Modal interaction in ultrasonic systems

Cardoni, A., Lim, F.C.N. , Lucas, M. and Cartmell, M.P. (2002) Modal interaction in ultrasonic systems. In: Forum Acucticum Sevilla 2002, Seville, Spain,

Abstract

High power ultrasonic systems are used in industrial applications such as welding and cutting. Common reliability problems, such as noise and component failures, often stem from participation of untuned modes in the driving mode due to nonlinear behaviour. A preliminary theoretical investigation to reduce the system nonlinearities is presented for the case of two Duffing oscillators. Experimental application of the theory to an ultrasonic cutting system demonstrates the validity of manipulating the nonlinear characteristics via ‘Nonlinear Cancellation Coupling’. Further, modal interactions in the form of combination resonances are characterised experimentally.

• Item Type: Conference Proceedings
• Status: Published
• Refereed: Yes
• Glasgow Author(s) Enlighten ID: Cartmell, Prof Matthew and Cardoni, Dr Andrea and Lucas, Professor Margaret and Lim, Dr Fannon
• Authors: Cardoni, A., Lim, F.C.N., Lucas, M., and Cartmell, M.P.
• College/School: College of Science and Engineering > School of Engineering > Systems Power and Energy