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M. Eissa and M. Sayed, “A Comparison between Active and Passive Vibration Control of Non-Linear Simple Pendulum, Part II: Longitudinal Tuned Absorber and Negative Feedback,” Mathematical and Computa- tional Applications, Vol. 11, No. 2, 2006, pp. 151-162.

has been cited by the following article:

• TITLE: Study of Stability and Vibration Reduction in Multi-Tool Ultrasonic Machining under Simultaneous Primary and Internal Resonance

  AUTHORS: Yaser Salah Hamed, Mohamed Syed Abd Elkader, Hamdi Mahmoud Genedi

  KEYWORDS: Passive Vibration Control; Stability; Resonance; Ultrasonic Machining (USM)

  JOURNAL NAME: Applied Mathematics, Vol.3 No.1, January 4, 2012

  ABSTRACT: The main object of this paper is the mathematical study of the vibration behavior in ultrasonic machining (USM) described by non-linear differential equations. The ultrasonic machining (USM) consists of the tool holder and the absor-bers representing the tools. This leads to four-degree-of-freedom system subject to multi-external excitation forces. The aim of this project is the reduction of the vibrations in the tool holder and have reasonable amplitudes for the tools represented by the multi-absorbers. Multiple scale perturbation method is applied to obtain the solution up to the second order approximation and to study the stability of the steady state solution near different simultaneous resonance cases. The resulting different resonance cases are reported and studied numerically. The stability of the steady state solution near the selected resonance cases is studied applying both frequency response equations and phase-plane technique. The effects of the different parameters of the system and the absorbers on the system behavior are studied numerically. Optimum working conditions for the tools were obtained. Comparison with the available published work is reported.