# Mike Ciavarella's blog

## top italian scientists

I just read in the news about 3 italians who won the prestigeous CASE award.  They are relatively young, and I see do not have a very high H-index.  I think there was a discussion in Imechanica years ago about the fact that H-index is still an experimental data point where we don't know how else to judge a scientist.

## Snaking bifurcations in a self-excited oscillator chain with cyclic symmetry

Who is interested in non-linear dynamics of friction may find this nice.

Volume 44, March 2017, Pages 108–119

## remove an entry

dear imechanica

I wanted to remove one entry but I don't seem to be able to remove entries any longer like it was possible before --- how can I do that?

## Fracture Mechanics implications for apparent static friction coefficient in contact problems involving slip-weakening laws

Fracture Mechanics implications for apparent static friction coefficient in contact problems involving slip-weakening lawsA. PapangeloM.

## rate-state dependent friction in ANSYS

Dear collegues

a quick question:- I am playing with continuum models of Contact (Hertz, Westergaard and so on) and friction laws. However, I prefer for my students to use ANSYS FEM code. In Ansys there is standard Coulomb, rate-dependence but not rate-state (unless one codes some user subroutines). See

https://www.sharcnet.ca/Software/Fluent14/help/ans_ctec/Hlp_ctec_realkey...

## The African Conference in Tribology will be held at the Ecole Nationale des Sciences Appliquées (National School of Applied Scie

Call for papers – ACT 2014

## Is wear law really Archard's law (1953), or Reye's law (1860) ???

In 1860 the mathematician and geometer Reye proposed a simple and elegant theory for explaining the consumption of a solid body when it slides with friction on a rough surface [8]. Reye’s model became very popular in Europe (in Italy was promulgated by Panetti [7]), and it is still taught in university courses of applied mechanics. But, strangely enough, this theory has been totally ignored in English and American literature.  Why? A paper from 2001 by Villaggio is interesting to read today.

Dear colleagues!

## International Workshop and School  New Methods of Numerical Simulation and Measurement in Tribology Sandanski, Bulgaria, October

Dear Mechanician

please find enclosed the announcement of the Workshop in Sandanski.

One can find it also on the cite:http://wp1119223.server-he.de/Sandanski2013.html

Please fill the registration form (enclosed)