Modeling of phase and structure transformations occurring in shape memory alloys under nonmonotonically varying stresses |
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Authors: | I V Mishustin A A Movchan |
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Institution: | 1. Institute of Applied Mechanics, Russian Academy of Sciences, Leninskii pr-t 32A, Moscow, 117334, Russia
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Abstract: | A model of deformation of shape memory alloys (SMA) under nonmonotone loading is proposed. The model takes into account the fact that there is no strain hardening in the process of accumulation of the first phase transformation strains and describes both the usual hardening and the cross-hardening observed in martensite inelasticity experiments. Several examples illustrate the process of solving the model one-dimensional deformation problem with a given law of variation of the stress and the phase composition parameter and the problem on the direct transformation that occurs when cooling an SMA rod subjected to a constant bending moment. |
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