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Mechanical model applicable to the cyclic deformation reversals

Mechanical model applicable to the cyclic deformation reversals

Recently a mixed isotropic-kinematic model was proposed that adequately reproduces the transitory mechanical behaviour that appears when the deformation direction is reversed. In this model, the isotropic hardening is controlled by an effective deformation while the kinematic hardening evolves based on a phenomenological expression that the Bauschinger effect takes into account. In this work, this formula has been extended for a more general case in which several cyclic deformation reversals are applied. In order to be able to validate the model, multipass torsion tests were carried out at intermediate temperatures with cyclic deformation reversals on a CMn steel. The fit between the predictions and the experimental curves is excellent taking into consideration that it was not necessary to add an additional parameter to the original formula.

https://www.ceit.es/es/133-publicaciones-cientificas/4734-modelo-mecanico-aplicable-a-inversiones-ciclicas-de-la-deformacion

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Proceedings XIII Congreso Nacional de Propiedades Mecánicas en Sólidos PMS2012, Alcoy, pp. 43-48

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