Coefficient Of Kinetic Friction Of Sheet Metal

The kinetic friction equation can be written as.

Coefficient of kinetic friction of sheet metal.

The coefficient of kinetic friction is the ratio f w or mg mg or simply m m. F max μ f n. F max frictional force n lb μ static μ s or kinetic μ k frictional coefficient f n applied normal force n lb the frictional force for dynamic friction can be expressed as. Sorry to see that you are blocking ads on the engineering toolbox.

It should be noted that there can be significant differences between static friction typically higher and kinetic sliding friction. Since friction is a force the unit of the frictional force is the newton n. The frictional force for static friction can be expressed as. Materials and material combinations.

In the micro sheet metal roll forming process the kinetic friction is significant indicating the real contact area is affected by the junction growth effect according to brizmer et al. Design resources friction design data. The force of kinetic friction is μk times the normal force on a body. Where f k is the force of kinetic friction μ k is the coefficient of sliding friction or kinetic friction and f n is the normal force equal to the object s weight if the problem involves a horizontal surface and no other vertical forces are acting i e f n mg where m is the object s mass and g is the acceleration due to gravity.

The friction coefficients considered below are for static friction cases where two solid surfaces in contact with each other are resisting relative lateral motion. It is expressed in newtons n. The coefficient of kinetic friction is denoted by the greek letter mu μ with a subscript k. Where μsis the coefficient of static friction and μkis the coefficient of kinetic friction.

Coefficient of friction friction force develops between contacting surfaces of two bodies and acts to resist relative motion between the bodies. Typically steel on steel dry static friction coefficient 0 8 drops to 0 4 when sliding is initiated and steel on steel lubricated static friction coefficient 0 16 drops to 0 04 when sliding is initiated. Based on the data you enter if the ratio m m is exactly equal to the selected μ no motion will occur. The value of μsis generally higher than the value of μkfor a given combination of materials.

To cause motion you need to slightly increase m the hanging mass by 0 1 gram for example.