Abstract
Herein we investigate the incremental structure of several constitutive theories-elasticity, single and multiple mechanisms elastoplasticity, and vertex plasticity-in the case of idealized granular materials. Based on numerical simulations, we determine the incremental strains that result from a series of stress increments with an identical amplitude but different directions. Idealized granular materials are found to exhibit an incrementally piecewise-linear behavior that is described by elastoplasticity with a single mechanisms, and a nonassociative flow rule. The numerical simulations revealed no evidence for the incremental nonlinearities of multiple mechanisms plasticity or vertex plasticity.
Original language | English (US) |
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Pages (from-to) | 879-908 |
Number of pages | 30 |
Journal | International Journal of Plasticity |
Volume | 10 |
Issue number | 8 |
DOIs | |
State | Published - 1994 |
Externally published | Yes |
ASJC Scopus subject areas
- Materials Science(all)
- Mechanics of Materials
- Mechanical Engineering