What is the role of friction in tribology?

What is the role of friction in tribology?

Friction is a force acting opposite to the direction of relative motion. Friction rises on the interface between bodies, but may also develop within the body. So one of the major challenges of the modern tribology is to find new technologies to reduce friction and increase energy efficiency.

What is friction tribology?

Tribology is the science and application of the principles of friction, wear and lubrication. Tribology involves: Friction – the resistance to motion of one body moving against another. Wear – the loss of material due to motion.

What is lubrication tribology?

Lubricants are typically substances used to reduce friction. Tribology is an interdisciplinary area that studies the reduction of friction between moving parts combining chemistry, physics and engineering disciplines. Lubricants are typically substances used to reduce friction.

What is adhesion theory of friction?

Adhesion is a term relating to the force required to separate two bodies in contact with each other. Bowden and Tabor (1954) showed that the force of static friction between two sliding surfaces is strongly dependent on the real area of contact.

What is tribology and its application?

Tribology is the study of the science and technology of interacting surfaces in relative motion and encompasses the study and application of friction, wear, lubrication and related design aspects.

What is tribology and maintenance engineering?

‘Tribology and Maintenance is the science and technology of interacting surfaces in relative motion. The program gives a professional knowledge of Tribology and Maintenance and its application to engineering and biosystems, which includes an advanced understanding of friction and wear of Engineering and Biosystems.

What is sliding and static friction?

STATIC FRICTION : is the friction exerted on an object at rest. SLIDING Friction: is the friction exerted when an object slides over surface with a working fluid in between the two bodies.

What is static friction example?

Imagine you’re pushing a very heavy box across the floor. You push harder and harder until the box finally starts sliding. The force of static friction is responsible for keeping the box in place. When you push a little, the force of static friction pushes back a little.

What is dynamic friction short answer?

Dynamic (or kinetic) friction is friction that opposes the movement of a body which is already in motion. It’s friction that slows or stops an object from moving.

What is dynamic friction and examples?

When the force acting on the body is greater than the limiting friction, then the body comes into motion. The friction now acting between the surfaces of contact is dynamic friction. Sliding Friction. Rolling Friction.

What do tribo films do in a lubricating system?

Tribofilm, or Tribofilms, are films produced on surfaces and play an integral part in reducing or minimizing Friction and Wear in lubricated systems. Tribofilms are also referred to as boundary lubricant films, boundary lubricating films, tribo-boundary films or boundary films (“Tribofilm,” Wikipedia).

How is adhesion related to friction in a tribo pair?

Force needed to plough asperities of harder surface through softer. In lubricated tribo-pair case, friction due to adhesion will be negligible, while for smoother surfaces under light load conditions deformation component of friction will be negligible. Fig. 2 demonstrates the adhesion (cold weld) between two surfaces.

What is the definition of friction in tribology?

To further understand tribology, it is important to understand the definitions behind friction, wear and lubrication. Friction is the resistance to relative motion between two bodies in contact.

How is the elastic deflection used in tribology?

The resultant equation is given in integral form: Here is the elastic deflection, is the reduced elastic modulus, are the Poisson’s ratio and Young’s modulus of the bodies, is the contact pressure. This equation is used in most of tribological problems, including EHL problems, but also in contact mechanics, friction and wear simulation.