Title :
Finite-element simulation of transient heat response in ultrasonic transducers
Author :
Ando, Ei´ichi ; Kagawa, Yukio
Author_Institution :
SPC Electronic Corp., Tokyo, Japan
fDate :
5/1/1992 12:00:00 AM
Abstract :
The application of the finite-element method to a transient heat response problem in electrostrictive ultrasonic transducers during their pulsed operation is described. The temperature and thermal stress distribution are of practical importance for the design of the ultrasonic transducers when they are operated at intense levels. Mechanical vibratory loss is responsible for heat in the elastic parts, while dielectric loss is responsible in the ferroelectric parts. A finite-element computer model is proposed for the temperature change evaluation in the transducers with time. Natural and forced cooling convection and heat radiation from the transducers´ boundaries are included. Simulation is made for Langevin-type transducer models, for which comparison is made with experimental data.<>
Keywords :
digital simulation; finite element analysis; temperature distribution; thermal stresses; ultrasonic transducers; Langevin-type transducer models; dielectric loss; electrostrictive ultrasonic transducers; finite element simulation; finite-element computer model; forced cooling convection; heat radiation; mechanical vibratory loss; natural convection; temperature distribution; thermal stress distribution; transient heat response; Computational modeling; Dielectric losses; Electrostriction; Ferroelectric materials; Finite element methods; Steady-state; Temperature distribution; Thermal stresses; Ultrasonic transducers; Vibrations;
Journal_Title :
Ultrasonics, Ferroelectrics, and Frequency Control, IEEE Transactions on
