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Constitutive Models for Shape Memory Alloy PolycrystalsShape memory alloys (SMA) exhibiting the superelastic or one-way effects can produce large recoverable strains upon application of a stress. In single crystals this stress and resulting strain are very orientation dependent. We show experimental stress/strain curves for a Ni-Al single crystal for various loading orientations. Also shown are model predictions; the open and closed circles indicate recoverable strains obtained at various stages in the transformation process. Because of the strong orientation dependence of shape memory properties, crystallographic texture can be expected to play an important role in the mechanical behavior of polycrystalline SMA. It is desirable to formulate a constitutive model to better understand and exploit the unique properties of SMA.
Document ID
19960047692
Document Type
Conference Paper
Authors
Comstock, R. J., Jr. (Virginia Univ. Charlottesville, VA United States)
Somerday, M. (Virginia Univ. Charlottesville, VA United States)
Wert, J. A. (Virginia Univ. Charlottesville, VA United States)
Date Acquired
August 17, 2013
Publication Date
March 1, 1996
Publication Information
Publication: Proceedings of the 4th Annual Workshop: Advances in Smart Materials for Aerospace Applications
Subject Category
Nonmetallic Materials
Funding Number(s)
CONTRACT_GRANT: NSF DMR-99-24487
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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IDRelationTitle19960047656Analytic PrimaryProceedings of the 4th Annual Workshop: Advances in Smart Materials for Aerospace Applications
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