Rubber Coefficient Of Friction Table

N normal force between the surfaces n lb there are at least two types of friction forces.

Rubber coefficient of friction table.

The coefficient depends on temperature and other things. Dry steel dry steel 0 70 0 57 0 80 greasy steel dry steel 0 23 0 16 0 90. The frictional force can be expressed as. F f μ n 1.

However it is possible to find tables in the literature for friction coefficients between various materials. Rubber doesn t have a single constant coefficient of 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. Static and kinetic coefficient of friction.

F f frictional force n lb. 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. μ static μ s or kinetic μ k frictional coefficient. Coefficients of friction between materials are best determined through testing.

F r rolling resistance or rolling friction n lb f c rolling resistance coefficient dimensionless coefficient of rolling friction crf w m a g normal force or weight of the body n lb f m mass of body kg lb a g acceleration of gravity 9 81 m s 2 32 174 ft s 2 the rolling resistance can alternatively be expressed as. The value of μ s is generally higher than the value of μ k for a given combination of materials. Material contact properties table the table below shows material types and their commonly used values for the dynamic coefficient of friction and restitution. For example static friction can prevent an object from sliding down a sloped surface.

A table below shows approximate friction coefficients for various materials. Static friction is friction between two or more solid objects that are not moving relative to each other. Static sliding static sliding. Showing the concept of coefficient of friction.

Where μ s is the coefficient of static friction and μ k is the coefficient of kinetic friction. Friction coefficient table for various material pairs in atmosphere and vacuum see the definition of friction coefficient is shown below the data was collected from various sources 1 2 3. Material 1 material 2 coefficient of friction. All values are approximate and are only suitable for guidance only.

The table of values. References learn more about contacts. The coefficient of static friction typically denoted as μ s is usually higher than the coefficient of kinetic friction. The sliding lubricated values must be used with extreme care.