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Trying to simulate sand

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intrigued
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Joined: Aug. 2015
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Hello everyone, I have a simple scene with a hour glass I downloaded. I turned the glass into a collider and put a sphere inside and turned it into dry sand. When I simulate it, the sand “bust” out of the glass and I can't figure out why. I thought maybe holes in the geo or the thickness. So I extruded the geo and used a facet and still no luck. If someone can help, thank you very much. Enjoy your day.

Attachments:
hourglass_01.hipnc (2.5 MB)

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robsdesign
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Joined: March 2015
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Hi, you could try surface collisions instead, I've attached a hip file. I've also added a switch to remove some intersecting geometry.

Attachments:
hourglass_01_Surface.hipnc (1.9 MB)

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intrigued
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Thanks!. Works perfect. Can I pick your brain on another topic. I'm trying to fracture the glass at the bottom with a marble hitting it, but I'm not having any luck. I'm not sure on the right attempt/order to do it. I was thinking to fracture the glass, cache it, then use it as a static again so the sand can flow out of it. I have the section grouped(ToFracture).

Attachments:
hourglass_03_RnD_fracture.hipnc (5.3 MB)

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