Glaciers and Ice Friction Glaciers are comprised of snow accumulated over many years and compressed into large ice masses. Formed when snow remains in a location long enough to form ice, glaciers are unique in […]
Adhesive Wear Analyzed The effects of surface wear reaches across many industries including production, manufacturing, engineering, transportation, roads, and machinery, to name only a few. Given its wide reaching tentacles, it can be surprising to […]
Numerical analysis of adhesion of rough surfaces shows that there exist one unique parameter determining whether the surface is sticky or not. It is well known that neutral bodies attract each other by van der […]
In contact mechanics and tribology it is frequently needed to calculate the contact area between rough surfaces to estimate possible slip, friction, electric conductivity, etc. In this tutorial, it will be shown how to perform […]
How can flies walk on the window glass upside down? How can geckos climb walls and trees? It looks like a simple question, but it is hard to answer. The secret is that flies and geckos, and many other living […]
Here we present an abstract to the paper addressing a simplified model for adhesion between hard rough solids. Abstract In the present note, we suggest a single-line equation estimate for adhesion between elastic (hard) rough […]
By M.Ciavarella, A. Papangelo. Politecnico di BARI, Italy. Adhesion for ‘‘soft’’ bodies shows instabilities like in the simple case of a single sinusoid even in the so called JKR regime (Johnson 1995) which leads to […]
In this article, a calculation of contact pressure in a rough contact is discussed. The calculation is done using a Tribology Simulator software, which is available for download here (its free to use). The simulator […]
The Contact-Mechanics Challenge completed In late 2015 we posed the Contact-Mechanics Challenge. This has now been completed and the winner is—the field of tribology. BECAUSE TRIBOLOGY IS THE STUDY OF contacting bodies in relative motion, […]
Models for the stress-activated growth of tribofilms from ZDDP were modified to include wear. TWO RECENT CUTTING EDGE ARTICLES reported on work that showed the growth rates of tribofilms from ZDDP were accelerated by contact […]
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