Steel fiber-reinforced concrete under impact loading dynamic constitutive equation

Ye, Zhong Bao; Huang, Rui Yuan; Li, Yong Chi; Li, Lin; Zhao, Kai; Zhang, Yong Liang; Ma, Jian; Lin, Jia

doi:10.1016/j.conbuildmat.2018.09.118

Cited by 22 publications

(6 citation statements)

References 11 publications

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“…The constitutive equation of a material describes the stress–strain relationship of the material under different loading conditions [ 40 , 41 ]. The empirical Johnson–Cook constitutive model was applied to describe the stress–strain relationship of ferrous and nonferrous metals, under conditions of high-strain rate and considerable deformation.…”

Section: Resultsmentioning

confidence: 99%

Spatial Constitutive Modeling of AA7050-T7451 with Anisotropic Stress Transformation

Wang

et al. 2022

Materials

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The mechanical properties of anisotropic materials are generally characterized based on the orthotropy or transverse isotropy. However, the two-dimensional plane stress problems cannot comprehensively characterize the anisotropy of materials. In this study, based on the theory of elasticity and the transformation of the three-dimensional space coordinate system, combined with the projection relationship of the Cauchy stress tensor of an arbitrary section, the transformation relationship of the elastic modulus, shear modulus, and stress–strain between the orthogonal and load coordinate systems are obtained. The orthotropic Johnson-Cook (JC) constitutive model of AA7050-T7451 aluminum alloy is modified by fitting, and the constitutive relationship at any spatial angle is theoretically calculated by combining the obtained spatial coordinate transformation matrix. The generated spatial constitutive model is verified and modified through experiments. The results demonstrate that the theoretical mechanical properties and the modified spatial constitutive model can accurately reflect the effect of the spatial angle on the material stress distribution.

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Section: Resultsmentioning

confidence: 99%

Spatial Constitutive Modeling of AA7050-T7451 with Anisotropic Stress Transformation

Wang

et al. 2022

Materials

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“…For the RULCC with fibers and rubber, due to the changes in the dynamic strength, the H-J-C model for concrete has to be modified, so that it can take into account the toughness and strength of the novel RULCC. Some researchers [52][53][54] have considered the influence of the strength and toughness of the fiber, and introduced reinforcement factors to adjust the yield surface equation. In this study, a normalized cohesive strength influence factor α, and a normalized pressure hardening influence factor β, are proposed to represent the characteristic parameters of the PE fibers and the size of the rubber.…”

Section: Optimized H-j-c Modelmentioning

confidence: 99%

Effect of rubber particles and fibers on the dynamic compressive behavior of novel ultra-lightweight cement composites: Numerical simulations and metamodeling

Huang

Deng

et al. 2021

Composite Structures

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“…Although impact caused a mesh of cracks, the crack-bridging effect of steel fibers prevented crack propagation, significantly improving the impact resistance of the concrete beams. Ye et al [15] conducted dynamic impact compression tests on steel fiber-reinforced concrete specimens and observed that the peak strain and peak stress of the steel fiber-reinforced concrete specimens increased with a higher fiber content and strain rate. Some plant fibers have been receiving increased attention from scientists in recent years as low-carbon environments have become increasingly important.…”

Section: Introductionmentioning

confidence: 99%

Dynamic Splitting Performance and Energy Dissipation of Fiber-Reinforced Concrete under Impact Loading

Cui,

Wang,

Zhang

et al. 2024

Materials

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In this paper, the influence of different fiber materials on the dynamic splitting mechanical properties of concrete was investigated. Brazil disc dynamic splitting tests were conducted on plain concrete, palm fiber-reinforced concrete, and steel fiber-reinforced concrete specimens using a split Hopkinson pressure bar (SHPB) test device with a 100 mm diameter and a V2512 high-speed digital camera. The Digital Image Correlation (DIC) technique was used to analyze the fracture process and crack propagation behavior of different fiber-reinforced concrete specimens and obtain their dynamic tensile properties and energy dissipation. The experimental results indicate that the addition of fibers can enhance the impact toughness of concrete, reduce the occurrence of failure at the loading end of specimens due to stress concentration, delay the time to failure of specimens, and effectively suppress the expansion of cracks. Steel fibers exhibit a better crack-inhibiting effect on concrete compared to palm fibers. The incident energy for the three types of concrete specimens is roughly the same under the same impact pressure. Compared with plain concrete, the energy absorption rate of palm fiber concrete is decreased, while that of steel fiber concrete is increased. Palm fiber-reinforced concrete and steel fiber-reinforced concrete have lower peak strains than plain concrete under the same loading duration. The addition of steel fibers significantly impedes the internal cracking process of concrete specimens, resulting in a relatively slow growth of damage variables.

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Steel fiber-reinforced concrete under impact loading dynamic constitutive equation

Cited by 22 publications

References 11 publications

Spatial Constitutive Modeling of AA7050-T7451 with Anisotropic Stress Transformation

Spatial Constitutive Modeling of AA7050-T7451 with Anisotropic Stress Transformation

Effect of rubber particles and fibers on the dynamic compressive behavior of novel ultra-lightweight cement composites: Numerical simulations and metamodeling

Dynamic Splitting Performance and Energy Dissipation of Fiber-Reinforced Concrete under Impact Loading

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