Results 1 to 10 of about 1,616,723 (373)
A potential for higher-order phenomenological strain gradient plasticity to predict reliable response under non-proportional loading. [PDF]
Proc Math Phys Eng Sci, 2019 We propose a plastic potential for higher-order (HO) phenomenological strain gradient plasticity (SGP), predicting reliable size-dependent response for general loading histories.
Panteghini A, Bardella L, Niordson CF.
europepmc +2 more sources
Stress-gradient plasticity. [PDF]
Proc Natl Acad Sci U S A, 2011 A new model, stress-gradient plasticity, is presented that provides unique mechanistic insight into size-dependent phenomena in plasticity. This dislocation-based model predicts strengthening of materials when a gradient in stress acts over dislocation source–obstacle configurations.
Chakravarthy SS, Curtin WA.
europepmc +4 more sources
Gradient nanostructured steel with superior tensile plasticity
Science Advances, 2023 Nanostructured metallic materials with abundant high-angle grain boundaries exhibit high strength and good radiation resistance. While the nanoscale grains induce high strength, they also degrade tensile ductility. We show that a gradient nanostructured ferritic steel exhibits simultaneous improvement in yield strength by 36% and uniform elongation by ...
Zhongxia Shang +9 more
openaire +5 more sources
On standard gradient plasticity and visco-plasticity
International Journal of Solids and Structures, 2021 Abstract This paper is devoted to the standard theory of gradient plasticity and visco-plasticity, cf. Gudmundson (2004), Fleck and Willis (2009) and the quoted references. Within the framework of the generalized standard materials and the generalized principle of virtual work, our attention is focussed on the mathematical basis of the theory in ...
Nguyen Quoc Son
openaire +2 more sources
Fracture in distortion gradient plasticity [PDF]
International Journal of Engineering Science, 2020 In this work, distortion gradient plasticity is used to gain insight into material deformation ahead of a crack tip. This also constitutes the first fracture mechanics analysis of gradient plasticity theories adopting Nye's tensor as primal kinematic variable. First, the asymptotic nature of crack tip fields is analytically investigated.
Fuentes-Alonso, S, Martínez-Pañeda, E
openaire +7 more sources
Gradient plasticity in gradient nano-grained metals [PDF]
Extreme Mechanics Letters, 2016 Gradient nano-grained (GNG) metals are a unique class of materials with spatial gradients in grain size, typically from the surface to the bulk. Here the gradient mechanical behavior in GNG copper is studied by a crystal plasticity finite element model that accounts for grain-size-dependent yield strengths.
Zhi Zeng +5 more
openaire +2 more sources
Gradient plasticity crack tip characterization by means of the extended finite element method [PDF]
, 2017 Strain gradient plasticity theories are being widely used for fracture assessment, as they provide a richer description of crack tip fields by incorporating the influence of geometrically necessary dislocations.
Emilio Martínez‐Pañeda +2 more
openalex +3 more sources
A Review on Strain Gradient Plasticity Approaches in Simulation of Manufacturing Processes
Journal of Manufacturing and Materials Processing, 2020 Predicting the performances of a manufactured part is extremely important, especially for industries in which there is almost no room for uncertainties, such as aeronautical or automotive.
R. Russo +3 more
semanticscholar +1 more source
Some properties of the dissipative model of strain-gradient plasticity [PDF]
, 2016 A theoretical and computational investigation is carried out of a dissipative model of rate-independent strain-gradient plasticity and its regularization.
Carstensen, C +4 more
core +2 more sources
On-chip Few-shot Learning with Surrogate Gradient Descent on a Neuromorphic Processor [PDF]
, 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