Francesco Massi

TL;DR: In this paper, the authors present the integration of two different numerical procedures to identify the mechanism bringing to brake instability and to analyse its dynamics, and the two models are compared and the onset of squeal is predicted both in the frequency domain by the linear model and in the time domain by a nonlinear one.

TL;DR: In this paper, the frequency analysis of signals characterizing surface scanning is carried out to investigate the vibration spectrum measured on the finger and to highlight the changes shown in the vibration spectra as a function of characteristic contact parameters such as scanning speed, roughness and surface texture.

TL;DR: In this article, an experimental tribological analysis performed in parallel to the dynamic one and aimed to highlight the role of the contact problems in the brake squeal phenomena was presented, showing that the surface topography after squeal, by revealing several fatigue evidences, points out the possible increasing of wear rates that are consequent to the squeal vibrations.

TL;DR: A review of the literature on the numerical tribology of dry contacts by analysing the different scales involved can be found in this article, where the authors propose an exhibition of numerical results.

TL;DR: In this paper, the first two papers dealing with brake squeal instability have been published, and the experimental analysis on squeal presented here identifies several characteristics that lead to instabilities and correlates them with operating parameters as well as with the dynamic behavior of the system.