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Found 3 results

  1. I'm trying to simulate some relatively complex interactions between a squidgy, soft-body tentacle kind of asset and some arbitrary, sort-of-complex geometry. FEM seems like the best way to go about this - I've tried cloth simulation, but but there's little else that easily gives me the really nice volume-preserving properties I get out of the soft-body solver. Overall though I'm still kind of a noob at this, so I'd appreciate completely different suggestions on how to do this My main problem is that no matter what I do, I seem to very easily get tets being stuck on concave geometry. I'm attaching a scene that I've been using as a technical test to try and resolve the issue - it's pretty representative of the issues I get on more complicated scenes, but with faster iteration times. The objective is to get this sea cucumber to pass through a narrow, concave space in an organic, slippery, squishy way. Mostly it behaves correctly, but the problem is that eventually: Some of the tets will get weirdly stuck on the geometry The unfortunate thing is that increasing substeps and collision passes only seems to make this worse - with more collision passes, more tets seem to get stuck, and it becomes harder for them to get unstuck! I don't have any friction on either object, and ideally I'd want them to pass through each other really smoothly. Is there a good way of achieving that? Or anything substantially different I could be doing, to get the same effect? Would love any advice people might have! The scene itself: PenetrationTest_FEM.hip
  2. Worms

    Hi Guys I am trying to make bunch of crawling earthworms using FEM in Houdini. This is my references : https://vimeo.com/53813166 I really need have control on path of each worm. My question is that how should I add path deformation to the simulation. I have tried to add it before tetrahedralizate node, but it affects on the geometry points. Thanks
  3. Hi, I'm wondering how to get more control over a cloth simulation based on the finite element solver. Like adding a velocity field or something or using attractors? The goal is to direct cloth objects that fall by gravity but I want more control of where they fall and how they move. Thanks!
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