Coefficient of friction for given hauling capacity of locomotive Solution

STEP 0: Pre-Calculation Summary
Formula Used
Coefficient of Friction for locomotive = Hauling Capacity of a Locomotive/(Weight on driving axle*No of pairs of driving wheels)
μ = Hc/(w*n)
This formula uses 4 Variables
Variables Used
Coefficient of Friction for locomotive - coefficient of friction for locomotive between the driving wheels and the rails depends largely upon the two factors called condition of the rail surface and speed of the locomotive.
Hauling Capacity of a Locomotive - (Measured in Kilogram) - Hauling Capacity of a Locomotive is the maximum amount of weight that can be filled and carried beyond regular capacity.
Weight on driving axle - (Measured in Kilogram) - Weight on driving axle is the weight transmitted by several wheels attached to that axle to the surface on which the locomotive rests.
No of pairs of driving wheels - No of pairs of driving wheels in train usually vary from 260 to 800.These driving wheels are driven by traction motor.
STEP 1: Convert Input(s) to Base Unit
Hauling Capacity of a Locomotive: 12000 Kilogram --> 12000 Kilogram No Conversion Required
Weight on driving axle: 20 Tonne --> 20000 Kilogram (Check conversion here)
No of pairs of driving wheels: 3 --> No Conversion Required
STEP 2: Evaluate Formula
Substituting Input Values in Formula
μ = Hc/(w*n) --> 12000/(20000*3)
Evaluating ... ...
μ = 0.2
STEP 3: Convert Result to Output's Unit
0.2 --> No Conversion Required
FINAL ANSWER
0.2 <-- Coefficient of Friction for locomotive
(Calculation completed in 00.014 seconds)

Credits

Created by Bhuvana Shankar
Parisutham Institute of Technology and Science (PITS), THANJAVUR
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The National Institute of Engineering (NIE), Mysuru
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5 Traction and tractive resistances Calculators

Total Train Resistance
Total Train resistance = 0.0016*Weight of Train+0.00008*Weight of Train* Speed of train+0.0000006*Weight of Train*Speed of train^2 Go
Coefficient of friction for given hauling capacity of locomotive
Coefficient of Friction for locomotive = Hauling Capacity of a Locomotive/(Weight on driving axle*No of pairs of driving wheels) Go
Hauling Capacity of Locomotive
Hauling Capacity of a Locomotive = Coefficient of Friction for locomotive*Weight on driving axle*No of pairs of driving wheels Go
Resistance Due to Gradients
Resistance due to gradients = Weight of Train*(Slope Percentage/100) Go
Wind Resistance
Wind resistance = 0.000017*Exposed area*Velocity of wind^2 Go

Coefficient of friction for given hauling capacity of locomotive Formula

Coefficient of Friction for locomotive = Hauling Capacity of a Locomotive/(Weight on driving axle*No of pairs of driving wheels)
μ = Hc/(w*n)

Coefficient of Friction With Respect to Rail Surface

1. Very wet or very dry - 0.25
2 .Greasy-0.03
3. Average dampness - 0.166
4. In Tunnels and frosty weather - 0.125

How to Calculate Coefficient of friction for given hauling capacity of locomotive?

Coefficient of friction for given hauling capacity of locomotive calculator uses Coefficient of Friction for locomotive = Hauling Capacity of a Locomotive/(Weight on driving axle*No of pairs of driving wheels) to calculate the Coefficient of Friction for locomotive, The Coefficient of friction for given hauling capacity of locomotive depends on speed and rail surface.It increases with decrease in speed and varies from 0.1 at high speeds to 0.2 at low speeds. Coefficient of Friction for locomotive is denoted by μ symbol.

How to calculate Coefficient of friction for given hauling capacity of locomotive using this online calculator? To use this online calculator for Coefficient of friction for given hauling capacity of locomotive, enter Hauling Capacity of a Locomotive (Hc), Weight on driving axle (w) & No of pairs of driving wheels (n) and hit the calculate button. Here is how the Coefficient of friction for given hauling capacity of locomotive calculation can be explained with given input values -> 0.2 = 12000/(20000*3).

FAQ

What is Coefficient of friction for given hauling capacity of locomotive?
The Coefficient of friction for given hauling capacity of locomotive depends on speed and rail surface.It increases with decrease in speed and varies from 0.1 at high speeds to 0.2 at low speeds and is represented as μ = Hc/(w*n) or Coefficient of Friction for locomotive = Hauling Capacity of a Locomotive/(Weight on driving axle*No of pairs of driving wheels). Hauling Capacity of a Locomotive is the maximum amount of weight that can be filled and carried beyond regular capacity, Weight on driving axle is the weight transmitted by several wheels attached to that axle to the surface on which the locomotive rests & No of pairs of driving wheels in train usually vary from 260 to 800.These driving wheels are driven by traction motor.
How to calculate Coefficient of friction for given hauling capacity of locomotive?
The Coefficient of friction for given hauling capacity of locomotive depends on speed and rail surface.It increases with decrease in speed and varies from 0.1 at high speeds to 0.2 at low speeds is calculated using Coefficient of Friction for locomotive = Hauling Capacity of a Locomotive/(Weight on driving axle*No of pairs of driving wheels). To calculate Coefficient of friction for given hauling capacity of locomotive, you need Hauling Capacity of a Locomotive (Hc), Weight on driving axle (w) & No of pairs of driving wheels (n). With our tool, you need to enter the respective value for Hauling Capacity of a Locomotive, Weight on driving axle & No of pairs of driving wheels and hit the calculate button. You can also select the units (if any) for Input(s) and the Output as well.
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