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Mike Ciavarella's blog

An Archard-type multiscale theory of hysteretic friction on viscoelastic half-planes, built on exact per-scale viscoelastic contact solutions

Submitted by Mike Ciavarella on

I submitted the manuscript "An Archard-type multiscale theory of hysteretic friction on viscoelastic half-planes, built on exact per-scale viscoelastic contact solutions" for consideration as a Regular Article.

a possible seminar on friction as fracture

Submitted by Mike Ciavarella on
Dear colleague,
 
I am preparing a seminar that I will give at several universities, and I would be glad to offer it to your group as well, either online or, if you are able to invite me, in person.
 
The seminar is about recent theories of friction and frictional contact, viewed as a fracture problem. In the "Griffith friction" picture the edge of the stick zone is treated as a shear crack, and this explains why static friction depends on load, size and roughness. It covers:
 

new theorems and full working closed form equations in dissipation of hertzian and non hertzian elastoPLASTIC contacts subject to oscillating loads

Submitted by Mike Ciavarella on
I have developed recently new theorems and full working closed form equations in dissipation of hertzian and non hertzian elastoPLASTIC contacts subject to oscillating loads: generalisations of melan and koiter theorems to contact 
 

a new book in Contact Mechanics... for beginners!

Submitted by Mike Ciavarella on
would you be so kind as to give me some feedback on a draft version of a book which I intend to publish mainly for undergraduate students in Contact Mechanics.  I am author together with Prof. Antonio Papangelo and PhD student Riccardo Leonetti. If you are kindly available, please answer and I will send you the PDF. 
 
   Preface

a perspective paper on "simple solutions in contact mechanics" for reviewing my 30 years of career so far

Submitted by Mike Ciavarella on

dear Friends and Colleagues


I have been invited to write a review, actually a "Perspective" paper on Contact Mechanics from my personal point of view, which obviously reflects my own experience in my nearly 30 years of research activities. This is a sort of "celebration" therefore, and I would like to make it as simple, complete, and elegant and useful as possible.

Any comment therefore on this preprint would be greatly appreciated.

https://www.researchgate.net/publication/415644414

 

optimal temperature and optimal temperature gradient in tyres?

Submitted by Mike Ciavarella on

Dear Colleagues

I have been playing with a very good student from Berlin with the idea that a temperature gradient along the depth of the tire could help reduce wear significantly. We all know that there is an optimal range of temperature for friction and wear --- much less known is an optimal "temperature gradient". I hope you find this study a good starting point on this idea. Maybe somebody wants to explore how to patent it!

https://lnkd.in/d5nibSYN

Mike

friction and persson's theory for fractal roughness

Submitted by Mike Ciavarella on
dear colleagues
 
  I recommend reading this recent paper
 
Chadha, V., Randolph, A. B., Reifler, K., Jacobs, T. D., & Beschorner, K. E. (2025). Validation of a Multiscale Hysteresis Mechanics Model in Predicting Oily Shoe-Floor Friction Across Surfaces With Varying Finishes. Journal of Tribology, 147(9).