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Frictional contact mechanics print that page

Frictional contact mechanics is concerned with a large range of different scales. At the macroscopic scale, it is applied for the investigation of the motion of contacting bodies (see Contact dynamics ). For instance the bouncing of a rubber ball on a surface depends on the frictional interaction

wikipedia.org | 2011/5/25 9:45:48

Soil mechanics print that page

Leaning_Tower_of_Pisa_JD03092007

concludes with some examples of geotechnical engineering applications of the principles of soil mechanics such as slope stability, lateral earth pressure on retaining walls, and bearing capacity of foundations. Slope instability issues for a temporary flood control levee in North Dakota

Overdrive (mechanics) print that page

Fairey_overdrive

efficiency, the fastest ratio would be a 'direct-drive' or 'straight-through' 1:1 ratio, avoiding frictional losses in the gears. Achieving an overdriven ratio for cruising thus required a gearbox ratio even higher than this, i.e. the gearbox output shaft rotating faster than the original

Critical state soil mechanics print that page

that soils and other granular materials, if continuously distorted (sheared) until they flow as a frictional fluid, will come into a well-defined critical state. At the onset of the critical state, shear distortions occur without any further changes in mean effective stress , deviatoric stress

wikipedia.org | 2010/9/26 19:37:48

Friction loss print that page

Friction loss has several causes, including: Frictional losses depend on the conditions of flow and the physical properties of the system. Movement of fluid molecules against each other Movement of fluid molecules against the inside surface of a pipe or the like, particularly if the inside

wikipedia.org | 2010/9/25 0:28:52

Contact mechanics print that page

Kontakt_Spannungsoptik

Contact mechanics is foundational to the field of mechanical engineering ; it provides necessary information for the safe and energy efficient design of technical systems and for the study of tribology and indentation hardness . Principles of contacts mechanics can be applied in areas such

Force print that page

Aristoteles_Louvre2

insight into the forces produced by gravitation and inertia. With modern insights into quantum mechanics and technology that can accelerate particles close to the speed of light, particle physics has devised a Standard Model to describe forces between particles smaller than atoms. The

Friction print that page

When surfaces in contact move relative to each other, the friction between the two surfaces converts kinetic energy into heat . This property can have dramatic consequences, as illustrated by the use of friction created by rubbing pieces of wood together to start a fire. Kinetic energy is

wikipedia.org | 2011/10/4 13:13:17

Centripetal force print that page

The magnitude of the centripetal force on an object of mass m moving at a speed v along a path with radius of curvature r is: [ 5 ] where a c is the centripetal acceleration. The direction of the force is toward the center of the circle in which the object is moving, or the osculating

wikipedia.org | 2011/8/5 22:48:54

Bicycle and motorcycle dynamics print that page

BikeModel

Bicycles and motorcycles are both single-track vehicles and so their motions have many fundamental attributes in common and are fundamentally different from and more difficult to study than other wheeled vehicles such as dicycles , tricycles , and quadracycles . [ 4 ] As with unicycles ,