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http://hdl.handle.net/2445/24109
Title: | Preisach modeling of hysteresis for a pseudoelastic Cu-Zn-Al single crystal |
Author: | Ortín, Jordi, 1959- |
Keywords: | Ciència dels materials Equacions d'estat Regla de les fases i equilibri Transformacions de fase (Física estadística) Materials science Equations of state Phase rule and equilibrium Phase transformations (Statistical physics) |
Issue Date: | 1-Feb-1992 |
Publisher: | American Institute of Physics |
Abstract: | Stress-strain trajectories associated with pseudoelastic behavior of a Cu¿19.4 Zn¿13.1 Al (at.%) single crystal at room temperature have been determined experimentally. For a constant cross-head speed the trajectories and the associated hysteresis behavior are perfectly reproducible; the trajectories exhibit memory properties, dependent only on the values of return points, where transformation direction is reverted. An adapted version of the Preisach model for hysteresis has been implemented to predict the observed trajectories, using a set of experimental first¿order reversal curves as input data. Explicit formulas have been derived giving all trajectories in terms of this data set, with no adjustable parameters. Comparison between experimental and calculated trajectories shows a much better agreement for descending than for ascending paths, an indication of a dissymmetry between the dissipation mechanisms operative in forward and reverse directions of martensitic transformation. |
Note: | Reproducció del document publicat a: http://dx.doi.org/10.1063/1.351238 |
It is part of: | Journal of Applied Physics, 1992, vol. 71, núm. 3, p. 1454-1461 |
URI: | http://hdl.handle.net/2445/24109 |
Related resource: | http://dx.doi.org/10.1063/1.351238 |
ISSN: | 0021-8979 |
Appears in Collections: | Articles publicats en revistes (Física Quàntica i Astrofísica) |
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