Simulations of magnetostrictive actuators for ultrasonic applications

Zhongguo Wei; Goran Engdahl; Fredrik Stillesjo

doi:10.1117/12.388247

14 June 2000 Simulations of magnetostrictive actuators for ultrasonic applications

Zhongguo Wei, Goran Engdahl, Fredrik Stillesjo

Proceedings Volume 3992, Smart Structures and Materials 2000: Active Materials: Behavior and Mechanics; (2000) https://doi.org/10.1117/12.388247
Event: SPIE's 7th Annual International Symposium on Smart Structures and Materials, 2000, Newport Beach, CA, United States

Abstract

The dynamic behavior of Terfenol-D actuators with laminated magnetostrictive materials for ultrasonic applications has been modeled using a new technique developed on the Simulink platform. The nonlinear simulation model is based on the finite difference method and lumped-circuit approaches with modified constitutive equations, which can simultaneously handle the non-linearities, eddy currents, hysteresis effects, and the electrical, magnetic and mechanical system interactions. Because the power losses are so considerable at ultrasonic frequencies, a thermal lumped circuit approach of the electro-thermal performance has been incorporated in the model and the thermal balance of the actuators with possible cooling system thus can be taken into account in the whole system design. The nonlinear properties of Terfenol-D, obtained from static material characterizations, were used as numerical input to the simulation models. The model integration and some application examples including the numerical estimation of the effects of frequency, number of lamination, magnetostrictive rod dimensions, and eddy currents were presented. The preliminary result indicate that the new design and simulation package is very straightforward and the dynamic behavior of the laminated magnetostrictive actuators at high frequencies can be predicted and estimated fairly well from the simulation model.

Citation Download Citation

Zhongguo Wei, Goran Engdahl, and Fredrik Stillesjo "Simulations of magnetostrictive actuators for ultrasonic applications", Proc. SPIE 3992, Smart Structures and Materials 2000: Active Materials: Behavior and Mechanics, (14 June 2000); https://doi.org/10.1117/12.388247

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available