Self-induced temperature rise of stack actuators due to dynamic excitation

Eric M. Flint; Chen Liang; Craig A. Rogers

doi:10.1117/12.208279

8 May 1995 Self-induced temperature rise of stack actuators due to dynamic excitation

Eric M. Flint, Chen Liang, Craig A. Rogers

Proceedings Volume 2443, Smart Structures and Materials 1995: Smart Structures and Integrated Systems; (1995) https://doi.org/10.1117/12.208279
Event: Smart Structures and Materials '95, 1995, San Diego, CA, United States

Abstract

The need to be able to predict the self induced thermal heat rise of piezoelectric and electrostrictive stack actuators under AC dynamic operation motivated the research presented in this paper. First, an equation for the electrical admittance of an stack actuator that explicitly includes the effects of having the stack actuator in a host structure is provided. This equation is then shown to be critical when determining the apparent, reactive and dissipative power used by an actuator. With the theoretical predictions of the electrical admittance available, it is possible to calculate the contributions of the individual loss components to the total dissipative power. Using a simple heat transfer analysis, the internal heat rise of the actuator is predicted given the dissipative power input. A case study is used to illustrate how to apply the developed theories. This research provides a first step toward the ability to predict the temperature state of active materials in stack configurations. This would allow accurate prediction of actuator parameters and hence electro-dynamic behavior. Additionally, knowledge of the physics behind self induced heat rise can be used to avoid exceeding the active materials Curie temperature during operation and allow proper design of active isolation elements for temperature sensitive equipment.

Citation Download Citation

Eric M. Flint, Chen Liang, and Craig A. Rogers "Self-induced temperature rise of stack actuators due to dynamic excitation", Proc. SPIE 2443, Smart Structures and Materials 1995: Smart Structures and Integrated Systems, (8 May 1995); https://doi.org/10.1117/12.208279

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