Complex behaviour of a quasiperiodically forced experimental system with dry friction

✍ Scribed by Jerzy Wojewoda; Tomasz Kapitaniak; Ronald Barron; John Brindley

• Publisher: Elsevier Science
• Year: 1993
• Tongue: English
• Weight: 752 KB
• Volume: 3
• Category: Article
• ISSN: 0960-0779
• DOI: 10.1016/0960-0779(93)90038-3

✦ Synopsis

A mechanical experiment is described in which dry friction provides a nonlinear coupling between forced linear oscillators.

Interpretation of the aperiodic behaviour of the system suggests that the friction force is a chaotic function of the relative velocity; the chaotic behaviour may be understood in terms of a degree of freedom of motion normal to the surfaces in friction contact. Spectral analysis showed a specific structure of power spectra characteristic of quasiperiodically forced systems which has already been known from numerical experiments.

A new method of predicting power spectra components is proposed.