Abstract
A Taylor-based nonlocal theory of plasticity is proposed to account for the size dependence of plastic deformation at micron and submicron length scales. This theory is intended to link Taylor's model of dislocation hardening to a nonlocal theory of plasticity in which the density of geometrically necessary dislocations is expressed as a nonlocal integral of the strain field. We make application of this theory to void growth, cavitation instabilities and particle-reinforced composites, as well as comparison with experiments on micro-torsion, micro-bending and micro-indentation.
| Original language | English (US) |
|---|---|
| Pages (from-to) | 2615-2637 |
| Number of pages | 23 |
| Journal | International Journal of Solids and Structures |
| Volume | 38 |
| Issue number | 15 |
| DOIs | |
| State | Published - Apr 2001 |
Keywords
- Consitutive theory
- Dislocations
- Non-local theory
- Plasticity
- Strain gradient plasticity
- Strengthening mechanics
ASJC Scopus subject areas
- Modeling and Simulation
- Materials Science(all)
- Condensed Matter Physics
- Mechanics of Materials
- Mechanical Engineering
- Applied Mathematics