Zobrazeno 1 - 10
of 223
pro vyhledávání: '"Truskinovsky, Lev"'
We use molecular dynamics to show that plastic slip is a crucial component of the transformation mechanism of a square-to-triangular structural transition. The latter is a stylized analog of many other reconstructive phase transitions. To justify our
Externí odkaz:
http://arxiv.org/abs/2409.04066
Autor:
Salman, Oguz Umut, Baggio, Roberta, Bacroix, Brigitte, Zanzotto, Giovanni, Gorbushin, Nikolai, Truskinovsky, Lev
Publikováno v:
Comptes Rendus. Physique, Vol 22, Iss S3, Pp 201-248 (2021)
We study the mechanical response of a dislocation-free 2D crystal under homogenous shear using a new mesoscopic approach to crystal plasticity, a Landau-type theory, accounting for the global invariance of the energy in the space of strain tensors wh
Externí odkaz:
https://doaj.org/article/da9dff75622e4633a9551a9cb53c6f6b
Publikováno v:
Comptes Rendus. Physique, Vol 22, Iss S3, Pp 163-199 (2021)
Recently acoustic signature of dislocation avalanches in HCP materials was found to be long tailed in size and energy, suggesting critical dynamics. Moreover, the intermittent plastic response was found to be generic for micro- and nano-sized systems
Externí odkaz:
https://doaj.org/article/ed64248a1ce241b8bff241f51dd33385
Autor:
Vainchtein, Anna, Truskinovsky, Lev
We consider a version of the classical Hamiltonian Fermi-Pasta-Ulam (FPU) problem with a trilinear force-strain relation of soft-hard-soft type that is in general non-symmetric. In addition to the classical spatially localized solitary waves, such ha
Externí odkaz:
http://arxiv.org/abs/2406.06437
Autor:
Recho, Pierre, Truskinovsky, Lev
Taking inspiration from the crawling motion of biological cells on a substrate, we consider a physical model of self-propulsion where the spatio-temporal driving can involve both, a mechanical actuation by active force couples, and a chemical actuati
Externí odkaz:
http://arxiv.org/abs/2405.09302
Active renewable matter, a distinctive feature of adaptive living materials, can exhibit highly unusual mechanical responses by actively navigating the space of material parameters. In particular, it can self-drive towards elastic spinodals where the
Externí odkaz:
http://arxiv.org/abs/2403.17517
Autor:
Vainchtein, Anna, Truskinovsky, Lev
We consider a version of the classical Hamiltonian FPU (Fermi-Pasta-Ulam) problem with nonlinear force-strain relation in which a hardening response is taken over by a softening regime above a critical strain value. We show that in addition to pulses
Externí odkaz:
http://arxiv.org/abs/2401.16593
Autor:
Grabovsky, Yury, Truskinovsky, Lev
While classical theory of phase transitions deals with systems where shape variation is energetically neutral, the account of rigidity can lead to the emergence of new thermodynamic features. One of them is a special type of critical points that are
Externí odkaz:
http://arxiv.org/abs/2306.02495
Autor:
Grabovsky, Yury, Truskinovsky, Lev
We address the fundamental difference between solid-solid and liquid-liquid phase transitions within the Ericksen's nonlinear elasticity paradigm. To highlight ideas, we consider the simplest nontrivial 2D problem and work with a prototypical two-pha
Externí odkaz:
http://arxiv.org/abs/2301.01909
Autor:
Grabovsky, Yury, Truskinovsky, Lev
We present a class of models of elastic phase transitions with incompatible energy wells in any space dimension, where an abundance of Lipschitz global minimizers in a hard device coexists with a complete lack of strong local minimizers. The analysis
Externí odkaz:
http://arxiv.org/abs/2301.01870