Three-Dimensional Thermomechanical Model for Shape Memory Alloys Exhibiting R-Phase Transformation and Material Anisotropy

0387955 - ÚT 2013 RIV AT eng C - Konferenční příspěvek (zahraniční konf.)
Sedlák, Petr - Frost, Miroslav - Benešová, Barbora - Zineb, T.B. - Šittner, Petr
Three-Dimensional Thermomechanical Model for Shape Memory Alloys Exhibiting R-Phase Transformation and Material Anisotropy.
8th European Solid Mechanics Conference. Graz: Verlag der Technischen Universität Graz, 2012 - (Holzapfen, G.; Ogden, R.), s. 1-2. ISBN 978-3-85125-223-1.
[European Solid Mechanics Conference - ESMC 2012 /8./. Graz (AT), 09.07.2012-13.07.2012]
Grant CEP: GA ČR GA106/09/1573
Výzkumný záměr: CEZ:AV0Z20760514; CEZ:AV0Z10100520
Klíčová slova: shape memory alloys * thermomechanical modeling * dissipation/yield
Kód oboru RIV: BI - Akustika a kmity; JG - Hutnictví, kovové materiály (FZU-D)

Despite of remarkable progress of shape memory alloys (SMAs) thermomechanical modeling in past decades, there is still ongoing work in development of robust models able to cover complex material behavior when multiple loading modes are involved. R-phase transition is present or highly anisotropic behavior is exhibited. In the present work, a new three-dimensional macroscopic model for SMAs is formulated within a thermomechanical framework for rate-independent dissipative materials. The constitutive behavior is fully determined by formulation of the energy and the dissipation/yield functions. The loading history is effectively captured by introduction of internal variables. By a particular choice of imposed constraints, tension-compression asymmetry and anisotropic material behavior are included.
Trvalý link: http://hdl.handle.net/11104/0217220