Understanding FMR, RR, RP, FMD, and FMU in Vehicle Dynamics
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Understanding Vehicle Dynamics: FMR, RR, RP, FMD, and FMU
FMR (Force Moving Resistance): Power required to move machines on a surface, such as through a cut or haul road. The factors determining FMR are:
FMR = RR + RP
Rolling Resistance (RR)
RR (Rolling Resistance): The force opposing the ground at the turn of a vehicle's wheels. To move, the vehicle must counteract this force.
RR = rr x factor pbv
Several factors contribute to RR, the most important being:
A. Internal Friction
Internal friction produced in the powertrain, from the engine to the tires or tracks. Mechanical components like bearings create resistance to movement.
B. Tire Flexion
Flexion of tires increases resistance due to sidewall and tread deformation during spinning. The extent of this... Continue reading "Understanding FMR, RR, RP, FMD, and FMU in Vehicle Dynamics" »