| Issue |
MATEC Web of Conferences
Volume 33, 2015
ESOMAT 2015 – 10th European Symposium on Martensitic Transformations
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|---|---|---|
| Article Number | 02006 | |
| Number of page(s) | 4 | |
| Section | Mathematics, Fundamentals and Modelling | |
| DOI | https://doi.org/10.1051/matecconf/20153302006 | |
| Published online | 07 December 2015 | |
Modeling of Functional Properties of Porous Shape Memory Alloy
Saint Petersburg State University, 198504 Saint Petersburg, Russia
a Corresponding author: m.evard@spbu.ru
A model accounting for the microstructure of porous TiNi shape memory alloy samples fabricated by self-propagating high temperature synthesis has been proposed for simulation of their functional-mechanical properties. Structural elements of a porous sample have been approximated by curved beams. An analysis of shapes and sizes of pores and ligaments permitted to identify characteristic sizes of the beams. A mathematical object consisting of rigidly connected small curve beams has been considered. The stress-strain state of a beam was estimated by the classical methods of strength of materials. The microstructural model was used for calculation of the phase deformation of the shape memory material. Simulation of stress-strain curves and phase deformation of a porous TiNi sample on cooling and heating under a constant stress has shown a good correspondence between the experimental data and the results of modeling.
© Owned by the authors, published by EDP Sciences, 2015
This is an Open Access article distributed under the terms of the Creative Commons Attribution License 4.0, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.