High-velocity Penetration of Concrete Targets with Three Types of Projectiles: Experiments and Analysis

Zhang, Shuang; Wu, Haijun; Zhang, Xinxin; Liu, Jiancheng; Huang, Fenglei

doi:10.1590/1679-78253753

Cited by 16 publications

(6 citation statements)

References 12 publications

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“…where, 𝑎𝑎 1 , 𝑎𝑎 2 and 𝑎𝑎 3 are inertial, viscosity and strength coefficients, respectively [31,32]. 𝜌𝜌 𝑐𝑐 is the density of concrete targets and 𝑣𝑣 𝑛𝑛 is the normal velocity of the projectile.…”

Section: Prediction Model Of Penetration-depthmentioning

confidence: 99%

Study on the penetration of elliptical cross-section projectiles into concrete targets: theory and experiment

Liu

Zhang

Wei

et al. 2022

Lat. Am. j. solids struct.

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To better understand the penetration mechanism of the elliptical cross-section projectile (ECSP) into semiinfinite concrete target, penetration experiments using three types of ECSPs with different shape ratios (1, 1.25 and 1.61) and with striking velocities ranged from 550 m/s to 1050 m/s were conducted. Penetration depths, penetration trajectory and mass erosion rates of the projectile were obtained after the experiments. The experiment results show that the penetration performance and ballistic stability of the ECSP are equivalent to those of the circular cross-section projectile (CCSP). Based on the theory of complex variable function and conformal transformation, a semi-analytical model which can calculate the cavity boundary stress distribution of elliptical section cavity controlled by the displacement boundary condition was established and the model was validated by comparing the model degenerate solution with Kirsch problem results. Theoretical calculation results show that the radial stress of elliptical section cavity increases progressively from the minor axis to the major axis. In addition, a formula combining with the semi-analytical theoretical model and the local interaction theory was developed. The predicted penetration depths were compared with 30 groups of experiment data with different projectile parameters and striking velocities and coincide quite well with the corresponding experimental data. Finally, the influence of shape ratio and caliberradius-head (CRH) on the penetration performance of projectile and the application prospect of ECSPs on hypersonic weapon platform were studied.

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Section: Prediction Model Of Penetration-depthmentioning

confidence: 99%

Study on the penetration of elliptical cross-section projectiles into concrete targets: theory and experiment

Liu

Zhang

Wei

et al. 2022

Lat. Am. j. solids struct.

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show abstract

“…More recently, Rajput et al 15 used finite element analysis to investigate the ballistic perforation of unreinforced and reinforced concrete impacted with striking velocities of 53 to 220 m/s. Zhang et al 16 conducted finite element analyses of different projectiles, ie, ogive-nose, double-ogive-nose, and grooved-tapered, perforating concrete targets with striking velocities between 1000 and 1360 m/s and validated experimental results. Smith et al 17,18 used lattice discrete particle models to simulate the perforation of UHPC using a flat nose and ogive projectile with varying striking between 1000 and 3500 m/s.…”

Section: Introductionmentioning

confidence: 99%

Penetration modeling of ultra‐high performance concrete using multiscale meshfree methods

Sparks¹,

Sherburn²,

Heard³

et al. 2021

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Terminal ballistics of concrete is of extreme importance to the military and civil communities. Over the past few decades, ultra‐high performance concrete (UHPC) has been developed for various applications in the design of protective structures because UHPC has an enhanced ballistic resistance over conventional strength concrete. Developing predictive numerical models of UHPC subjected to penetration is critical in understanding the material's enhanced performance. This study employs the advanced fundamental concrete (AFC) model, and it runs inside the reproducing kernel particle method (RKPM)‐based code known as the nonlinear meshfree analysis program (NMAP). NMAP is advantageous for modeling impact and penetration problems that exhibit extreme deformation and material fragmentation. A comprehensive experimental study was conducted to characterize the UHPC. The investigation consisted of fracture toughness testing, the utilization of nondestructive microcomputed tomography analysis, and projectile penetration shots on the UHPC targets. To improve the accuracy of the model, a new scaled damage evolution law (SDEL) is employed within the microcrack informed damage model. During the homogenized macroscopic calculation, the corresponding microscopic cell needs to be dimensionally equivalent to the mesh dimension when the partial differential equation becomes ill posed and strain softening ensues. Results of numerical investigations will be compared with results of penetration experiments.

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“…More recently, Rajput et al used finite element analysis to investigate the ballistic perforation of unreinforced and reinforced concrete impacted with striking velocities of 53 to 220 m/s. Zhang et al conducted finite element analyses of different projectiles, ie, ogive‐nose, double‐ogive‐nose, and grooved‐tapered, perforating concrete targets with striking velocities between 1000 and 1360 m/s and validated experimental results. Smith et al used lattice discrete particle models to simulate the perforation of UHPC using a flat nose and ogive projectile with varying striking between 1000 and 3500 m/s.…”

Section: Introductionmentioning

confidence: 99%

Penetration modeling of ultra‐high performance concrete using multiscale meshfree methods

Sparks

Sherburn

Heard

et al. 2019

Num Anal Meth Geomechanics

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Summary Terminal ballistics of concrete is of extreme importance to the military and civil communities. Over the past few decades, ultra‐high performance concrete (UHPC) has been developed for various applications in the design of protective structures because UHPC has an enhanced ballistic resistance over conventional strength concrete. Developing predictive numerical models of UHPC subjected to penetration is critical in understanding the material's enhanced performance. This study employs the advanced fundamental concrete (AFC) model, and it will run inside the reproducing kernel particle method (RKPM)‐based code known as the nonlinear meshfree analysis program (NMAP). NMAP is advantageous for modeling impact and penetration problems that exhibit extreme deformation and material fragmentation. A comprehensive experimental study was conducted to characterize the UHPC. The investigation consisted of fracture toughness testing, the utilization of nondestructive microcomputed tomography analysis, and lastly projectile penetration shots on the UHPC targets. To improve the accuracy of the model, a new scaled damage evolution law (SDEL) is employed within the microcrack informed damage model. During the homogenized macroscopic calculation, the corresponding microscopic cell needs to be dimensionally equivalent to the mesh dimension when the partial differential equation becomes ill posed and strain softening ensues. To ensure arbitrary mesh geometry for which the homogenized stress‐strain curves are derived, a size scaling law is incorporated into the homogenized tensile damage evolution law. This ensures energy‐bridging equivalence of the microscopic cell to the homogenized medium irrespective of arbitrary mesh geometry. Results of numerical investigations will be compared with results of penetration experiments.

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High-velocity Penetration of Concrete Targets with Three Types of Projectiles: Experiments and Analysis

Cited by 16 publications

References 12 publications

Study on the penetration of elliptical cross-section projectiles into concrete targets: theory and experiment

Study on the penetration of elliptical cross-section projectiles into concrete targets: theory and experiment

Penetration modeling of ultra‐high performance concrete using multiscale meshfree methods

Penetration modeling of ultra‐high performance concrete using multiscale meshfree methods

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