Effects of phase inhomogeneity and boundary conditions on the dynamic response of SMA wire actuators

Kannan Dasharathi; D. Roy Mahapatra

doi:10.1117/12.815999

31 March 2009 Effects of phase inhomogeneity and boundary conditions on the dynamic response of SMA wire actuators

Kannan Dasharathi, D. Roy Mahapatra

Proceedings Volume 7289, Behavior and Mechanics of Multifunctional Materials and Composites 2009; 72890Q (2009) https://doi.org/10.1117/12.815999
Event: SPIE Smart Structures and Materials + Nondestructive Evaluation and Health Monitoring, 2009, San Diego, California, United States

Abstract

This paper reports the simulation results from the dynamic analysis of a Shape Memory Alloy (SMA) actuator. The emphasis is on understanding the dynamic behavior under various loading rates and boundary conditions, resulting in complex scenarios such as thermal and stress gradients. Also, due to the polycrystalline nature of SMA wires, presence of microstructural inhomogeneity is inevitable. Probing the effect of inhomogeneity on the dynamic behavior can facilitate the prediction of life and characteristics of SMA wire actuator under varieties of boundary and loading conditions. To study the effect of these factors, an initial boundary value problem of SMA wire is formulated. This is subsequently solved using finite element method. The dynamic response of the SMA wire actuator is analyzed under mechanical loading and results are reported. Effect of loading rate, micro-structural inhomogeneity and thermal boundary conditions on the dynamic response of SMA wire actuator is investigated and the simulation results are reported.

Citation Download Citation

Kannan Dasharathi and D. Roy Mahapatra "Effects of phase inhomogeneity and boundary conditions on the dynamic response of SMA wire actuators", Proc. SPIE 7289, Behavior and Mechanics of Multifunctional Materials and Composites 2009, 72890Q (31 March 2009); https://doi.org/10.1117/12.815999

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