Experimental and numerical research on the effect of ogive-nose projectile penetrating UR50 ultra-early-strength concrete

Wang, Wei; Song, Xiaodong; Jiang, Yang; Liu, Fei; Gao, Weiliang

doi:10.1016/j.cemconcomp.2022.104902

Cited by 7 publications

(4 citation statements)

References 31 publications

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“…Based on the experimental results, they proposed a semi-empirical formula for predicting the penetration depth. Wang [19] performed high-speed impact experiments on UR50 ultra-early-strength concrete targets using a 35 mm smooth bore cannon and 35CrMnSiA reduced-ratio ogive-nose projectile. They used the ANSYS 16.0/LD-DYNA finite element software to investigate the effects of compressive strength and projectile impact velocity on the depth of penetration (DOP) of UR50 ultra-early-strength concrete.…”

Section: Introductionmentioning

confidence: 99%

Impact Resistance of Ultra-High-Performance Concrete Composite Structures

Ning,

Ren,

Wang

et al. 2023

Materials

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Ultra-high-performance concrete (UHPC) is a cement-based material with excellent impact resistance. Compared with traditional concrete, it possesses ultra-high strength, ultra-high toughness, and ultra-high durability, making it an ideal material for designing structures with impact resistance. The research on the impact resistance performance of UHPC and its composite structures is of great significance for the structural design of protective engineering projects. However, currently, there is still insufficient research on the impact resistance performance of UHPC composite structures. To study the impact resistance performance, experiments were conducted on UHPC targets using high-speed projectiles. The results were compared with impact tests on granite targets. The results indicated that when subjected to projectile impact, the UHPC targets exhibited smaller surface craters compared with the granite targets, while the penetration depth was lower in the granite targets. Afterwards, the process of a projectile impacting the UHPC composite structure was numerically simulated using ANSYS 16.0/LS-DYNA finite element software. The numerical simulation results of penetration depth and crater diameter were in good agreement with the experimental results, which indicates the rationality of the numerical model. Based on this, further analysis was carried out on the influence of impact velocity, impact angle, and reinforcement ratio on the penetration depth of the composite structure. The results show that the larger the incident angle or the smaller the velocity of the projectile is, the easier it is to deflect the projectile. There is a linear relationship between penetration depth and reinforcement ratio; as the reinforcement ratio increases, the penetration depth decreases significantly. This research is of great significance in improving the safety and reliability of key projects and also contributes to the application and development of ultra-high-performance materials in the engineering field.

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Section: Introductionmentioning

confidence: 99%

Impact Resistance of Ultra-High-Performance Concrete Composite Structures

Ning,

Ren,

Wang

et al. 2023

Materials

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“…This concrete is characterized by ultra-high strength, ultra-high toughness, ultra-impact resistance, and ultra-high durability. Wei et al [ 27 , 28 ] also researched the mechanical properties and penetration resistance of this high-density concrete. The density of foamed concrete was relatively low, and the density span was large, ranging from 300 kg/m³ to 1600 kg/m³.…”

Section: Introductionmentioning

confidence: 99%

Analytical Study of SH Wave Scattering by a Circular Pipeline in an Inhomogeneous Concrete with Density Variation

et al. 2023

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In this paper, the shear horizontal (SH) wave scattering by a circular pipeline in an inhomogeneous concrete with density variation is studied. A model of inhomogeneous concrete with density variation in the form of a polynomial-exponential coupling function is established. By using the complex function method and conformal transformation, the incident and scattering wave field of SH wave in concrete are obtained, and the analytic expression of dynamic stress concentration factor (DSCF) around the circular pipeline is given. The results show that the inhomogeneous density parameters, the wave number of the incident wave and the angle of the incident wave in concrete are important factors affecting the distribution of dynamic stress around the circular pipe in concrete with inhomogeneous density. The research results can provide a theoretical reference and a basis for analyzing the influence of circular pipeline on elastic wave propagation in an inhomogeneous concrete with density variation.

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“…Reinforced concrete is widely used in civil engineering structures [ 1 , 2 ]. With the rapid development of the economy, many important economic facilities are threatened by accidental explosions and terrorist attacks [ 3 ].…”

Section: Introductionmentioning

confidence: 99%

Analysis of the Overpressure Fields in a Shock Tube with Multi-Point Initiation

Chen

Ren²,

Zhao³

et al. 2023

Sensors

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Shock tubes can carry out dynamic mechanical impact tests on civil engineering structures. The current shock tubes mostly use an explosion with aggregate charge to obtain shock waves. Limited effort has been made to study the overpressure field in shock tubes with multi-point initiation. In this paper, the overpressure fields in a shock tube under the conditions of single-point initiation, multi-point simultaneous initiation, and multi-point delayed initiation have been analyzed by combining experiments and numerical simulations. The numerical results match well with the experimental data, which indicates that the computational model and method used can accurately simulate the blast flow field in a shock tube. For the same charge mass, the peak overpressure at the exit of the shock tube with the multi-point simultaneous initiation is smaller than that with single-point initiation. As the shock waves are focused on the wall, the maximum overpressure on the wall of the explosion chamber near the explosion zone is not reduced. The maximum overpressure on the wall of the explosion chamber can be effectively reduced by a six-point delayed initiation. When the interval time is less than 10 ms, the peak overpressure at the nozzle outlet decreases linearly with the interval of the explosion. When the interval time is greater than 10 ms, the overpressure peak remains unchanged.

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Experimental and numerical research on the effect of ogive-nose projectile penetrating UR50 ultra-early-strength concrete

Cited by 7 publications

References 31 publications

Impact Resistance of Ultra-High-Performance Concrete Composite Structures

Impact Resistance of Ultra-High-Performance Concrete Composite Structures

Analytical Study of SH Wave Scattering by a Circular Pipeline in an Inhomogeneous Concrete with Density Variation

Analysis of the Overpressure Fields in a Shock Tube with Multi-Point Initiation

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