What does factor of adhesion mean?
Definitions for factor of adhesion
fac·tor of ad·he·sion
This dictionary definitions page includes all the possible meanings, example usage and translations of the word factor of adhesion.
Wikipedia
factor of adhesion
An adhesion railway relies on adhesion traction to move the train. Adhesion traction is the friction between the drive wheels and the steel rail. The term "adhesion railway" is used only when it is necessary to distinguish adhesion railways from railways moved by other means, such as by a stationary engine pulling on a cable attached to the cars or by railways that are moved by a pinion meshing with a rack. The friction between the wheels and rails occurs in the wheel-rail interface or contact patch. The traction force, the braking forces and the centering forces, all contribute to stable running. However, running friction increases costs by requiring higher fuel consumption and by increasing the maintenance needed to address fatigue (material) damage, wear on rail heads and on the wheel rims and rail movement from traction and braking forces.
Wikidata
Factor of adhesion
In railroad engineering, the factor of adhesion of a locomotive is the weight on the driving wheels divided by the starting tractive effort. A common rule is that for a steam locomotive a good factor of adhesion equals or exceeds 4, but not by too much. A locomotive with a factor of adhesion below 4 will have a tendency to wheelslip, especially on starting, and will require careful driving and lots of sand in slippery conditions. A factor of adhesion greater than 4 is simply excess weight or insufficient power. The number 4 physically corresponds to the inverse of the coefficient of static friction for steel on steel. Diesel and electric locomotives can work with a much lower factor of adhesion than a reciprocating steam locomotive because their power is applied smoothly, unlike the latter's pulsed power delivery. The pulses can, to some extent, be smoothed in a steam locomotive by fitting 3 cylinders or 4 cylinders. A 4-cylinder engine with cranks at 180 degrees will deliver similar pulses to a 2-cylinder engine. Alternatively, a geared steam locomotive can deliver a smooth torque similar to that of a diesel or electric locomotive.
Numerology
Chaldean Numerology
The numerical value of factor of adhesion in Chaldean Numerology is: 8
Pythagorean Numerology
The numerical value of factor of adhesion in Pythagorean Numerology is: 6
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"factor of adhesion." Definitions.net. STANDS4 LLC, 2024. Web. 24 Apr. 2024. <https://www.definitions.net/definition/factor+of+adhesion>.
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