Am i being silly or......?

[Samuel Blain]

Hey everyone,

bit of a n00b to houdini and I'm just getting started on dynamics and working through the old digital tutors guides.

now i've use the project files to simply create a rigid body and a static object from geometry imported. everything works great.

then when i try applying it to my own geometry (even if i were to create something as basic as a cube falling onto a grid with the default primitives in houdini) the object appear to fall straight through the object. sometimes there a little bit of interaction, but then falls straight through the static object :S

any ideas, been pulling my hair out for hours, seems so basic for anything to go wrong.

any help much appreciated,

Sam

[Morbid]

Check the collisionmesh of your model. If it still keeps falling through with a good collisionmesh you might want to increase the substeps for the rbdsolver.

[Akabane]

If you are simulating your ground object as a static GRID (so basically a plane), it lacks depth, so most probably that is the cause of your collision inaccuracy.

Instead of increasing the substeps of the solver, you'll want to try first volumeExtruding your static geo before feeding it into DOPS. This way the creation of the SDF will be more smooth and precise.

[Samuel Blain]

Thanks you 2 ,

The geometry wasn't dense enough as morbid said. also by increasing the substeps helped the simulation look solid.

Thanks guys