Saddle Surface

[Alim_Battal1 (Alim Battal)]

Hi everyone,

I want to reproduce this model as a single surface that has height, weight, etc. parameters. Is it possible? Can you help me, please?

Thanks in advance

[René_Corella]

This might not directly answer this particular question but you can look into surfaces generated with expressions - did you see topics like this one:

Monkey Saddle Grasshopper

I’d like to reproduce a Monkey Saddle surface, like this: https://www.dropbox.com/s/onl4zvyfdwo439v/MonkeySaddle.png?dl=0 I’ve found something close, this: https://www.designcoding.net/monkey-saddle-surface/ but it’s not based on a circular shape, that is what I’d like to draw. btw, the above script doesn’t work for me, I think something is missing. Since I’m new to GH, can anyone give me some indications about how to generate this surface? Many thanks

?

[Alim_Battal1 (Alim Battal)]

Yes, I saw Mr. Rene, but this is not my answer. The examples on this page do not allow me to conduct a Millipede analysis or fabricate them with a 3D printer.

[laurent_delrieu]

I am not sure but I think you miss how a surface is represented in Rhinoceros. Globally it is a rectangular grid (UV coordinates). So it will work with a triangle but you will get that

I am not sure it is good for whatever you need.
it is large at right and very distorted on the left.

It is surely better to divide it in 3 or 6 ! Like in the previous post of yours.

[Alim_Battal1 (Alim Battal)]

Actually, I want to do that in Grasshopper since the parameters are important for me to perform a Genetic Algorithm through Wallace X.

[laurent_delrieu]

You lost me !
I understand that Millipede is surely for stress analysis then some optimization with Wallace X, and structure made with some Lattice. Perhaps a sketch of your envisioned workflow could be understood by someone used to this kind of job.

[René_Corella]

Seconding what Laurent is stating, what still is unclear to me is the need for a single untrimmed surface when your analyses don’t strictly require a surface, or do they? My understanding is that you actually need meshes. Could it be that you need the untrimmed surface to perform some other operations you are not revealing here?

[Alim_Battal1 (Alim Battal)]

Yes, you are definitely right. I did the same thing before with different shell geometry. I could share my model but everyone doesn’t use the same plugins with me to open it. But I can share I workflow to tell what I want to do.

[Alim_Battal1 (Alim Battal)]

@René_Corella

what still is unclear to me is the need for a single untrimmed surface when your analyses don’t strictly require a surface, or do they? My understanding is that you actually need meshes. Could it be that you need the untrimmed surface to perform some other ope

@René_Corella

what still is unclear to me is the need for a single untrimmed surface when your analyses don’t strictly require a surface, or do they? My understanding is that you actually need meshes. Could it be that you need the untrimmed surface to perform some other ope

Yes, we can do it with meshes. Since I did something similar with the surfaces, it would be easy for me to work with them. But it is not obligatory

[adel.albloushi]

@Alim_Battal1

this model as a single surface

not possible for your specific case → you’d get undesirable topology

[PeterFotiadis (Pfotiad0)]

@Alim_Battal1

single surface that has height, weight,

See attached.

Surfaces_4D_Monkey.gh (50.1 KB)

BTW: what means weight? Or you want to thicken the BrepFace? (if so see 2nd C# - notify if you want more rational sides [straight cut so to speak]).

[Alim_Battal1 (Alim Battal)]

Wow, it is fascinating. Thanks for the great work.