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Bibliografie

Journal Article

Asymptotic analysis of single-slip crystal plasticity in the limit of vanishing thickness and rigid elasticity

Engl D., Krömer Stefan, Kružík Martin

: Advances in Calculus of Variations vol.17, 4 (2024), p. 1323-1340

: NDNS + Ph.D. travel grant, Universiteit Utrecht, GF21-06569K, GA ČR

: dimension reduction, Γ-convergence, large strain, single-slip elastoplasticity

: 10.1515/acv-2023-0009

: https://library.utia.cas.cz/separaty/2024/MTR/kromer-0599015.pdf

(eng): We perform via Γ-convergence a 2d-1d dimension reduction analysis of a single-slip elastoplastic body in large deformations. Rigid plastic and elastoplastic regimes are considered. In particular, we show that limit deformations can essentially freely bend even if subjected to the most restrictive constraints corresponding to the elastically rigid single-slip regime. The primary challenge arises in the upper bound where the differential constraints render any bending without incurring an additional energy cost particularly difficult. We overcome this obstacle with suitable non-smooth constructions and prove that a Lavrentiev phenomenon occurs if we\nartificially restrict our model to smooth deformations. This issue is absent if the differential constraints are appropriately softened.

: BA

: 10101