If you combine two or three metals together, you will get an alloy that usually looks and acts like a metal, with its atoms arranged in rigid geometric patterns. But once in a while, under […]
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 […]
Nature is quantum mechanical, and UCSB/Google researchers are ready to study it with a nine-qubit array and the problem of many-body localization When does a metal stop being metallic? When do atoms start breaking the […]
Researchers of the Max Planck Institute for Polymer Research have investigated friction of liquid droplets on surfaces. A larger force is needed to set in motion stationary droplets than to keep moving droplets in motion. […]
Update 13-02-2022: Currently, a cloud based tool for the calculation described below is available. Please refer to the example given here. In this article, a calculation of contact pressure in a rough contact is discussed. […]
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, […]
Diamond coatings are commonly used today to protect tools and machine components that are subjected to high wear, and thus to extend their service life. It is known that rubbing two dry diamond surfaces together […]
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