Class 4 cross sections

Replies to This Discussion

Permalink Reply by Wojciech Radaczyński on November 30, 2018 at 2:49pm

Hey,

maybe mine approach would be helpful:

- if you need only cross sections with 1-3 classes, you can get the class from "Utilization" and then make "if" statement, so further in the optimalization only 1-3 classes will be an option (for Galapagos for example)

- if you need class 4 you can make your own calculations in Grasshopper. Personally I think making your own utilization calculations in Grasshopper is always better option, because using only Utilization component can make you overlook proper buckling length for element.

Best regards :)

wr

Permalink Reply by Silas Wettendorff Pedersen on December 3, 2018 at 2:30pm

Hey,

I think sorting out class 4 sections is the best approach for me.

Would you also consider making your own utilization of class 4 cross sections when you have a big grid-like structure.
I mean will it be possible to keep track of the effective areas for each member together with the different section-forces and orientations?

Kind regards

Silas

Permalink Reply by Wojciech Radaczyński on December 3, 2018 at 2:54pm

Hey,

in structures with a lot of members I would just sort out 4 class like you said, I did the same thing in my thesis. But it's my opinion, and I'm far from being expert :)

Best regards :)
wr

Permalink Reply by Silas Wettendorff Pedersen on December 3, 2018 at 3:46pm

Hey,

Im no expert either, so it is going to be that way :)

Best regards 

Silas

Permalink Reply by Karamba3D on December 5, 2018 at 2:34am

Hello Silas,

Karamba3D 1.3.1. does not calculate reduced effective cross section properties for class 4 sections. Thus one should stay with classes 1 to 3.

Best,

Clemens

Permalink Reply by Silas Wettendorff Pedersen on December 5, 2018 at 5:10am

Hey,

Thanks for the reply, I will stay in class 1 to 3. 

Best,

Silas