Hi all, I'm focusing on the demo of a tire test rig on a SCM terrain, in particoular on the forces exchanged between tire and ground. While examining the longitudinal tire force as a function of longitudinal slip, I observed that the tire force shows a negative value when the longitudinal slip is zero. Could anyone explain why this occurs? How is this handled in Chrono? Is there any paper I could consult on this topic? Tahnk you in advance for any help! Davide
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