Solution Behavior of the Transient Heat Transfer Problem in Thermoelectric Shape Memory Alloy Actuators.
TEXAS A AND M UNIV COLLEGE STATION DEPT OF AEROSPACE ENGINEERING
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The main purpose of this paper is to study the solution behavior of the transient heat transfer problem for one dimensional symmetric thermoelectric shape memory alloy SMA actuators. It is proved that for the transient cooling problem with constant electric current density of magnitude J there is a value J0 of IJ such that when J0, the temperature in SMA is always decreasing to its steady state, and when J0, the temperature in SMA may not be always decreasing, which is an important property of thermoelectric SMA actuators reported by Lagoudas and Ding 1995. A lower bound of J0 is given. The physical implications of main results are also discussed.
- Metallurgy and Metallography