Modeling the Behavior of Concrete by Damage Mechanics with a Poisson's Ratio Variable
| Autor: | Hélène Dumontet, Rebiha Smahi, Youcef Bouafia, Mohand Said Kachi |
|---|---|
| Rok vydání: | 2014 |
| Předmět: |
Materials science
business.industry Traction (engineering) Modulus General Medicine Structural engineering Elasticity (physics) Poisson distribution Strength of materials Concrete - nonlinear calculation - rupture – Poisson's ratio – volumetric damage - deviatoric damage Poisson's ratio symbols.namesake Damage mechanics symbols Compressibility business |
| Zdroj: | Procedia Materials Science. 3:714-719 |
| ISSN: | 2211-8128 |
| DOI: | 10.1016/j.mspro.2014.06.117 |
| Popis: | We propose in this work a model for monitoring the behavior of non-linear elasticity of concrete in both compression and tension until the break. This model is determined by applying the principles of damage mechanics and fracture using the actual laws of nonlinear behavior usually admitted in the continuous mechanics of materials (Sargin relations for compression and Grelat relationship for traction). Studies carried to study the effect of hydrostatic concrete material indicate a change in the modulus of compressibility. Whereas in the modulus is related to the change in volume and is independent of the variable which affects the Young's modulus, a law of evolution of the Poisson's ratio is imposed by the existence of a current volumetric damage. The comparison of model calculations with experimental result presented in one hand, and with the results of calculation with the model of Mazars in the other hand, is very satisfactory. Applying relations changes adopted (evolution of Poisson's ratio, the damage evolution in unidirectional) has correctly describe and track the real behavior of concrete and up to rupture. |
| Databáze: | OpenAIRE |
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