Tire forces

[Davide]

Hi all,

I am working on the demo "demo_VEH_Multicore_TireTestRig" and I was wondering what kind of forces the function "ReportTireForce" gives as a result: are they traction forces or tire-ground interaction forces? 

Moreover, I plotted the force along x and it shows an irregular behaviour (it seems affected by noises) and I am not fully understanding the reason. Someone could help me?

Thank you in advance.

Davide

[Davide]

As far as torque is concerned, what is the torque computed by the function "ReportTireForce"? Is it the same as Fx (force get by "rig. ReportTireForce()" times the radius of the tire?

[Davide]

Going on with further simulations, I analyzed the behaviour of the tire force Fx as function of the longitudinal slip, shown in the image below. Could someone explaining me the reason why Fx takes only negative values? What am I missing? 

Thank you in advance!

[Davide]

Bouncing back to this topic, could someone give some hints?