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- W2504803722 abstract "A new constitutive model is proposed for the descri ption of the coupled elasto-plastic- damage behaviour of concrete under a wide range of confining pressure. Based on experimental investigation, two plastic flow mechanisms are iden tified: plastic shear mechanism at low confining pressure and plastic pore collapse mechanism at hig h confining pressure. Furthermore, the increase of water saturation in concrete structure induces the diminution of capillary pressure in liquid contact which leads to an additional plastic deformation. C onsequently, influence of water saturation state on the mechanical behaviour is also studied in this pa per. This model is validated by comparisons with triaxial compressive tests conducted on concrete sp ecimen with GIGA press at the laboratory 3S-R (Universite Joseph Fourier - Grenoble). Then, simul ations of dynamic penetration tests with rigid projectile on concrete slabs were carried out so as to validate numerical approach. From those observations a new elastoplastic model c oupled with damage for the description of mechanical behaviour of concrete has been developed. The verification of the proposed model is presented by comparing numerical simulations and experimental data obtained under triaxial compressive loadings in saturated and dried conditi ons. To evaluate the water content effect on projectile penetration of concrete structures, CEA-Gramat has realized dynamic penetration tests on thick sat urated concrete slabs. Penetration depths, projecti le" @default.
- W2504803722 created "2016-08-23" @default.
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- W2504803722 date "2013-05-13" @default.
- W2504803722 modified "2023-09-26" @default.
- W2504803722 title "Hydromechanical modeling of concrete under high confinement: modelling, validation, simulations" @default.
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- W2504803722 hasPublicationYear "2013" @default.
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