Thank you very much for clarification and your suggestion Radu! On Friday, January 27, 2023 at 10:14:37 AM UTC-4 Radu Serban wrote:
> HJ, > > > > First, please keep these conversations on the Chrono user mailing list. > > > > Well, the statement you quoted is pretty clear. It doesn’t say that a > wheeled vehicle cannot be used with deformable terrain, but just that > certain tire models are not compatible with a deformable terrain. These > tire models (Pacejka, TMeasy, Fiala) were developed and meant for rigid > terrain; and in fact, pretty smooth rigid terrain at that. Note that we > didn’t come up with these tire models, but just implemented them in Chrono. > They are standard tire models that are widely used for **on-road** > vehicle simulations. > > > > As for which Chrono deformable terrain formulation to use, I would not > recommend FEA. That is not what we commonly use, it’s a pretty inefficient > way of modeling soil deformation, and is quite limiting. I would certainly > start with SCM because it’s simpler and fast. If you want something > higher-fidelity, I suggest looking at the continuum representation of > deformable terrain provided through Chrono::FSI (although that will require > an NVIDIA GPU). > > > > As I indicated on the tutorial page you linked to, for now you will have > to stick with a rigid tire or an FEA tire. Again, for simplicity and > efficiency, I recommend using a rigid tire for now. > > > > --Radu > > > > *From:* hj <[email protected]> > *Sent:* Friday, 27 January 2023 14:57 > *To:* Radu Serban <[email protected]> > *Subject:* Private message regarding: [chrono] Wheeled vehicle simulation > on deformable terrain? > > > > Thank you vey much for clarifying Radu. Yes I actually saw the tutorials > but the part that confused me was from > https://api.projectchrono.org/vehicle_terrain.html that is says : > > > > "Note however that these quantities are relevant only for the interaction > with the so-called semi-empirical tire models > <https://api.projectchrono.org/wheeled_tire.html#vehicle_tire_empirical>. > As such, they are not used for the case of deformable terrain (SCM, > granular, or FEA-based) which can only work in conjunction *with rigid > <https://api.projectchrono.org/wheeled_tire.html#wheeled_tire_rigid> or FEA > <https://api.projectchrono.org/wheeled_tire.html#wheeled_tire_fea> tire > models and with tracked vehicles* (as they rely on the underlying Chrono > collision and contact system)." > > > > So I just wanted t omake sure. I think I'll go with FEA or SCM terrain. > > > > Thank you > > > > On Thursday, January 26, 2023 at 3:12:45 PM UTC-4 Radu Serban wrote: > > Yes, of course you can use wheeled vehicles on deformable terrain. > > There are demos in the Chrono distributions that illustrate that. Which > particular deformable terrain formulation are you interested in? > > Finally, would you please let us know where in the tutorials is mentioned > that only tracked vehicles work with deformable terrain?! > > > > --Radu > > > > *From:* [email protected] <[email protected]> *On > Behalf Of *hj > *Sent:* Thursday, 26 January 2023 19:43 > *To:* ProjectChrono <[email protected]> > *Subject:* [chrono] Wheeled vehicle simulation on deformable terrain? > > > > Hello > > > > I've been reading the chrono tutorial about deformable surface modeling. I > was wondering if there is any way I can use Chrono for simulation of > wheeled vehicle on a deformable terrain? It is mentioned in the tutorials > that deformable terrain models only work with tracked vehicles! > > > > > > I appreciate any feedback ! > > > > Thank you > > -- > 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/67c948f8-4d62-43cb-8b2d-bf4e59d0347fn%40googlegroups.com > > <https://groups.google.com/d/msgid/projectchrono/67c948f8-4d62-43cb-8b2d-bf4e59d0347fn%40googlegroups.com?utm_medium=email&utm_source=footer> > . > -- 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/c47bcf3a-db7c-402a-9ecf-54c8bec7bd6dn%40googlegroups.com.
