Modeling strain rate effect on tensile strength of concrete using damage plasticity model

Ayhan, Bahar; Lale, Erol

doi:10.1016/j.ijimpeng.2021.104132

Cited by 9 publications

(1 citation statement)

References 51 publications

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“…The grouting specimen is a heterogeneous material with a complex internal structure, and the three-dimensional numerical model can effectively solve the problem of damage and energy dissipation of internal components, but indoor tests results don't be quantitatively analyzed (Lv et al, 2022;. Previous research results (Li et al, 2012;Ayhan et al, 2022;Dong et al, 2021) have proven that LS-DYNA software can effectively simulate the dynamic impact process and fracture mechanical properties of cement-based materials. Yu et al (2021) changed the parameters of the HJC constitutive model and studied the influence of the strength of aggregate and mortar on the overall performance.…”

Section: Introductionmentioning

confidence: 99%

Experimental and numerical research of crack propagation process and energy dissipation law of grouting specimens under radial impact load

Chang-xing

Sun²,

Gong³

et al. 2023

Front. Earth Sci.

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Different air pressures are used to conduct an impact test based on the split Hopkinson pressure bar (SHPB) test system to study the crack evolution process and energy dissipation law of the cemented rock under impact load. The failure mechanism of the specimens is analyzed from the perspective of dynamic failure process and energy dissipation. The spatial distribution of the specimen components visualized by the image reconstruction technology and the LS-DYNA mesoscopic model is established. Results show that the proportion of dissipated energy, the dynamic tensile strength and peak strain of the specimens increase with strain rate increase. The crack evolution process of the model is quantitatively described under an impact load, which is divided into four stages, namely, no crack stage, slow development stage, accelerated propagation stage and penetration stage. Compared with the indoor and simulation test result, the crack evolution process and failure modes are consistent under different strain rates. When the specimens are destroyed, the energy dissipation rate fluctuates from 10% to 13%. The dissipated energy of cement paste accounts for more than 90% of the total dissipated energy. The cement paste damages first and its strength has a great influence on the strength of the grouting specimens. This study provides a reference to evaluate the cemented rock under a dynamic load.

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