coefficient of static friction

[¦kō·ə′fish·ənt əv ′stad·ik ′frik·shən]

(mechanics)

The ratio of the maximum possible frictional force, parallel to the surface of contact, which acts to prevent two bodies in contact, and at rest with respect to each other, from sliding or rolling over each other, to the force, normal to the surface of contact, with which the bodies press against each other. Also known as coefficient of friction of rest.

coefficient of static friction

The coefficient of friction where the force in the direction of sliding is that necessary to initiate sliding.

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References in periodicals archive ?

The torque transmitted by dry friction in a disk clutch before slip occurs is dependent upon the coefficient of static friction between the contacting surfaces, the pressure on the contacting area, and the inner and outer radii.

After slip, the coefficient of static friction changes to the coefficient of kinetic friction.

Building a better fishing reel

Menges and Bangert [5] in the early 1980s were the first to develop a mold suitable to measure the coefficient of static friction in conditions identical to those occurring at the ejection.

Ejection force of tubular injection moldings. Part II: a prediction model

* T 815 Coefficient of static friction (slide angle) of packaging and packaging materials (including shipping sack papers, corrugated and solid fiberboard) (inclined plane method)

New or revised Technical Information Papers (Tips) and test methods

This ratio is called the coefficient of static friction, or fs.

Improving Dobsonian Motion : A remarkable new material and a basic understanding of friction can enhance your viewing experience

The coefficient of static friction is given simply as the tangent of the angle (6).

The development of flow instabilities during the injection molding of multicomponent resins

The coefficient of static friction is the ratio of the frictional force on a body divided by the load force perpendicular to the frictional surface at static equilibrium.

Coefficients of dynamic friction as a function of temperature, pressure, and velocity for several polyethylene resins