Grasshopper

algorithmic modeling for Rhino

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Comment by Ahmed Abbas on March 27, 2013 at 4:43pm

Hi Dongyun,

Following links can be helpful to you understand GSA.

http://www.oasys-software.com/products/engineering/gsa-suite.html

http://www.oasys-software.com/gsa-tutorials.html

You if you have further questions ..let me know

Comment by Dongyun Kim on March 27, 2013 at 9:17am

Hi. Ahmed Abbas

 

Diagram which can represent your work.

I want to the status of this structure is represented by the color .

But I don't know how to do.

Could you explain to me that what is GSA?

There is a limit to have only the word GSA search.

 

thanks

 

 

Comment by djordje on March 25, 2013 at 1:50am

Thanks.

Comment by Ahmed Abbas on March 24, 2013 at 7:19pm

And yes in GSA you cannot change the form. It takes the fix geometry but I think there is a plugin, which connects GSA with grasshopper. So in that case you can see constantly what form has influence in GSA optimization.

Comment by Ahmed Abbas on March 24, 2013 at 7:19pm

Initially I imported several forms to GSA for understanding differences, but on a later stage I could not change the form drastically because of very strict requirements of the stadium design. So only thing that I was changing was the height of Catenary arch. The images, which I have uploaded, are for the final form explored with different sizes of space frames and pipe diameter in GSA.

Comment by djordje on March 24, 2013 at 6:23pm

Thank you for the reply.

But you already got the fixed geometry imported from Grasshopper, right?

No additional geometry changes, other than material choice and cross-section optimization were made in GSA?
Or am I wrong?

Comment by Ahmed Abbas on March 24, 2013 at 5:07pm

The shape, form and material also have a large influence in optimization apart from dimensioning. In this particular case, performance was getting better when making form smoother, avoiding large flat surfaces and using catenary arch on sides.

Comment by djordje on March 24, 2013 at 4:38pm

What influence did GSA have on the form optimization (apart from dimensioning the truss members)?

Comment by Ahmed Abbas on March 24, 2013 at 4:01pm

Thanks, at first I created geometry and space frames using grasshopper and later I used GSA suite based on finite element method for analysis.

Comment by djordje on March 24, 2013 at 3:53pm

Nice.
What application did you use for the structural analysis?

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