A new form of the coherency energy in pseudoelasticity |
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| Authors: | T. Atanackovic I. Müller |
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| Affiliation: | 1. Faculty of Technical Sciences, University of Novi Sad, 21000, Novi Sad, Yugoslavia
2. FB 6-Thermodynamik, TU Berlin, D-10623, Berlin, Germany
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| Abstract: | In some previous papers [1], [2] pseudoelasticity in tensile experiments has been treated thermodynamically under the assumption that the relevant constitutive ingredients are| (i) | a non-convex free energy; | | (ii) | coherency between the austenitic and martensitic phase. |
The form of the coherency energy was assumed to be proportional to the product of phase fractions of the two phases. Recently Rogers [3] has proposed a slight variation of this ansatz: The factor of proportionality should depend on the transformation strain. This new form of coherence energy is investigated in this paper. An attractive feature of this new assumption is that the strains of the coexisting phases in equilibrium remain unchanged as the transformation proceeds. |
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| Keywords: | Pseudoelasticity Coherency Hysteresis Phase transitions Solid mechanics |
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