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Proceedings Paper

Control of sonic fatigue for high-speed flight vehicles using shape memory alloys
Author(s): Chuh Mei; Zhiwei Zhong; Travis L. Turner
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Paper Abstract

A finite element method for the analysis of thermal deflection and random response is presented for shape memory alloy (SMA) fiber reinforced composite plates subjected to thermal and acoustic loads. The formulation considers the temperature dependent nonlinear material properties of SMAs, the initial deflection and initial stresses, and the geometrical nonlinearity of large thermal deflections. A two-step solution procedure for the combined thermal and acoustic loading is employed consisting of an incremental method for the material nonlinearities and a Newton-Raphson iteration method for prediction of panel responses. Examples are given to show that it is feasible to eliminate the large thermal deflection completely and to reduce the dynamic random response within a given operating temperature range with the proper percentages of SMA volume fraction, prestrain and alloy composition.

Paper Details

Date Published: 16 June 1998
PDF: 11 pages
Proc. SPIE 3326, Smart Structures and Materials 1998: Industrial and Commercial Applications of Smart Structures Technologies, (16 June 1998); doi: 10.1117/12.310666
Show Author Affiliations
Chuh Mei, Old Dominion Univ. (United States)
Zhiwei Zhong, Old Dominion Univ. (United States)
Travis L. Turner, NASA Langley Research Ctr. (United States)


Published in SPIE Proceedings Vol. 3326:
Smart Structures and Materials 1998: Industrial and Commercial Applications of Smart Structures Technologies
Janet M. Sater, Editor(s)

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