Buckling of an irregular lattice-shell

I am trying to do buckling analysis of an irregular lattice shell structure in Karamba, but failed.

The first attached file (Buckling_Irregular_Shell_1.gh) shows buckling analysis, but the similar model in the second atached file (Buckling_Irregular_Shell_2.gh) with little modification of irregularity shows no buckling analysis.

I would appreciate if someone check the attached .gh files and help me to fix the second file?

Thank you so much !

Regards,

Rian

Attachments:

Buckling_Irregular_Shell_1.gh, 35 KB
Buckling_Irregular_Shell_2.gh, 39 KB

Replies to This Discussion

Permalink Reply by Robert Naguschewski on November 12, 2016 at 3:30am

Hi Rian,

I don't have the Python script interpreting stuff in my Grasshopper, but I guessed that you only used it to choose the lowest nodes of your model for the supports. I put in some components to get the three support points and the buckling analysis works in both models. Don't know if this is what you need, but have a look in the attached file.

Cheers,

Rob

Attachments:

Buckling_Irregular_Shell_2.gh, 34 KB

Permalink Reply by Iasef Md Rian on November 12, 2016 at 3:53am

Dear Rob,

I solved it by fixing all 3 directions and rotations (especially Rz) at supports. By the way, thank you so much. Your solution has offered me a new component which decides supporting nodes.

Regards,

Rian

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