Vibration suppression in multi-tool ultrasonic machining to multi-external and parametric excitations
Vibration suppression in multi-tool ultrasonic machining to multi-external and parametric excitations作者机构:Department of Engineering MathematicsFaculty of Electronic EngineeringMenoufiya University
出 版 物:《Acta Mechanica Sinica》 (力学学报(英文版))
年 卷 期:2009年第25卷第3期
页 面:403-415页
核心收录:
学科分类:08[工学] 0802[工学-机械工程] 0822[工学-轻工技术与工程] 080201[工学-机械制造及其自动化]
主 题:Control Stability Ultrasonic machining (USM)
摘 要:Ultrasonic machining (USM) is of particular interest for the machining of non-conductive, brittle materials such as engineering ceramics. In this paper, a multi-tool technique is used in USM to reduce the vibration in the tool holder and have reasonable amplitude for the tools. This can be done via dynamic absorbers. The coupling of four nonlinear oscillators of the tool holder and tools representing ultrasonic cutting process are investigated. This leads to a four-degree-of-freedom system subjected to multi-external and multi-parametric excitation forces. The aim of this work is to control the tool holder behavior at simultaneous primary, sub-harmonic and internal resonance condition. Multiple scale perturbation method is used to obtain the solution up to the second order approximations. The different resonance cases are reported and studied numerically. The stability of the system is investigated by using both phase-plane and frequency response techniques. The effects of the different parameters of the tools on the system behavior are studied numerically. Comparison with the available published work is reported.