is provided!

Cheers,

Permalink Reply by Hannes Löschke on May 31, 2012 at 8:39am

With "disassemble" I mean looking into the code of the components. ;)

Default KARAMBA beams are linear elements that are connected ridgidly at their endpoints. I cannot comment on the internal calculation model, as this is hidden in a separate DLL. The beams have a cross section, an orientation and a material. Numerical precision/Interpolation can be changed in the ModelView component. There you can define the number of facets to model the cross section and the length of subdivisions of the beam elements.

Degrees of freedom are introduced by supporting conditions. By default all beams are "welded". The Pro version has hinges to define connections between beams.

For any deeper insight you should contact the Karamba guys via the group here or their website.

Permalink Reply by Daniel Eika on June 1, 2012 at 5:34am

Thank, you, I will try to contact them :)

Permalink Reply by Daniel Eika on June 1, 2012 at 5:49am

I am sorry for contacting you again, but in ModelView I was not able to change any properties that affected the analysis. Could you send me a picture of where to manage this? 

Again, I thank you for all help :)

Permalink Reply by Hannes Löschke on June 1, 2012 at 7:12am

It's hidden in the render settings. I'm not sure whether this will actually affect the calculation. You get some slightly differnent coloration depending on the number of faces and the subdivisions, but this might be only a display issue.

Permalink Reply by Robert Vier on June 1, 2012 at 7:17am

model view, as the name says, just views a model (analyzed or not). to affect the analysis, you have to change parameters before the actual 'analyze model' component.