Title :
Finite element simulation of electromagnetic induction transducers for impulsive intense sound
Author :
Tsuchiya, Takao ; Kagawa, Yukio ; Okamuro, Takashi ; Mashima, Hideto
Author_Institution :
Dept. of Electr. & Electron. Eng., Okayama Univ., Japan
Abstract :
A finite element approach to the simulation of the dynamic responses of electromagnetic induction transducers is presented. The electromagnetic induction transducer for intense sound radiation is considered as a transient coupled magneto-mechano-acoustic system, in which nonlinear effect of the acoustic field is also included. The axisymmetric finite element formulation is developed and solved in the time domain. Some numerical examples are demonstrated for the transducers with a circular plate radiator and a shallow spherical shell radiator. Experimental verification is then made for the fabricated models of small scale. The comparison proves the validity and the capability of the present numerical modelling.
Keywords :
acoustoelectric transducers; electromagnetic devices; electromagnetic induction; finite element analysis; ultrasonic transducers; acoustic field; circular plate radiator; dynamic response; electromagnetic induction transducer; finite element simulation; impulsive intense sound; nonlinear effect; numerical model; shallow spherical shell radiator; time domain; transient coupled magneto-mechano-acoustic system; Acoustic transducers; Electromagnetic coupling; Electromagnetic induction; Electromagnetic radiation; Electromagnetic transients; Finite element methods; Magnetic domains; Nonlinear acoustics; Nonlinear dynamical systems; Numerical models;
Journal_Title :
Ultrasonics, Ferroelectrics, and Frequency Control, IEEE Transactions on
