Near field dynamic modeling of saturated concrete impact failure

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Journal of Vibration and Shock ›› 2023, Vol. 42 ›› Issue (1) : 28-37.

WU Liwei, MA Qipeng, HUANG Dan

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Abstract

An intermediately homogenized peridynamic (IH-PD) model for saturated concrete has been proposed under the configuration of the ordinary state-based peridynamic theory, and the pore of saturated concrete is considered as well. The information from the composition at the mesoscale is linked to the macroscale fracture behavior in this model, where the heterogeneity of concrete is taken into account, and the calculation cost does not increase. The pore of concrete is implemented by deleting the bond between two material points, and its effect on the mechanical properties of concrete is further analyzed. Moreover, the effective bulk modulus and shear modulus of cement mortar in saturated concrete is obtained based on the two-phase spherical model. In the last, the validity of the proposed model and algorithms is established through simulating the wave propagation in a saturated concrete slab and the impact failure experimental test. The numerical results are in good agreement with the corresponding experimental observations.

Key words

saturated concrete / impact failure / intermediately homogenized model / peridynamics

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WU Liwei, MA Qipeng, HUANG Dan. Near field dynamic modeling of saturated concrete impact failure[J]. Journal of Vibration and Shock, 2023, 42(1): 28-37

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