Help Cloth has stretchy behaviour with stiff settings

[Andreia Mendes]

Hi!

Quite the opposite: your settings will yield rather stretchy cloth. Specifically, your compliance is set to 0.01 N/m2 which is extremely high (for comparison, the compliance of rubber is 1x10^-6)

Keep in mind that compliance is the inverse of stiffness: a compliant material is stretchy, a non-compliant material (that is, a material with zero compliance) is as stiff as possible given the current solver settings.


Don't tweak iterations unless you need to balance out cost with other constraint types. As mentioned in the manual, the ideal setup is to set all iteration counts to 1 and increase the amount of substeps instead. Substeps are far more efficient at improving simulation quality than iterations.


As a side note, I see you're using surface collisions with a considerably dense mesh. Such use case is specifically discouraged in the manual as it will lead to very costly collision detection and no noticeable benefit.

kind regards,

Hello, thank you for the quick response!
I have attempted your suggestions:

I changed the stretch compliance to 0, however it seemed to make no difference in the simulation. The swimsuit was just as stretchy.

I remade the cloth blueprint to have less particles, but the swimsuit now compressed so much it became a waist sash! Changing back the stretch compliance to 0.01 doesn't change this.