Modeling (and) Wear Mechanisms °

Abstract

In all technical fields the highest accomplishment is to formalize knowledge into mathematical (equation) format. This action serves two purposes, namely,

• a. To provide equations that engineers can use in product design, and,

• b. To add purpose and discipline to research. Overall the state of developing equations (modeling) in tribology ranges from very accomplished to primitive. Following is a list of tribology topics, covering that range, in the same order:

• a. Thick fluid film lubrication (hydrodynamic and elastohydrodynamic),

• b. Solid mechanics (elastic and plastic) of contact,

• c. Temperature rise in sliding surfaces,

• d. Surface topography,

• e. Frictional vibrations,

• f. Solid mechanics of visco-elastic contact,

• g. “Wear” by rolling contact fatigue,

• h. Wear by erosion,

• i. Wear by abrasion,

• j. Wear by sliding,

• k. Wear in the “boundary lubricated” state,

• 1. Wear protection by chemical boundary film formation,

• m. Criteria for galling (scuffing, scoring, etc.) in lubricated sliding,

• n. Friction.