Results 101 to 110 of about 235,245 (284)
Multi-level analysis of localisation problems [PDF]
, 2001 Localisation processes, such as shear banding and necking, have been investigated following a macroscopic and a microscopic approach. Both approaches have been formulated within a finite deformation plasticity framework.
Estrin, Y, Sluys, LJ, Wells, GN
core
Plastic dislocation and incompatibility density as indicators for residual stresses [PDF]
, 2019 Residual stresses in forming simulations are typically investigated by analyzing the remaining stress state after removing all external loadings. However, the generation of the stress state during forming remains unknown.
Landkammer, Philipp, Steinmann, Paul
core
On elastic gaps in strain gradient plasticity: 3D discrete dislocation dynamics investigation
Acta Materialia, 2023 Yaovi Armand Amouzou-Adoun +6 more
semanticscholar +1 more source
Strain hardening-softening oscillations induced by nanoindentation in bulk solids [PDF]
arXiv, 2016 Nanoindentation is a widely used method for sensitive exploration of the mechanical properties of micromechanical systems. We derived an empirical analysis technique to extract stress-strain field gradient and divergence representations from nanoindentation measurements. With this approach local gradients and heterogeneities can be discovered to obtain
arxiv
Localization Analysis of an Energy-Based Fourth-Order Gradient Plasticity Model
, 2015 The purpose of this paper is to provide analytical and numerical solutions of the formation and evolution of the localized plastic zone in a uniaxially loaded bar with variable cross-sectional area.
Jirásek, Milan +2 more
core +1 more source
Advances in Civil Engineering, 2019 The Hall-Petch relation in aluminium is discussed based on the strain gradient plasticity framework. The thermodynamically consistent gradient-enhanced flow rules for bulk and grain boundaries are developed using the concepts of thermal activation energy
Yooseob Song +2 more
doaj +1 more source
Strain gradient plasticity based on saturating variables
European Journal of Mechanics - A/Solids, 2023 Mohamed Abatour, S. Forest
semanticscholar +1 more source
Strain gradient plasticity, strengthening effects and plastic limit analysis
International Journal of Solids and Structures, 2010 AbstractWithin the framework of isotropic strain gradient plasticity, a rate-independent constitutive model exhibiting size dependent hardening is formulated and discussed with particular concern to its strengthening behavior. The latter is modelled as a (fictitious) isotropic hardening featured by a potential which is a positively degree-one ...
openaire +2 more sources
, 2014 We investigate an immediate application in finite strain multiplicative plasticity of the family of isotropic volumetric-isochoric decoupled strain energies \begin{align*} F\mapsto W_{_{\rm eH}}(F):=\hat{W}_{_{\rm eH}}(U):=\{\begin{array}{lll} \frac{\mu}{
Ghiba, Ionel-Dumitrel, Neff, Patrizio
core +1 more source
Influences of Strain Rate and Temperature Variation on Material Intrinsic Length of Plasticity Strain Gradient Theory [PDF]
, 2000 Ya-Pu Zhao, Tongxi Yu
openalex +1 more source