마찰계수측정
- 최초 등록일
- 2013.08.05
- 최종 저작일
- 2010.07
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목차
4.1 Introduction
4.2 Quantitative laws of sliding friction
4.3 The origin and magnitude of the friction force
4.4 Criticisms of the adhesion theory
4.5 Other contribution to the friction force
4.6 Friction of metals
4.7 Frictional properties of uncontaminated metals in air
4.8 Frictional properties of outgassed metal surfaces
4.9 Friction of nonmetals
4.10 Rolling friction
4.11 Laws of rolling friction
4.12 The temperature of sliding surfaces
4.13-15
4.16 The relation between temperature and friction
4.17 Stick-slip
4.18 Prevention of stick-slip
4.19 The measurement of friction
4.20 Friction coefficient values
4.21 Some consequences of friction
본문내용
4.1 Introduction
Friction is the resistance to motion that exists when a solid object is moved tangentiallywith respect to the surface of another that it touches, or when an attemptis made to produce such motion.
The importance of friction : 마찰에대한간단한이해로5% of GNP에해당하는손실을절감
1. Reduction of friction
2. The presence of friction
3. Maintaining friction constant within narrow limits
4. Friction-caused oscillations, Friction induced vibrations
-Friction: 고체가접촉하고있는다른물체에대해접선방향으로움직일때
생기는저항력
-Friction에관련된문제
1. Reduction of friction
개선된설계, 적합한접촉재질, 좋은윤활물질의적용
2. Presence of friction
마찰이요구되는경우에충분한크기의마찰유지(ex. 운전, 못, 나사등)
3. Maintain friction
일정한범위의마찰유지(ex. 자동차브레이크, 정밀공구)
4. Friction-caused oscillation
현악기, metal-rolling
4.2 Quantitative laws of sliding friction
Friction
1. In any situation where the resultant of the tangential forcesis smaller than some force parameter specific to that particular situation,the frictionforce will be equal and opposite to the resultant of the appliedforces and no tangential motion will occur.
2. When tangential motion occurs, the friction force always actsin a directionopposite to that of the relative velocity of the surfaces.
참고 자료
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