I am simulating a single feather in vellum.

The entire workflow works fine.

Only the shaft is even more limp than the barbs when simulating, no matter how high
I set the stiffnesses of stretch and bend.

Any ideas on how to make the shaft stiff in a vellum sim?

What am I missing?

Thanks so much!

I know vellum doesn't like too many divisions or stiffness becomes impossible to enforce. The only way to increase stiffness is to increase iterations or reduce subdivisions.

Thanks! I know that.

I was specifically referring to the feather workflow.
And treating the barbs differently than the shaft.
Which just makes sense.

You probably have something like 500+ points on the shaft curve if you're trying to simulate the full feather. There's not much of a way around that because you need the barbs connected.

But you will always get a floppy curve with that many points.

As a workaround, you could copy the shaft curve and resample that to 8-20 points, set up constraints on that and also constrain it to the real shaft curve. This could stabilize the whole feather and require fewer constraint iterations. I haven't tested this though. Make sure collisions between those overlapping curves aren't computed.

KaiStavginski
You probably have something like 500+ points on the shaft curve if you're trying to simulate the full feather. There's not much of a way around that because you need the barbs connected.

But you will always get a floppy curve with that many points.

As a workaround, you could copy the shaft curve and resample that to 8-20 points, set up constraints on that and also constrain it to the real shaft curve. This could stabilize the whole feather and require fewer constraint iterations. I haven't tested this though. Make sure collisions between those overlapping curves aren't computed.

Hello Kai!

Thanks for your quick answer.
That sounds like something I could do.
But you get the idea?

Maybe something for an update?

At least a shaft group output, maybe on the feather interpolate?

Best regards!

sim a curve with less and then you can wiredeform the one with the feather.

pelos
sim a curve with less and then you can wiredeform the one with the feather.

I'm sorry, I didn't understand
that.

Would be happy if you could be more specific.

Thanks so much!