[BMan]

Hi there,

Just following up to see if anyone has any clue as to why UncoupledConstraintCorrection may not be working, or if there are any other collision methods I should try with the set up I have?

Thanks

Brandon

[BMan]

It was the MeshROI mesh that I re-exported.

So I just opened the original .step file in Gmsh and re-exported it as a .stl file again with the same settings as earlier.

At this point in time I still have no idea what caused it, but I will definitely update if I ever figure it out.

Thanks so much again!

[BMan]

Hi,

Thank you so much for all the help, I definitely learnt new things from all of this.

Strangely, however, I just re-exported the mesh again from gmsh and its working now!
I didn’t change anything in the mesh settings, or the mesh itself, I just simply re-exported it (For the 4th time by the way) and it just happens to be working now.

Not sure if it really was just a strange glitch somewhere but for now I suppose it is solved.

Thanks again,

Brandon

[BMan]

Hi,

Apologies for the confusion, I’ll place some images to help describe the issue
(I could not put in more than one link without being labeled as spam so here is an album)

Image Album

There are four chambers to be inflated with air in my design. Here are two images (Images 4 & 5) showing one of the chamber’s inner face. There are no red-square highlighted indices (Which denote fixed constraint points). This is what I intend for all four chambers.

However, in this image (Images 6 & 7) I show the only chamber that strangely does have red-square indices highlighted on its front face. This prevents the chamber from moving.

Here from the top (Image 2) you can see that 3 of the 4 chambers are inflating correctly. The 4th one cannot as the front face is being constrained for no reason.

The surface I am using to create the meshROI can be seen in Images 1 & 3.

In SOFA it wraps around the exterior of the yellow object. It should ONLY be constraining the outside of the yellow object.

I’ve tried seeing if it is a problem with the mesh, however, I cannot see any deformities or oddities within it. Gmsh shows a normal looking mesh.

Thank you so much for the help

Brandon

[BMan]

Hi there,

I tried to put links or embed images into here, however, It has marked me as a spammer.

Is there an alternative way for me to share images?

Thanks

Brandon

[BMan]

Hey there,

My shape is made of tetrahedra yes.

I used MeshROI by creating a new surface mesh, which is 75% working. The 25% that isn’t working seems to be due to some stray constraint indices which aren’t visible on the mesh, or in the sofa scene when I view the triangles.

Any ideas why this could be happening?

Also does MeshROI only work with 2D surfaces?

Thanks,

Brandon

[Author]

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