Tire Traction Breakaway Equation and Calculator

Mechanics And Machine Engineering and Design

Tire Traction Breakaway Equation and Calculator

Tire Traction Breakaway Equation and Calculator Traction, or tractive force, is the force used to generate motion between a body and a tangential surface, through the use of dry friction, though the use of shear force of the surface is also commonly used.

Symbols used:
µo=coefficient of adhesion
Rw =load on wheel considered


The horizontal force at which slipping occurs:


Fm = µo Rw

Typical values coefficient of friction

Description
µo
Concrete/asphalt, dry
0.8 - 0.9
Concrete/asphalt, wet
0.4 - 0.7
Gravel, rolled, dry
0.4 - 0.7
Gravel, rolled, wet
0.6 - 0.7
Clay, dry
0.3 - 0.5
Sand, loose
0.5 - 0.6
Ice, dry
0.2
Ice, wet
0.1
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