Numerical modelling the elastoplastic damage behaviour of dry and saturated concrete targets subjected to rigid projectile penetration

Abstract : The objective of the present paper is to present a numerical study on the influence of free water content on the penetration performance of concrete targets. Numerical analysis has been performed by using the finite element code Abaqus/Explicit in which a coupled elastoplastic damage model is specially developed for saturated and unsaturated concretes under a wide range of confining pressures. The proposed model is used to simulate both triaxial compression tests and penetration tests realized on saturated and dry concrete samples. Comparisons of available test results and numerical simulations show that the proposed model is able to predict satisfactorily the mechanical behaviour of saturated and dry concretes as well as the main observed patterns of penetration test performed on saturated concrete target. The proposed model is then used for the numerical prediction of penetration tests performed on dry concrete targets. Finally, the influence of free water content, tensile damage and softening behaviour on the penetration performance of concrete target is analyzed numerically by performing a series of parametric study. The numerical predictions and discussions can help engineers to enhance their understandings on the influence of hydraulic conditions on structural vulnerability of structures in concrete subjected to near-field detonations or impacts.
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International Journal for Numerical and Analytical Methods in Geomechanics, Wiley, In press
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Dernière modification le : jeudi 26 juillet 2018 - 12:08:57
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Hanbing Bian, Yun Jia, Christophe Pontiroli, Jian-Fu Shao. Numerical modelling the elastoplastic damage behaviour of dry and saturated concrete targets subjected to rigid projectile penetration. International Journal for Numerical and Analytical Methods in Geomechanics, Wiley, In press. 〈hal-01635818〉

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