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NON LOCAL AND THERMAL EFFECTS IN A BI-STABLE LATTICE

Archive ouverte : Communication dans un congrès

Bellino, Luca | Florio, Giuseppe | Giordano, Stefano | Puglisi, Giuseppe

Edité par HAL CCSD

The 25th ICTAM was initially scheduled from 23 to 28 August 2020 and should have taken place in Milan. Due to the covid-19 pandemic, the 25th ICTAM has has taken place from 22 to 27 August 2021 in a fully virtual format.. International audience. We extend a previous model in order to consider interface energy terms on a bistable chain undergoing phase transition.Specifically, by including the effects of non local, next to nearest neighbor (NNN), interactions we are able to describe both thepresence of stress peak and the phase evolution when temperature effects are not negligible. In both cases of applied displacement(Helmholtz ensemble) and force (Gibbs ensemble) we obtain fully analytical results for the stress-strain relations, the expectation valueof the number of interfaces, and the stress peak anticipating the nucleation of the new phase.

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