Results 21 to 30 of about 1,849,278 (326)

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

Efficient gradient enhancements for plasticity with ductile damage in the logarithmic strain space

open access: yesEuropean Journal of Mechanics - A/Solids, 2023
We contrast different gradient-enhancements for plasticity-damage material models in the logarithmic strain space and compare them to reference models based on multiplicative plasticity.
J. Friedlein, J. Mergheim, P. Steinmann
semanticscholar   +1 more source

A minimal gradient-enhancement of the classical continuum theory of crystal plasticity. Part II: Size effects

open access: yesArchives of Mechanics, 2016
In our previous paper, a simple gradient-enhancement of the classical continuum theory of plasticity of single crystals deformed by multislip has been proposed for incorporating size effects. A single internal length scale has been derived as an explicit
S. Stupkiewicz, H. Petryk
doaj   +1 more source

Effect of a gradient structure on the mechanical performance of Inconel 718 Ni-based superalloy at elevated temperatures

open access: yesJournal of Materials Research and Technology, 2023
The effect of a gradient structure (GS) with present precipitates on the tensile properties of Inconel 718 (IN718) alloy at elevated temperatures was studied.
Wei Jiang   +7 more
doaj   +1 more source

On-chip Few-shot Learning with Surrogate Gradient Descent on a Neuromorphic Processor [PDF]

open access: yes, 2019
Recent work suggests that synaptic plasticity dynamics in biological models of neurons and neuromorphic hardware are compatible with gradient-based learning (Neftci et al., 2019).
Neftci, Emre   +3 more
core   +2 more sources

Indentation size effects in crystalline materials: A law for strain gradient plasticity

open access: yes, 1998
We show that the indentation size effect for crystalline materials can be accurately modeled using the concept of geometrically necessary dislocations. The model leads to the following characteristic form for the depth dependence of the hardness: H H 0 1+
W. Nix, Huajian Gao
semanticscholar   +1 more source

A Concise Review of Gradient Models in Mechanics and Physics

open access: yesFrontiers in Physics, 2020
The various mathematical models developed over the years to interpret the behavior of materials and corresponding processes they undergo were based on observations and experiments made at that time.
Elias C. Aifantis
doaj   +1 more source

A gradient theory based on the Aifantis theory using the Gurtin-Anand strain gradient plasticity approach

open access: yesJournal of the Mechanical Behavior of Materials, 2018
This article investigates the differences between the Aifantis and Gurtin-Anand strain gradient plasticity. The fact that Gurtin-Anand strain gradient plasticity is richer than the Aifantis strain gradient plasticity provides a basis for which we could ...
Borokinni Adebowale S.
doaj   +1 more source

Quantifying population and clone-specific non-linear reaction norms to food gradients in Daphnia magna

open access: yesFrontiers in Ecology and Evolution, 2022
Phenotypic plasticity is normally quantified as a reaction norm which details how trait expression changes across an environmental gradient. Sometime reaction norms are linear, but often reaction norms are assumed to be linear because plasticity is ...
Stewart J. Plaistow   +3 more
doaj   +1 more source

Normality condition in elasticity [PDF]

open access: yes, 2013
Strong local minimizers with surfaces of gradient discontinuity appear in variational problems when the energy density function is not rank-one convex. In this paper we show that stability of such surfaces is related to stability outside the surface via ...
Grabovsky, Yury, Truskinovsky, Lev
core   +1 more source

Home - About - Disclaimer - Privacy