Journal
JOURNAL OF SOUND AND VIBRATION
Volume 291, Issue 1-2, Pages 1-18Publisher
ACADEMIC PRESS LTD- ELSEVIER SCIENCE LTD
DOI: 10.1016/j.jsv.2005.05.024
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Investigations are performed on a friction wedge damper model with the objective of studying stick-slip phenomena at various excitation frequencies. Model design considerations include maintaining dry friction sliding-contact and near-vertical motion. Time traces, phase portraits and frequency spectra are presented for the relative displacement and velocity. Stick-slip phenomena, found to be characterized by harmonic distortions, appear consistently in the vicinity of 30 Hz and less so at higher frequencies. There appears to be a transition from stick-slip to pure-slip motion between 30 and 40 Hz. This transition is characterized by a sharp increase in peak-to-peak response. Two types of stick-slip phenomena, distinguishable by the direction of relative velocity before and after stick, are observed. (c) 2005 Elsevier Ltd. All rights reserved.
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