Hey Radu, Thanks for the response! I will play around with the Mohr friction and see how it affects my simulations.
-Klaus On Wednesday, 22 June 2022 at 15:00:55 UTC+3 Radu Serban wrote: > Hi Klaus, > > > > You are not doing anything wrong. > > Indeed, the coefficient of friction specified on an object that interacts > with SCM terrain is currently not taken into account. This is because the > friction is embedded in one of the SCM terrain parameters (Mohr_friction, > passed in degrees to SCMDeformableTerrain::SetSoilParameters, and used in > the Janosi-Hanamoto formula for tangential forces). > > > > Try varying that value and see if you obtain the desired effect. > > > > I thought about also taking into consideration the coefficient of friction > specified on the impactor object (e.g., a rigid tire) and may do that in > the future. Note however that that would have to be used in conjunction > with two different sets of SCM parameters (for soil-soil and tire-soil > interactions) and with the ability in the Chrono SCM implementation of > optionally specifying both (see > https://github.com/projectchrono/chrono/blob/develop/CHANGELOG.md#changed-scm-deformable-terrain-improvements > ) > > > > --Radu > > > > *From:* [email protected] <[email protected]> *On > Behalf Of *Klaus Kivekäs > *Sent:* Tuesday, June 21, 2022 4:15 PM > *To:* ProjectChrono <[email protected]> > *Subject:* [chrono] SCM and contact friction > > > > Hey, > > I have been looking into using the SCM deformable terrain and rigid mesh > tire models in my tractor-related research. I am using the dev branch of > Chrono, currently on a version downloaded on June 7. > > Is it possible to somehow change the coefficient of friction used in the > contact force calculations between the tire and soil when using SCM and > RigidMeshTire? Changing the friction value of the tires in their JSON file > or using a FrictionFunctor don’t seem to do anything even though both work > when using a rigid terrain. Am I possibly doing something wrong or is this > intended behavior? > > Thanks, > Klaus > > > > -- > 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/f9623d0e-b726-4f32-bc73-c7dc568de462n%40googlegroups.com > > <https://groups.google.com/d/msgid/projectchrono/f9623d0e-b726-4f32-bc73-c7dc568de462n%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/c7a4bf91-078e-46c7-9cec-f9120adb9f81n%40googlegroups.com.
