C Channel

Hello community!

I am trying to set a c-channel in karamba. It is the MC 12 x 10.6. I have the values from the AISC excel sheet but was wondering if there is an easier way than to tweak the csv file "Cross Section Values".Would it make sense if i was to extrude the cross section of of the channel along a curve and set it as plates? Any ideas would be amazing. Thanks!

Replies to This Discussion

Permalink Reply by Karamba3D on October 14, 2013 at 11:17pm

Hello Georios,

at the moment karamba does not provide generic C-channels because the cross sections center of shear and center of gravity do not coincide. This means that e.g. a uniformly distributed load acting at the center of gravity induces torsion.

You can define the channel properties (A, I, W,...) via the csv-file. The definition of its shape is independent from those properties (you could for example use an I-profile).

You could analyze the C-channel using shell elements. The results will be correct. Calculation time will however limit you to relatively small structures and the evaluation of resultant cross section forces is not easy.

Best,

Clemens

Permalink Reply by Georios on October 15, 2013 at 9:22am

Clemens,

thank you for you amazing support!

In a further notice I was thinking if it would be more user friendly in the future to implement the AISC .xls as it comes from their website and is constantly updated http://www.aisc.org/content.aspx?id=2868 so you don't have to keep adding sections on the "cross section values" .csv

Thanks again!

Permalink Reply by Karamba3D on October 15, 2013 at 10:55am

Dear Georios,

thank you for the link, but the AISC database contains only US standard sections. Nevertheless it would be useful if it could be directly read into Karamba. I will look at it.

Best,

Clemens

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