Abstract
The paper considers the influence of multiscale plastic flow localization on rotational deformation modes and σ-ɛ curves by analyzing the entropy production and equation of state of a deformed solid. It is shown that if the rotational deformation modes are fully self-consistent, the σ-ɛ curve changes monotonically. If not, the curve reveals jerks or serrations due to nonlinear wave relaxation of stresses associated with macroscale non-compensated material rotations. At high loading rates, the rotational deformation modes attain self-consistency by the mechanism of dynamic rotations.
| Original language | English |
|---|---|
| Pages (from-to) | 8-12 |
| Number of pages | 5 |
| Journal | Physical Mesomechanics |
| Volume | 18 |
| Issue number | 1 |
| DOIs | |
| Publication status | Published - 2015 |
| Externally published | Yes |
Keywords
- dynamic rotations
- entropy production
- equation of state
- plastic shear localization
- rotational deformation modes
- serrations
ASJC Scopus subject areas
- Condensed Matter Physics
- Surfaces and Interfaces
- Mechanics of Materials
- Materials Science(all)