dForce with mixed materials...

greywolf

So I'd like to dForce https://www.daz3d.com/su-restraint-belt-outfit-for-genesis-9-81-and-8-female with mixed settings:  Rigidity for the metal parts, flexibility for the leather.  I don't seem to be able to make this work quite right.  Never mind that I don't get very far in the simulation before it asplodes.

I guess what I'm looking for is sort of a general mixed-material approach; i.e. I'd like to dForce jeans making the fabric bend, but making the metal parts immutable.  Is there a (reliable) guide for this, specifically?

Richard Haseltine

If that sttiching is modelled then there are probably too many very short edges for it to be viable as a dForce item - if edges are shorter than the minimum dynamic offset then they get stretched out, which means they are then longer than their rest length and so they have extra potential energy which the simulation tries to diffuse away, which means they are shorter than the rest length, so they are stretched, so the simulation diffuses the energy... all that extra energy being added is probably at least a major part of what causes the explosion. You can shorten the minimum offset (in the Surfaces pane) but I suspect the degree of shortening required would let the mesh collapse.

In geenral each surface can have its own simulation settings, so where the emsh is manageable you certainly can have differnt settings for the metal and the leather. You can also use a dForce addon mesh made for the model to stiffen it as required. Making things too stiff will again make diffusing the energy harder, so you might well need to increase the iterations and so on for as table result.