I ran the sim all the way through and it looks correct here. None of the burst effect from the video.
in your video example it almost looks like the particle count suddenly jumps.... Jeff -----Original Message----- From: softimage-boun...@listproc.autodesk.com [mailto:softimage-boun...@listproc.autodesk.com] On Behalf Of Eugen Sares Sent: Tuesday, August 07, 2012 9:44 AM To: softimage@listproc.autodesk.com Subject: Particle collision behaves differently after particle count > 4000 Hi, I've got a simple setup here with "Simulate Bullet Rigid Bodies", where I'm trying to fill a volume with small spherical particles (radius 0,1). Testing 2013SP1. As long as the particle count is below 4000 (for whatever reason), particles tend to penetrate/clump. Suddenly at the frame where the count reaches 4000, all particles push themselves out of their neighbours at once, then simulation continues normally, with no penetrations. A bug? I didn't touch any simulation range settings. Video (possibly not converted yet): https://vimeo.com/47089050 Scene: http://www.sendspace.com/file/c0xke5 Thanks a lot! Eugen