Results 31 to 40 of about 97,501 (285)
, 2005 A Phenomenological Mesoscopic Field Dislocation Mechanics (PMFDM) model is developed, extending continuum plasticity theory for studying initial-boundary value problems of small-scale plasticity.
Acharya, Amit, Roy, Anish
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Study of size effects in thin films by means of a crystal plasticity theory based on DiFT [PDF]
, 2007 In a recent publication, we derived the mesoscale continuum theory of plasticity for multiple-slip systems of parallel edge dislocations, motivated by the statistical-based nonlocal continuum crystal plasticity theory for single-glide due to Yefimov et ...
Limkumnerd, Surachate +1 more
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A Brief Note on the Nix–Gao Strain Gradient Plasticity Theory
Metals, 2018 The mathematical nature of the flow rule for the strain gradient plasticity theory proposed by Nix and Gao (W.D. Nix and H. Gao, J Mech Phys Solids 46(3), 411(1998)) is discussed based on the paradigm developed by Gurtin and Anand (M.E.
A. S. Borokinni, Dabiao Liu
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A porous crystal plasticity constitutive model for ductile deformation and failure in porous single crystals [PDF]
, 2018 The author thankfully acknowledges the financial support of EPSRC funding (EP/ L021714/1).Peer ...
Siddiq, Amir
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Materials & Design, 2022 An analytical flow stress model, based on isotropic strain gradient plasticity theory, for precipitation hardened materials, is proposed and evaluated against tensile data on a 15 wt% Cr - 5 wt% Ni (15-5) PH stainless steel. The 15-5 PH material was aged
Philip Croné +5 more
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Mode I crack tip fields: strain gradient plasticity theory versus J2 flow theory
, 2019 The mode I crack tip asymptotic response of a solid characterised by strain gradient plasticity is investigated. It is found that elastic strains dominate plastic strains near the crack tip, and thus the Cauchy stress and the strain state are given ...
Fleck, Norman A. +1 more
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Torsion in Strain-Gradient Plasticity: Energetic Scale Effects [PDF]
SIAM Journal on Applied Mathematics, 2012 We study elasto-plastic torsion in a thin wire within the framework of the strain-gradient plasticity theory elaborated by Gurtin and Anand in 2005. The theory in question envisages two material scales: an energetic length-scale, which takes into account the so-called “geometrically-necessary dislocations” through a dependence of the free energy on the
CHIRICOTTO, MARIA +2 more
openaire +3 more sources
Simulation of instabilities in non-softening Drucker-Prager plasticity
Computer Assisted Methods in Engineering and Science, 2023 The problem of instability and strain localization in a hardening non-associative Drucker-Prager plasticity theory is analyzed. The classical and gradient-enhanced versions of the theory are reviewed and instability indicators are summarized.
Anna Stankiewicz, Jerzy Pamin
doaj
Constitutive Model of Thin Metal Sheet in Bulging Test Considering Strain Gradient Hardening
Medžiagotyra, 2020 The study of the size effect was one of the most important subjects in the field of micro-forming. To investigate the stress of the thin sheet in the bulging test with the second order size effect, a constitutive equation considering the strain gradient ...
Wei LIANG, Tieping WEI, Xiaoxiang YANG
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Investigations on micro-mechanical properties of polycrystalline Ti(C,N) and Zr(C,N) coatings [PDF]
, 2018 Micro-mechanical properties of Ti(C,N) and Zr(C,N) coatings deposited by chemical vapor deposition on a WC-Co cemented carbide substrate were examined by micro-compression testing using a nanoindenter equipped with a flat punch.
El Azhari, Idriss +6 more
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