MATEC Web of Conferences
Volume 33, 2015ESOMAT 2015 – 10th European Symposium on Martensitic Transformations
|Number of page(s)||4|
|Section||Mathematics, Fundamentals and Modelling|
|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: firstname.lastname@example.org
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
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