Kinematic analysis of impact-progressive system by beat frequency excitation
L Xiao-hong LUO Guan-wei
Author information+
School of Mechanical Engineering Lanzhou Jiaotong University,Lanzhou 730070,China
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History+
Received
Revised
Published
2011-10-13
2011-11-27
2012-12-28
Issue Date
2012-12-28
Abstract
A mathematical model of impact-progressive mechanical system accouting for vibration and progressive motion, and capable of transferring a high-frequency low-amplitude excitation into low-frequency high-amplitude response is developed. Condition for synchronous and non-synchronous motions of impact components immediately after the impact is studied. A asymmetric beat frequency kinematic excitation is used, i.e.only positive part of the modulated signal excites the mass . The results indicate that an effective impact forces, i.e.hammer effect is generated by the excitation. Two different ways to achieve a steady progression are explored without additional control, however, in these two cases progression rates are relatively low. A simple control strategy enhancing progression rates is implemented, and better progression rates are achieved.
L Xiao-hong LUO Guan-wei.
Kinematic analysis of impact-progressive system by beat frequency excitation[J]. Journal of Vibration and Shock, 2012, 31(24): 1-4
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