Microplane model for concrete subject to plane stresses
| Autor: | Claudio Floris, P.G. Gambarova |
|---|---|
| Rok vydání: | 1986 |
| Předmět: |
Nuclear and High Energy Physics
Materials science Shear stiffness Mechanical Engineering Cement paste Strain softening Nonlinear system Nuclear Energy and Engineering Shear (geology) General Materials Science Geotechnical engineering Composite material Mortar Safety Risk Reliability and Quality Waste Management and Disposal Test data Plane stress |
| Zdroj: | Scopus-Elsevier |
| ISSN: | 0029-5493 |
| DOI: | 10.1016/0029-5493(86)90069-5 |
| Popis: | The microplane model, originally introduced for the description of the progressive fracture of concrete and rock, proves in this paper to be suitable also to the description of the multiaxial behavior of concrete, subjected either to tension or to compression, with or without shear. The microcracking, which is the most relevant cause of nonlinearity, is assumed to be localized in the thin mortar layers (cement paste and fine aggregates) which separate the coarse aggregate particles: these layers, called “microplanes” or “weak planes”, are assumed to be present both at the microscopic and at the macroscopic level. Each microplane is characterized by a uniaxial constitutive relationship between the normal stress σn and the normal strain ϵn (the shear stiffness is disregarded). The function σn is formulated in such a way that - by superimposing the responses of the randomly oriented microplanes - the behavior of the concrete as a whole is adequately described (loading in compression, strain softening excluded; loading in tension, strain softening included; unloading either from previous tension or from previous compression). Attention is focused on plane stress situations. Comparisons are made with many test data on the biaxial behavior of concrete. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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