A STUDY ON PERIODIC MOTIONS EFFECT OF IMPACT VIBRATIONSYSTEM FROM DRY FRICTION
ZHANG You-qiang1 , DING Wang-cai 2
1 School of Mechanical and Electrical Engineering, University of Tarim, Alar 843300, China2 School of Mechatronic Engineering, Lanzhou Jiaotong University, Lanzhou 730070, China
Abstract：A nonlinear dynamical model of the two-degree-of-freedom dry friction oscillators with symmetric clearance is established, semi-analytic and numerical simulation method are used to resolve the response of system and complicated Slip-stick-impact dynamic behaviors are investigated. In order to capture accurately dividing points of Slip-stick-impact motions, the theoretical method about decision of Slip, stick, and impact of system are given and their engaging conditions are put forward respectively. There exist rich symmetrical periodic motion, stick-slip-impact motion, quasi-periodic motion, chaos and the influences of dry friction on the system dynamics are discussed.
2009, Vol. 28 
