Predicting the overall behavior of heterogeneous materials, from their local properties at the scale of heterogeneities, represents a critical step in the design and modeling of new materials. Within this framework, an internal variables approach for scale transition problem in elastic-viscoplastic
A self-consistent model of isotropic viscoplastic behavior in multiphase materials
โ Scribed by Richard G. Stringfellow; David M. Parks
- Publisher
- Elsevier Science
- Year
- 1991
- Tongue
- English
- Weight
- 936 KB
- Volume
- 7
- Category
- Article
- ISSN
- 0749-6419
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โฆ Synopsis
We propose a simple, straightforward self-consistent method for predicting the inelastic stress-strain behavior of multiphase materials. Each constituent phase is modeled as an isotropic, incompressible viscoplastic solid. A self-consistent scheme is used to derive the properties of the composite. A small, nonlinear set of equations emerges which is solved using standard numerical techniques. The method is applied to a two-phase material with fixed phase fractions. Model predictions are compared with experimental data and results of other models.
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