Experimental and numerical studies on dynamic behavior of reinforced UHPC panel under medium-range explosions

Su, Qiong; Wu, Hao; Sun, H.; Fang, Qin

doi:10.1016/j.ijimpeng.2020.103761

Cited by 59 publications

(7 citation statements)

References 56 publications

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“…In this paper, the compressive and tensile softening parameters are determined through a comparison of the stressstrain relationships obtained experimentally. Moreover, to describe the volumetric properties of HPFRCC, the EOS parameters suggested by Su et al (Su et al, 2021) based on UHPC planar impact test data are adopted. In the EOS, the volumetric stain-pressure curve and bulk modulus were obtained from low to high pressures, and the elastic bulk modulus can be modified according to the Young's modulus and Poisson's ratio of the HPFRCC depending on the material test data.…”

Section: Constitutive Modelmentioning

confidence: 99%

Impact simulations for high-performance fiber-reinforced cement composites using a coupled finite element and smoothed particle Galerkin method

Lee

Kwak

2022

International Journal of Damage Mechanics

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This paper presents a projectile impact analysis of high-performance fiber-reinforced cement composite (HPFRCC) structures based on the coupling of the finite element method (FEM) and the smoothed particle Galerkin (SPG) model in the LS-DYNA program. The K&C material model is calibrated for the HPFRCC. Through a quasi-static analysis using the calibrated model, the criteria for the element size of a FEM and the nodal particle distance of the SPG model are determined. Numerical simulations of the coupled SPG-FEM model are conducted to predict the structural responses of HPFRCC structures subjected to high impact velocities ranging from 342 m/s to 808 m/s. The results for the coupled model are compared with experimental data as well as numerical results for a pure FEM model to determine the relative accuracy and efficiency of a coupled FEM and SPG model for the large deformation problem. The convergence of the numerical results is also investigated in terms of the residual velocity and penetration depth. Moreover, the effects of various parameters on the models are discussed through a sensitivity analysis, and suitable parameter ranges that improve the accuracy of the numerical results are suggested.

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Section: Constitutive Modelmentioning

confidence: 99%

Impact simulations for high-performance fiber-reinforced cement composites using a coupled finite element and smoothed particle Galerkin method

Lee

Kwak

2022

International Journal of Damage Mechanics

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“…Therefore, it is of great significance to improve the blast‐resistant performance of concrete. There are several methods to achieve this goal, such as enhancing concrete's strength 4–6 or adding fiber as distributed reinforcement 7,8 …”

Section: Introductionmentioning

confidence: 99%

“…Therefore, it is of great significance to improve the blast-resistant performance of concrete. There are several methods to achieve this goal, such as enhancing concrete's strength [4][5][6] or adding fiber as distributed reinforcement. 7,8 Ultra-high performance concrete (UHPC) has excellent mechanical properties, especially high compressive strength.…”

Section: Introductionmentioning

confidence: 99%

Numerical investigation on dynamic performance of reinforced ultra‐high ductile concrete–ultra‐high performance concrete panel under explosion

Liao

Xie

2022

Structural Concrete

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Ultra-high ductile concrete (UHDC) is known for ultra-high tensile ductility, and ultra-high performance concrete (UHPC) has ultra-high compressive strength. Reinforced UHDC-UHPC panels that are made of UHDC and UHPC (i.e., hybrid panels) are expected to have excellent blast-resistance capacity.However, only limited research is devoted to study the dynamic performance of the panels under explosion. To further investigate the dynamic performance of such kind of composite structural system, numerical simulations are carried out through LS-DYNA. The developed material models are used for describing the mechanical properties of UHDC, UHPC and steel bars at high strain rate.Based on the corresponding field blast test results, the feasibility and accuracy of the adopted finite element models are validated. Furthermore, parameter analysis is applied for investigating the effects of scale distance, reinforcement ratio and concrete type on the dynamic performance. It is concluded that the maximum deflection of reinforced UHDC-UHPC panels reduces with increasing scale distance and reinforcement ratio. Reinforced UHDC-UHPC panels possess excellent blast-resistance capacity in comparison with reinforced concrete panels.

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“…Prestressed concrete structures, steel tube structures and concrete-filled steel tube structures to date have been the preferred components of choice used in long-span blast-resistant structures. Recent improvements in the blast-resistant performance of the long span blast-resistant structure have typically been achieved through the use of innovative structural systems and new materials: examples of innovative structural systems include the steel–concrete–steel composite (SCS) structure (Liew and Wang, 2011; Yan et al, 2015) and the prestressed reinforced concrete structure (Cheng et al, 2013; Chen et al, 2015), while an example of a new material for enhanced blast resistance is ultra-high-performance concrete (UHPC) (Zhang et al, 2016; Su et al, 2021).…”

Section: Introductionmentioning

confidence: 99%

Blast resistance of prestressed steel-grouting composite beams under close-in explosions: Experiment and numerical analysis

Liu

Fang

Chen

et al. 2022

Advances in Structural Engineering

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To increase the blast resistance of reinforced concrete or steel–concrete composite structures with long span, an innovative prestressed steel-grouting material composite beam with a hollow web is proposed. In the beam, the flange is filled with grouting material, and an I-type steel web is used to strengthen the shear capacity, and a prestressed tendon is placed in lower flange to improve the flexure resistance. The following three specimens were designed: a double hollow tube, a double tube filled with grouting material, and a prestressed double tube filled with grouting material. The specimens were tested against close-in blast, and overpressure, deformation, and strain were recorded. In order to further understand the blast-resistant performance of the beam, a finite element model was developed by commercial software LS-DYNA. A good agreement between the numerical predictions and test data was observed. It is indicated that the proposed prestressed steel-grouting material composite beam with hollow web exhibits excellent blast-resistant performance.

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Experimental and numerical studies on dynamic behavior of reinforced UHPC panel under medium-range explosions

Cited by 59 publications

References 56 publications

Impact simulations for high-performance fiber-reinforced cement composites using a coupled finite element and smoothed particle Galerkin method

Impact simulations for high-performance fiber-reinforced cement composites using a coupled finite element and smoothed particle Galerkin method

Numerical investigation on dynamic performance of reinforced ultra‐high ductile concrete–ultra‐high performance concrete panel under explosion

Blast resistance of prestressed steel-grouting composite beams under close-in explosions: Experiment and numerical analysis

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