Inflation - Grasshopper Help

Hello, this is the second post I have made regarding my issue. I have not figured out a solution, but I am essentially trying to inflate a non-solid cylinder with anchors being the edges of the cylinder and three lines that divide the cylinder into 3 equal parts. The closest example of what I am trying to achieve is from this youtube video: https://www.youtube.com/watch?v=oMHWrMLtPuc

However, when I “run” the solver, the mesh basically just blinks and then there is nothing there. When I hit “reset” you begin to see something happen especially if you put the pressure panel at a low number (the mesh basically blows up in some chaotic manner). I could really use some help as I really don’t know how to get to a solution. All I am really looking for is the fragments of the cylinder to inflate in their perpendicular directions. I have drawn a diagram of this to show what I am trying to achieve:
Adobe Scan Apr 7, 2025.pdf (153.4 KB)



Inflate_01.gh (11.2 KB)
Inflate_01.3dm (80.2 KB)

The pressure goal says ‘A force normal to each triangle…’ so I think it’s a good idea to use meshes with triangles.

I replaced the refine mesh component with TriRemesh. I can’t remember if you have this option available in Rhino 7.

Inflate_01_triremesh.gh (20.1 KB)

PS: not sure if the second topic was necessary. Anyway, if you do that again, put a link to the other topic so if someone is helping you they don’t need to go to your profile and look for the topic.

Inflate_01.gh (66.5 KB)
Seems like the tolarence is too low, 0.001 is ok.

This is literally perfect thank you so much. I definitely did not know about the tolerances or what the different values for pressure really meant. I want to keep exploring this topic though. Would it be possible to have the inflated mesh conform more to the wireframe (which would be piped) that I have for it? For example, could the mesh act like a bag and “blow-up” so that it squishes against the wireframe and even the other fragments of the mesh? Sort of like this drawing?:
Adobe Scan Apr 7, 2025 (1).pdf (220.2 KB)

Are you aware you can copy paste a screenshot into a post? It would be easier to look at than a pdf which needs to be downloaded.


Thanks for pointing that out, here is the screenshot of the concept