Amontons' Rules of Friction Formulated 300 Years Ago
نویسندگان
چکیده
منابع مشابه
Multiscale Surfaces and Amontons’ Law of Friction
The theories of Archard, Greenwood, and more recently Persson all predict that the area of actual contact between two rough surfaces will be approximately proportional to the applied normal force, though these authors make different assumptions and approach the problem from different points of view. Here we discuss the nature of these approximations and show that the common conclusion follows f...
متن کاملSystematic Breakdown of Amontons' Law of Friction for an Elastic Object Locally Obeying Amontons' Law
In many sliding systems consisting of solid object on a solid substrate under dry condition, the friction force does not depend on the apparent contact area and is proportional to the loading force. This behaviour is called Amontons' law and indicates that the friction coefficient, or the ratio of the friction force to the loading force, is constant. Here, however, using numerical and analytica...
متن کاملNon-Amontons behavior of friction in single contacts.
We report on the frictional properties of a single contact between a glassy polymer lens and a flat silica substrate covered either by a disordered or by a self-assembled alkylsilane monolayer. We find that, in contrast to a widely spread belief, the Amontons proportionality between frictional and normal stresses does not hold. Besides, we observe that the velocity dependence of the sliding str...
متن کاملSimple Microscopic Theory of Amontons’ Laws for Static Friction
A microscopic theory for the ubiquitous phenomenon of static friction is presented. Interactions between two surfaces are modeled by an energy penalty that increases exponentially with the degree of surface overlap. The resulting static friction is proportional to load, in accordance with Amontons’ laws. However the friction coefficient between bare surfaces vanishes as the area of individual c...
متن کامل40 Years Ago
always voice his unhappy or distressing thoughts, and it is often most difficult to recognise the way he is tending, or having recognised it to induce him to seek the help and advice that would save him. And even when his condition has been realised and the man himself persuaded to have treatment, the difficulties in the ^ay of obtaining it for him are often insuperable. Outside of London and a...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: MRS Bulletin
سال: 1999
ISSN: 0883-7694,1938-1425
DOI: 10.1557/s0883769400053756