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Summary: The objective of the present paper is to present a numerical study on the penetration performance of concrete targets with 2 different water contents. Numerical analysis has been performed by using the finite element code Abaqus/Explicit, in which a coupled elastoplastic damage model has been developed for saturated/unsaturated concrete under a wide range of confining pressures. The performance of proposed model has been firstly verified by simulating the triaxial compression tests and penetration tests realized with saturated/dry concretes. Comparisons of available experimental results and numerical simulations show that the proposed model is able to reproduce satisfactorily the mechanical behavior of saturated and dry concretes. A higher failure stress and a more important pores closing are generally obtained in dry concrete samples with respect to saturated ones. Furthermore, the main observed patterns of penetration test realized with saturated concrete targets are also satisfactorily simulated by the numerical results. Therefore, the proposed model is used to numerically predict the penetration performance of dry concrete target, and the penetration performance of dry/saturated concrete target is discussed. We observe that in dry concrete target, the penetration of projectile is strongly declined, and a smaller damage zone is created. The numerical predictions and discussions can help engineers to enhance their understandings on the influence of hydraulic conditions on structural vulnerability of concrete structures subjected to near‐field detonations or impacts. [ABSTRACT FROM AUTHOR]

To enhance the understanding of interaction between elastoplastic damage behavior of concrete and penetration behavior of projectile, this study develops an elastoplastic damage model for concrete with an emphasis on the pressure dependence of volume change. Numerical analysis is performed by using the finite element code Abaqus/Explicite, in which the proposed model is incorporated. In order to understand the effect of concrete volume change and concrete damage on the penetration behavior of projectile, a series of parametric studies are carried out. Finally, some projectile penetration tests are simulated by using the proposed model. The numerical results reproduce satisfactorily the main patterns observed in the projectile penetration tests. The interpretation and discussion of numerical results help the engineers and ballisticians complete their knowledge on the vulnerability of concrete structures. [ABSTRACT FROM AUTHOR]