Rubber Coefficient Of Friction On Steel

The static and kinetic friction coefficient values reference table shown in this article will be helpful for finding the cof values of commonly used materials.

Rubber coefficient of friction on steel.

F f μ n 1. μ static μ s or kinetic μ k frictional coefficient. Ff 0 62 100 lb 62 lb 1 lb 0 4536 kg example car stopping distance a car with mass 2000 kg drives with speed 100 km h on a wet road with friction coefficient 0 2. The coefficient of static friction for steel is around 0 6 0 15 and the coefficient of kinetic friction is around 0 09 0 6.

Compared to steel silicone rubber is 2 to 7 times greater. Static friction is friction between two or more solid objects that are not moving relative to each other. Lower durometers have higher coefficients. Static and kinetic coefficient of friction.

This ratio is based on the standard friction equation. The texture can be used to reduce the co efficient of friction. However it is possible to find tables in the literature for friction coefficients between various materials. The value of μ s is generally higher than the value of μ k for a given combination of materials.

The frictional force can be expressed as. F f frictional force n lb. The coefficient of friction of silicone rubber ranges from less than 0 25 to more than 0 75. The making of steel involves many processes and stages.

The two main frictions used are static friction and kinetic friction. The coefficient of static friction typically denoted as μ s is usually higher than the coefficient of kinetic friction. Dynamic coefficient of friction and restitution. Dry steel dry steel 0 70 0 57 0 80 greasy steel dry steel 0 23 0 16 0 90 greasy steel greasy steel 0 23 0 16 0 90 dry aluminiumdry steel 0 70 0 50 0 85 dry aluminiumgreasy steel 0 23 0 16.

Because of the various factors the coefficient of rolling friction is usually determined. Static friction 7 2 1 friction and coefficient of friction 7 2 2 static friction regime 9. For example static friction can prevent an object from sliding down a sloped surface. 1 2 2 static friction in rubber pad forming processes 3 1 3 static friction and tribological system 3 1 3 1 static friction introduction 3 1 3 2 static friction and tribological system 4 1 4 outline of the dissertation 5 2.

Coefficient of rolling friction. The friction force is the force exerted by a surface when an object moves across it or makes an effort to move across it. Example friction force the friction force of a 100 lb wooden crate pushed across a concrete floor with friction coefficient of 0 62 can be calculated as. Steel is about 10.

Where μ s is the coefficient of static friction and μ k is the coefficient of kinetic friction. References learn more about contacts. Coefficients of friction between materials are best determined through testing. The basic raw materials are coal iron ore limestone and various chemicals.