Results 31 to 40 of about 5,304,813 (404)
Anisotropic shock response of columnar nanocrystalline Cu [PDF]
, 2010 We perform molecular dynamics simulations to investigate the shock response of idealized hexagonal columnar nanocrystalline Cu, including plasticity, local shear, and spall damage during dynamic compression, release, and tension.
Davis L. Tonks +5 more
core +2 more sources
Phase-field modelling of fracture in single crystal plasticity [PDF]
, 2016 We propose a phase-field model for ductile fracture in a single crystal within the kinematically linear regime, by combining the theory of single crystal plasticity as formulated in Gurtin et al.
De Lorenzis, L. +2 more
core +1 more source
Structure and size of the plastic zone formed during nanoindentation of a metallic glass [PDF]
Journal of Non-Crystalline Solids, Volume 523, (2019), 119593, 2019 Using molecular dynamics simulation, we study the plastic zone created during nanoindentation of a large CuZr glass system. The plastic zone consists of a core region, in which virtually every atom undergoes plastic rearrangement, and a tail, where the density distribution of the plastically active atoms decays to zero.
arxiv +1 more source
Micromechanical investigation of the influence of defects in high cycle fatigue [PDF]
, 2014 This study aims to analyse the influence of geometrical defects (notches and holes) on the high cycle fatigue behaviour of an electrolytic copper based on finite element simulations of 2D polycrystalline aggregates.
GUERCHAIS, Raphaël +3 more
core +6 more sources
MATEC Web of Conferences, 2015 By combining the nonlinear finite element analysis techniques and crystal plasticity theory, the macroscopic mechanical behaviour of crystalline material, the texture evolution and earing-type characteristics are simulated accurately.
Yang J. +4 more
doaj +1 more source
Identifying material parameters in crystal plasticity by Bayesian optimization
Optimization and Engineering, 2021 In this work, we advocate using Bayesian techniques for inversely identifying material parameters for multiscale crystal plasticity models. Multiscale approaches for modeling polycrystalline materials may significantly reduce the effort necessary for ...
Jan-Frederik Kuhn +4 more
semanticscholar +1 more source
Investigation into the Effects of Prior Plasticity on Creep Accumulation in 316H Stainless Steel
Physical Sciences Forum, 2022 Steel components in the boilers of nuclear reactors are subject to high temperatures and varying loading conditions. This can introduce time-dependent and time-independent plasticity, which can interact with one another.
Christopher Allen +2 more
doaj +1 more source
Nanoscale mosaicity revealed in peptide microcrystals by scanning electron nanodiffraction. [PDF]
, 2019 Changes in lattice structure across sub-regions of protein crystals are challenging to assess when relying on whole crystal measurements. Because of this difficulty, macromolecular structure determination from protein micro and nanocrystals requires ...
Boyer, David R +10 more
core +3 more sources
A thermodynamically consistent theory of stress-gradient plasticity [PDF]
, 2020 As an extension to strain-gradient models of size-dependent plastic behaviour, this work proposes a model for a stress-gradient theory. The model is distinguished from earlier works on the topic by its being embedded in a thermodynamically consistent framework.
arxiv +1 more source
Metal Crystal/Polycrystal Plasticity and Strengths
Metals, 2022 A brief historical sketch is given of Taylor’s dislocation density-based model description, leading to the prediction of a parabolic, tensile, stress–strain curve for the plastic deformation of aluminum.
Ronald W. Armstrong
doaj +1 more source