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A coupled dissipation functional for modeling the functional fatigue in polycrystalline shape memory alloys

J. Waimann, P. Junker, K. Hackl.

European Journal of Mechanics, A/Solids, 55, 110-121, (2016)

The pseudoelastic material behavior is one outstanding feature of shape memory alloys. This effect comes along with the forming of two plateaus in the stress/strain diagram of a tension test. Cyclic loading leads to a decrease particularly of the upper stress-plateau due to the evolution of plastic deformations which also implies fatigue of the material. In this work, we develop a variational material model which is able to predict the effect of fatigue using a novel approach for the dissipation potential that couples the evolutions of phase transformations and plastic strains. © 2015 Published by Elsevier Masson SAS.

Keyword(s): Polycrystalline shape memory alloys, Functional fatigue, Combined Voigt/Reuß energy bound
Cite as: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84942156418&doi=10.1016%2fj.euromechsol.2015.08.001&partnerID=40&md5=6969c4254098aac74a25a74304eb49f2
DOI: 10.1016/j.euromechsol.2015.08.001
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