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sb526

Vellum Constraints Interactions

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Hi All,

Struggling with my Vellum sim. Have a relatively simple sim that is some fabric suspended on wires.

  • Hair constraint handles the wires, applied to wire Group, pinned to static elements
  • Cloth constraint handles the fabric, applied to mesh Group, no pinned geo
  • Glue constraint applied to all geo
  • Edge length scale parameter on my geo is quite small / shouldn't cause issues

Any advice on why my sim kinda works but doesn't keep points at the end of the wire and mesh in the same position?

Thanks

image.png.32bff1b59573687dabdbebaa5be90643.png

image.thumb.png.c3221864129454f74bde277e8b005002.png

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Could it be because your glue's stretch stiffness is not set high enough so the glue constraint is allowed to stretch meaning that the wires don't look like they are connected to the cloth anymore?

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20 minutes ago, underscoreus said:

Could it be because your glue's stretch stiffness is not set high enough so the glue constraint is allowed to stretch meaning that the wires don't look like they are connected to the cloth anymore?

Hi Martin!

Thanks for your help (again! :D)         

Tried changing glue stiffness from 1 to 1000000 with no luck

I have attached my file in case you or others want to take a look at the setup.

210423-Vellum-Pavilion.hipnc

 

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Had a quick look at I've managed to mitigate most of the issue. Some of it might have come from the fact that some of the constraints were grabbing points further away from where your wire and cloth were meeting meaning that the constraints themself had some length, allowing the wire to move away from the mesh. Other than that I just cranked up the stiffness about as far as it would go. It's not completely fixed, there is still a small gap in there but maybe you could fix that after the sim by moving the end point of the wire to the closest point on the cloth mesh or maybe you could also fix it in sim by continuing to tweak the constraint settings. 

210423-Vellum-Pavilion_mnb.hipnc

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