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Bibliography

Journal Article

Crystal plasticity model of shear and kink bands-energetic approach

Kratochvíl J., Kružík Martin, Sedláček R.

: Philosophical Magazine vol.90, 27 (2010), p. 3729-3742

: CEZ:AV0Z10750506

: IAA100750802, GA AV ČR

: crystal plasticity, kink bands-energetic approach

: 10.1080/14786430903449411

: http://library.utia.cas.cz/separaty/2010/MTR/kruzik-crystal plasticity model of shear and kink bands-energetic approach.pdf

(eng): We present a continuum crystal plasticity model of a lamellar deformation substructure of shear and kink bands. An evolutionary problem for the development of a spontaneous structural inhomogeneity is formulated in the framework of energetic solutions. Conti and Theil proved that in the case of an isothermal single-slip crystal, rigid plasticity with no hardening lamellaea form an optimal microstructure. Moreover, their model predicts the existence of a boundary layer which accommodates the lamellar substructure to displacement boundary conditions. It is suggested that the width of the shear and kink bands is a compromise: the minimization of bulk energy tends to decrease their size, while the energy of the band interfaces or the inner structure of the bands opposes this tendency.

: BM

2019-01-07 08:39