Hi Page, the answer about collision parameters has a very simple answer: *no, there are no one-fits-all parameters*. If you understand what they are meant for (if not, please refer to docs <https://api.projectchrono.org/development/collisions.html#collision_tolerances>) you can easily understand that they depends on size and speed of the objects at least. The default values are already set to meaningful values, but that's all. Anyway, usually in few iterations one can spot the trade-off that is best for him.
About best settings: *it's difficult to say without knowing your specific system*. In general it's better to use NSC formulation to allow larger timesteps, but this makes sense only if the timestep is not already limited by finite elements or other stiff objects. If using NSC then you can pick either PSOR/BB/APGD, but if you have finite elements you need (the more experimental) ADMM+MKL. For collision detection settings I'm not an expert of Multicore collision, so others might give their opinion. Anyway, I would strongly encourage you to ask yourself: *are all those millions of faces really needed*? Can't the mesh be simplified, at least for collision detection? Even with the best hardware I don't think you will ever be able to reach *real-time with millions of faces*. Dario Il giorno giovedì 18 gennaio 2024 alle 03:02:31 UTC+1 Page ha scritto: > Hi,all > > I found that different simulation scenarios need to adjust different > parameters, such as: > > SetDefaultSuggestedEnvelope(0.03); > > SetDefaultSuggestedMargin(0.001),etc. > > It takes me a long time to adjust the parameters each time I simulate > different scenarios. Is there a common setting that works for most > scenarios? > > My model has many Faces, in order to improve efficiency, I used multicore > module, I found that the model of hundreds of thousands of faces reached > real-time with multi-threading, but the face simulation of 10 million did > not reached real-time, I want to know how to simulate the model of millions > of face quickly, and how to set the fastest simulation. Choose what > solution type, solution model, and related Settings for collision detection. > > Best regards, > > Page > -- 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/5d157c81-68ad-49db-9884-a97017baf00bn%40googlegroups.com.
