Results 11 to 20 of about 1,616,723 (373)

Phenotypic plasticity of European larch radial growth and wood density along a‐1,000 m elevational gradient [PDF]

open access: goldPlant-Environment Interactions, 2021
Why this research Matters Phenotypic plasticity is a key mechanism for sedentary long‐living species to adjust to changing environment. Here, we use mature Larix decidua tree‐ring variables collected along an elevational transect in the French Alps to ...
Margarita Escobar‐Sandoval   +4 more
openalex   +2 more sources

Atomistic simulations of plasticity heterogeneity in gradient nano-grained FCC metals

open access: goldMaterials & Design, 2022
Gradient nano-grained (GNG) metals are an emerging class of heterogeneous structured materials with extraordinary mechanistic performances and unnatural plasticity mechanisms, which are unachievable in traditional homogeneous nanocrystalline metals. Here,
Like Xu   +3 more
openalex   +3 more sources

Simulation of Lueders bands using regularized large strain elasto-plasticity

open access: yesArchives of Mechanics, 2021
This paper deals with the numerical simulation of an instability phenomenon called Lueders bands with two regularized material models: viscoplasticity and gradient-enhanced plasticity.
M. Mucha, B. Wcisło, J. Pamin
doaj   +1 more source

Contact of Rough Surfaces: An Incremental Model Accounting for Strain Gradient Plasticity

open access: yesLubricants, 2023
In the contact of rough surfaces, most contact patches are at the scale of micrometers, and thus, their contact deformation can be dominated by the size-dependent plasticity. In this paper, we propose a new strategy to analyze the role of strain gradient
Chunyun Jiang   +3 more
doaj   +1 more source

Strength-plasticity synergy from ambient to high temperature via gradient-ordering in boride-reinforced WTaV medium-entropy alloy. [PDF]

open access: yesNat Commun
Developing next-generation hypersonic vehicles necessitates structural materials capable of withstanding extreme thermal gradients. However, conventional alloys usually sacrifice room-temperature plasticity for breakthroughs in high-temperature strength.
Sun B   +8 more
europepmc   +2 more sources

Natural-gradient learning for spiking neurons

open access: yeseLife, 2022
In many normative theories of synaptic plasticity, weight updates implicitly depend on the chosen parametrization of the weights. This problem relates, for example, to neuronal morphology: synapses which are functionally equivalent in terms of their ...
Elena Kreutzer   +2 more
doaj   +1 more source

A Comparison of Plasticity Regularization Approaches for Geodynamic Modeling

open access: yesGeochemistry, Geophysics, Geosystems, 2023
The emergence, geometry and activation of faults are intrinsically linked to frictional rheology. The latter is thus a central element in geodynamic simulations which aim at modeling the generation and evolution of fault zones and plate boundaries ...
Thibault Duretz   +3 more
doaj   +1 more source

Burgers tensor flow accounting for cold work and thermal annealing [PDF]

open access: yesTheoretical and Applied Mechanics
This paper proposes a kinematical-thermal-based constitutive law for the evolution of Burgers tensor during cold work and upon subsequent thermal annealing of a polycrystalline. The proposal is based on the paper by Anand et al. [L. Anand., M. E. Gurtin.,
Borokinni A.S.   +4 more
doaj   +1 more source

Selection of slip systems in confined single crystal gradient plasticity: coupled effects of slip system orientations, latent hardening, and grain boundaries

open access: yesArchives of Mechanics, 2019
In crystal plasticity under prescribed deformation, the incremental material response is potentially non-unique owing to slip system redundancy for most of the crystalline structures.
J.L. Dequiedt
doaj   +1 more source

Implementation of incremental yield conditions in spherical coordinates [PDF]

open access: yesE3S Web of Conferences, 2021
The application of incremental plasticity conditions in the axisymmetric problem of a spherical tank loaded with internal and external pressure is considered.
Kalashnikov Sergey, Gurova Elena
doaj   +1 more source

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