Hi Giovanni, It's hard to say without seeing the script and the rendering. Since you are doing a compression test and DEM is penalty/penetration based, it could be just that there is so much compression that the penetration is too big, so the particles appear to be phasing through the mesh (note that if *E* is low and the particles are relatively large, then having visible phasing-through can be normal). It could also be that the particles are somehow under a large load (say, being compressed by an invisible boundary without the user's knowledge) and it forces the particles through the mesh. Or maybe the mesh is not oriented correctly (triangle facet normal direction) so the particles approach it from the inner side, and then phase through.
If you put here a rendering of the problem, and if you can, show the script you are using, it should be easy to diagnose. Thank you, Ruochun On Wednesday, July 19, 2023 at 3:53:15 PM UTC-5 Giovanni Bianchi wrote: > Hello everyone! > > I am simulating the compression of a granular material with DEM-Engine, > and in some cases it seems that some particles pass through the mesh > boundary. > I adapted the mixer demo to my case without changing anything in the > contact detection parameters. > > What am I doing wrong? > > Giovanni > -- You received this message because you are subscribed to the Google Groups "ProjectChrono" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To view this discussion on the web visit https://groups.google.com/d/msgid/projectchrono/1fefd045-d4a0-4ec4-bcb9-5757b09c0ccbn%40googlegroups.com.
