Dynamics of a two-degrees-of-freedom system with friction and heat generation

✍ Scribed by Jan Awrejcewicz; Yuriy Pyryev

• Publisher: Elsevier Science
• Year: 2006
• Tongue: English
• Weight: 302 KB
• Volume: 11
• Category: Article
• ISSN: 1007-5704
• DOI: 10.1016/j.cnsns.2005.01.008

✦ Synopsis

A novel thermomechanical model of frictional self-excited stick-slip vibrations is proposed. A mechanical system consisting of two masses which are coupled by an elastic spring and moving vertically between two walls is considered. It is assumed that between masses and walls a Coulomb friction occurs, and stickslip motion of the system is studied. The applied friction force depends on a relative velocity of the sliding bodies. Stability of stationary solutions is considered. A computation of contact parameters during heating of the bodies is performed. The possibility of existence of frictional auto-vibrations is illustrated and discussed.