Abatraet-The Nadai elastic-plastic boundary is introduced to d&e the core region, instead of a core region with a constant distance r from the crack tip and a core region with the Mises elastiqlastic boundary. Taking into account fracture parameters along the Nadai elastitiplastic boundary, two impr
Ultimate criteria for materials with different properties in biaxial tension and compression: a micromechanical approach
โ Scribed by Mauro Ferrari; Vladimir T. Granik
- Publisher
- Elsevier Science
- Year
- 1995
- Tongue
- English
- Weight
- 846 KB
- Volume
- 202
- Category
- Article
- ISSN
- 0921-5093
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โฆ Synopsis
In a previous communication to this journal, the authors introduced a micromechanical method for developing ultimate-state, plane stress criteria, which was in turn based on the doublet-mechanical theory of solids. In this article, doublet mechanics is employed to derive microstructurally based yield and failure criteria containing four dimensionless parameters. This permits the exact representation of five independent ultimate plane stress states: uniaxial tension and compression, pure shear, and equibiaxial (hydrostatic) tension and compression. The novel criteria are shown to be successfully applicable to a variety of macroscopically continuous solids, including cast iron and several alloys, as well as to discontinua such as plain and short-steel-fiber reinforced concrete.
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