Simulating Bag of Sand

[Sirens_uk]

@twalewski

late a bag of sand. This has proven quite difficult for me using the deformable bodies in Isaac sim as they have consistent properties though the entire body. I am having difficulty getting the exterior of the bag to be tight, while in the inside can distort and disform. Any advice on how to structure this, even at the USD level, would be greatly appreciated.

I would look at instances check out Ashley’s video here https://www.youtube.com/watch?v=rA7LPiDkdJI

in regards to compute it will be far more manageable. In regards to the bag you probably want to look at fabric sim

Is it possible to simulate fabrics, cloth, garment in Isaac Sim?

Are there ‘tablecloth’ or ‘tshirt’ assets out there? Is the physics of thin, soft materials supported? Thanks!

This would be a start. you might need to make the bag out of two parts then have a certain amount of elastic property to it.