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Nonlinear Thermoelastic Model for SMAs and SMA Hybrid CompositesA constitutive mathematical model has been developed that predicts the nonlinear thermomechanical behaviors of shape-memory-alloys (SMAs) and of shape-memory-alloy hybrid composite (SMAHC) structures, which are composite-material structures that contain embedded SMA actuators. SMAHC structures have been investigated for their potential utility in a variety of applications in which there are requirements for static or dynamic control of the shapes of structures, control of the thermoelastic responses of structures, or control of noise and vibrations. The present model overcomes deficiencies of prior, overly simplistic or qualitative models that have proven ineffective or intractable for engineering of SMAHC structures. The model is sophisticated enough to capture the essential features of the mechanics of SMAHC structures yet simple enough to accommodate input from fundamental engineering measurements and is in a form that is amenable to implementation in general-purpose structural analysis environments.
Document ID
Acquisition Source
Langley Research Center
Document Type
Other - NASA Tech Brief
Turner, Travis L.
(NASA Langley Research Center Hampton, VA, United States)
Date Acquired
August 25, 2013
Publication Date
February 1, 2004
Publication Information
Publication: NASA Tech Briefs, February 2004
Subject Category
Composite Materials
Report/Patent Number
Distribution Limits
Public Use Permitted.
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