Results 11 to 20 of about 956 (216)

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

Theoretical 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., Fadodun O.O., Olokuntoye B.A., Layeni O.P., Akinola A.P.   +4 more
doaj   +1 more source

Implementation of incremental yield conditions in spherical coordinates [PDF]

E3S 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

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

Archives 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

Journal 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, Pingwei Xu, Yayun Li, Haidou Wang, Zhihai Cai, Jing Li, Yilong Liang, Yu Liang   +7 more
doaj   +1 more source

A Concise Review of Gradient Models in Mechanics and Physics

Frontiers 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

Modeling the zonal disintegration of rocks near deep level tunnels by gradient internal variable continuous phase transition theory

Journal of the Mechanical Behavior of Materials, 2015
The occurrence of alternating damage zones surrounding underground openings (commonly known as zonal disintegration) is treated as a “far from thermodynamic equilibrium” dynamical process or a nonlinear continuous phase transition phenomenon.
Haoxiang Chen, Qi Chengzhi, Peng Liu, Kairui Li, Aifantis Elias C.   +4 more
doaj   +1 more source

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

Frontiers 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, Franziska S. Brunner, Michael O’Connor, Michael O’Connor   +3 more
doaj   +1 more source

A method to extract slip system dependent information for crystal plasticity models

MethodsX, 2022
A tool to implement a length scale dependency to classical crystal plasticity simulations is presented. Classical crystal plasticity models do not include a size effect; therefore, the size of the grain does not influence the simulated deformation ...
Dylan Agius, Abdullah Al Mamun, Christopher Truman, Mahmoud Mostafavi, David Knowles   +4 more
doaj   +1 more source

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

Journal 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

A minimal gradient-enhancement of the classical continuum theory of crystal plasticity. Part I: The hardening law

Archives of Mechanics, 2016
A simple gradient-enhancement of the classical continuum theory of plasticity of single crystals deformed by multislip is proposed for incorporating size effects in a manner consistent with phenomenological laws established in materials science.
H. Petryk, S. Stupkiewicz
doaj   +1 more source