Avalanche statistics and the intermittent-to-smooth transition in microplasticity
Plastic flow at small scales is generally observed to be intermittent, whereas the stress-strain
behavior of bulk crystals is mostly smooth. Here we find that when the external deformation …
behavior of bulk crystals is mostly smooth. Here we find that when the external deformation …
[图书][B] Dislocation mechanism-based crystal plasticity: theory and computation at the micron and submicron scale
Dislocation Based Crystal Plasticity: Theory and Computation at Micron and Submicron
Scale provides a comprehensive introduction to the continuum and discreteness dislocation …
Scale provides a comprehensive introduction to the continuum and discreteness dislocation …
A dislocation-based crystal plasticity model for single-crystal micropillars based on strain burst with stochastic characteristics
H Guo, W Xu, F Shang - Acta Mechanica, 2024 - Springer
The recent uniaxial micron-compression experiments exhibit the size effect and stochastic
phenomenon such as stair-like fluctuation of the strain for the plasticity deformation of the …
phenomenon such as stair-like fluctuation of the strain for the plasticity deformation of the …
[HTML][HTML] A stochastic crystal plasticity model with size-dependent and intermittent strain bursts characteristics at micron scale
Size effect and strain bursts are widely observed in the plastic deformation of micron-sized
single crystals. In this paper, a stochastic crystal plasticity model is established by importing …
single crystals. In this paper, a stochastic crystal plasticity model is established by importing …
Spatiotemporal slip dynamics during deformation of gold micro-crystals
Intermittent plastic deformation in micro-crystals was resolved in both space and time,
yielding velocity profiles that peak in a range from approximately 1 μm/s to 100 μm/s. The …
yielding velocity profiles that peak in a range from approximately 1 μm/s to 100 μm/s. The …
Second-order work and strain burst in single-crystalline micropillar plasticity
Plastic deformation of small-scale crystals proceeds through a sequence of intermittent
plastic instabilities characteristic of strain bursts. In this work we construct the relation …
plastic instabilities characteristic of strain bursts. In this work we construct the relation …
Small-scale and intermittent plasticity based on dislocation cell continuum crystal plasticity model
H Guo, X Deng, F Shang - Acta Mechanica, 2025 - Springer
The recent experimental and theoretical studies indicate that the heterogeneous dislocation
cell structure in metal sample at micron scale plays a significance role in characterizing the …
cell structure in metal sample at micron scale plays a significance role in characterizing the …
Large strain burst induced by martensitic transformation in austenitic micropillars
The present work investigates, for the first time, the effects of martensitic transformation as
well as orientation on the stress-strain behaviour of austenitic micropillars. It is found that …
well as orientation on the stress-strain behaviour of austenitic micropillars. It is found that …
[HTML][HTML] The strain hardening of micro-sized face-centered-cubic single crystal metals: A crystal plasticity study
H Guo, C Li, X Zhang, F Shang - AIP Advances, 2018 - pubs.aip.org
Recent experimental and theoretical studies indicate the “external geometry” and “internal
structure” are the controlling factors to characterize the size-dependent plastic flow for micro …
structure” are the controlling factors to characterize the size-dependent plastic flow for micro …
Strain Avalanches in Microsized Single Crystals: Avalanche Size Predicted by a Continuum Crystal Plasticity Model
Plastic deformation of small crystals occurs by power-law distributed strain avalanches
whose universality is still debated. In this work we introduce a continuum crystal plasticity …
whose universality is still debated. In this work we introduce a continuum crystal plasticity …