A new analytical model for the low-velocity perforation of thin steel plates by hemispherical-nosed projectiles

Chen, Changhai; Zhu, Xiao; Hou, Hetao; Tian, Xiaobin; Xiao-le, Shen

doi:10.1016/j.dt.2017.06.002

Cited by 9 publications

(5 citation statements)

References 30 publications

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“…They attempted to use the energy conservation principle to compute the residual velocity of hemispherical projectile shape impacting thin steel plates at low velocities by establishing a new analytical model. Figure 5 shows an excellent agreement between the curve fit predictions and the experimental data of Chen et al [27], which also agreed very well with the analytical model established in this study, and a solitary straightforward equation predicted the penetrant residual velocity in spite of different projectile geometry and a wide range of plate thicknesses. The correlation produced for the data used in this study showed exceptional agreement in calculating the penetrant residual velocity.…”

Section: Discussionsupporting

confidence: 87%

“…Furthermore, the curve fitted equation showed a good agreement with experimental data compared to Equation (17), especially for composite target materials. Data was also taken from Chen et al [27] for additional comparison. They attempted to use the energy conservation principle to compute the residual velocity of hemispherical projectile shape impacting thin steel plates at low velocities by establishing a new analytical model.…”

Section: Discussionmentioning

confidence: 99%

“…Data was also taken from Chen et al [27] for additional comparison. They attempted to use the energy conservation principle to compute the residual velocity of hemispherical projectile shape impacting thin steel plates at low velocities by establishing a new analytical model.…”

Section: Discussionmentioning

confidence: 99%

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A Simplified Approach for the Determination of Penetrant Residual Velocity for Penetration Processes

Alhulaifi

2022

Designs

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The study’s main aim was to predict the penetrant residual velocity, with it being a vital output parameter in the projectile target interaction. The ballistics have been probed on a wide spectrum of impact velocities for different applications. Determination of the residual velocity by analytical methods entails the use of the impulse momentum principle, and the process is further challenged by the necessary inclusion of various variables that directly affect the calculation of the residual velocity. These problems can be overcome by adopting a non-dimensional approach by determining the combination of variables required for the penetration process by carrying out and validating the non-dimensionalization of the pertinent variables. The process discussed in this study provides a reasonable correlation of the non-dimensional parameters, which was used to estimate and validate penetrant residual velocity. A generalized solution predicting the penetrator residual velocity for a wide range of materials for a variety of impact velocities is proposed. The result of this correlation was validated against the published data, and the method was largely in agreement, showing the robustness of the proposed finding.

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Section: Discussionsupporting

confidence: 87%

Section: Discussionmentioning

confidence: 99%

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A Simplified Approach for the Determination of Penetrant Residual Velocity for Penetration Processes

Alhulaifi

2022

Designs

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“…The impact behavior of metal plates is a complex problem because it depends on a significant number of parameters of the projectile (mainly projectile nose shape, length, initial impact velocity, diameter, and nose impact angle), the plate (mainly thickness, material hardness, monolithic plate or sandwich configuration), and testing parameters (initial temperature and boundary conditions) [5][6][7].…”

Section: Introductionmentioning

confidence: 99%

Experimental and Numerical Study of the Thermo-Viscoplastic Behavior of NICRO 12.1 for Perforation Tests

et al. 2020

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Dynamic impact tests using thin metal plates for ballistic characterization have received significant attention in recent years. The Johnson–Cook (J–C) model is extensively used in numerical modeling of impact and penetration in metals. The AISI (American Iron and Steel Institute) 301 steel family presents good impact behavior, excellent formability, and high corrosion resistance. Thus, NICRO (Nickel and Hard Chrome Plated Steel) 12.1 (part of the AISI 301 steel family) was chosen in this work, although parameters of the J–C model or impact results were not found in the literature. In this work, NICRO 12.1 steel plates, were characterized in ballistics with an initial impact velocity up to 200 m/s and three shape nose projectiles. The Johnson–Cook parameters for the NICRO 12.1 steel were calculated for a large range of temperatures and strain rates. Impact tests were carried out using three projectiles: conical, hemispherical, and blunt. The ballistic curves, failure mode, and maximum deformation obtained with each projectile, experimentally and numerically, were compared, and a good correlation was obtained.

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“…As regards projectile residual velocity, Peng et al [19,20] conducted perforation tests on ultrahigh-performance steel fiber-reinforced concrete (UHP-SFRC) targets and derived a semianalytical model for the residual velocity of projectiles perforating concrete targets, achieving a high accuracy in the prediction of the residual velocity for segmented concrete targets with a rear steel liner. Chen et al [21] carried out trajectory tests on thin steel plates; based on the principle of energy conservation, a new residual velocity prediction model for hemispherical projectiles perforating thin steel plates at a low speed was established. According to a modified energy theory and existing ballistic limit velocity formulas, Grisaro and Dancygier [22] adopted a semiempirical and semianalytical method to define a formula for predicting the residual velocity through concrete targets.…”

Section: Introductionmentioning

confidence: 99%

Theoretical and Numerical Investigation on Perforation Resistance of Monolithic and Segmented Concrete Targets with Steel Liners under Normal Penetration

Cheng

Xiao

Zhang

2019

Advances in Civil Engineering

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Steel-concrete composites are important armor protective materials with the increasing power of precision-guided weapons. In this study, the formula of residual velocity as well as the ratio between residual and initial kinetic energy (Er/E0) for concrete targets with a rear steel liner was derived. By establishing finite element models of steel liner concrete targets through ANSYS/LS-DYNA, the effect of the steel liner layout on the perforation resistance was analyzed for both monolithic and segmented concrete targets, which were compared in terms of projectile kinematics characteristics, projectile energy consumption, and target damages. Four main conclusions were drawn: (1) a residual velocity prediction model of concrete targets with a rear steel liner was accurately proposed for the first time when velocity reduction coefficient η was 0.15 and the derived Er/E0 could be used to evaluate their corresponding perforation resistance; (2) moving back the steel liners enhanced the perforation resistance of both monolithic and segmented targets, but the performance of the latter was inferior to that of the former, which was reduced by 10%–16% under the same conditions; (3) during middle- and low-speed perforations, the projectile impact force was more influenced by the contact stiffness than the impact velocity; and (4) regarding the segmented targets, the perforation resistance of the 2nd target was better than the 1st target, which consumed about 10%–20% more projectile kinetic energy.

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A new analytical model for the low-velocity perforation of thin steel plates by hemispherical-nosed projectiles

Cited by 9 publications

References 30 publications

A Simplified Approach for the Determination of Penetrant Residual Velocity for Penetration Processes

A Simplified Approach for the Determination of Penetrant Residual Velocity for Penetration Processes

Experimental and Numerical Study of the Thermo-Viscoplastic Behavior of NICRO 12.1 for Perforation Tests

Theoretical and Numerical Investigation on Perforation Resistance of Monolithic and Segmented Concrete Targets with Steel Liners under Normal Penetration

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