Rigid elliptical cross-section ogive-nose projectiles penetration into concrete targets

Dai, Xianghui; Wang, Kehui; Li, Mingrui; Duan, Jian; Bingwen, Qian; Zhou, Gang

doi:10.1016/j.dt.2020.05.011

Cited by 10 publications

(6 citation statements)

References 22 publications

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“…Notably, as can be seen from Ref. [21], the value of CRH of an ECSP varies with the azimuth. Namely, it increases progressively from the minor axis to the major axis along the circumference.…”

Section: Experimental Programmentioning

confidence: 72%

“…Integrating equation (21) in the plastic zone can obtain the plastic field stress distribution. As shown in Fig.…”

Section: Solving the Cavity Boundary Stress Olving The Stress Functionmentioning

confidence: 99%

“…And it is unable to make a reasonable explanation for the causes of the circumferential stress distribution difference of the ECSP. Dai et al [21] studied the penetration characteristics of the ECSP and analyzed the influence of CRH,axial stress, and resistance on penetration performance of the ECSP. Although the penetration mechanism of the ECSP was discussed in many aspects, the resistance expression in the theoretical model was still based on the dynamic cavity expansion theory, and the applicability of the resistance expression on ECSPs remains to be studied.…”

Section: Introductionmentioning

confidence: 99%

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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: Experimental Programmentioning

confidence: 72%

“…Integrating equation (21) in the plastic zone can obtain the plastic field stress distribution. As shown in Fig.…”

Section: Solving the Cavity Boundary Stress Olving The Stress Functionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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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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“…In this section, based on our previous work (Dai et al 2020;Dai et al 2021), a semi-analytical formula is proposed to calculate the terminal ballistic parameters of the ECDP penetration into semi-infinite plain concrete target.…”

Section: Theoretical Modelmentioning

confidence: 99%

“…In recent years, the terminal ballistic effect of the elliptical cross-section single-ogive-nose projectile (ECSP) penetration into the plain concrete target has been studied. Dai et al (2020Dai et al ( , 2021 proposed the closed-form penetration formula of the ECSP based on the cavity-expansion theory, and discussed the penetration performance of the ECSP. Moreover, the penetration-depth increment of the ECSP was evaluated, and the influence of the major-minor axis ratio on the penetration-depth increment was discussed.…”

Section: Introductionmentioning

confidence: 99%

Analytical and experimental study on elliptical cross-section double-ogive-nose projectile penetration into plain concrete target

Dai,

Wang,

Zhou

et al. 2024

Lat. Am. j. solids struct.

Self Cite

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A general geometric model of the elliptical cross-section double-ogive-nose projectile (ECDP) was established, and the expression of penetration resistance was obtained. Based on the special shape and penetration process characteristics of the ECDP, a three-stage penetration model was constructed, and closed-form penetration equations were derived. Three ECDPs with the major-minor axis ratio of 1.5 were launched by a 130 mm gas-gun to impact the plain concrete targets with the oblique angle of 10° at a nominal striking velocity of 650 m/s, the experimental data such as the penetration depth of the ECDPs and the failure characteristic parameter of the targets was obtained. The initial posture of the ECDP had little effect on the penetration depth and trajectory deflection under the condition of the target with 10° oblique angle, but it had obvious influence on the structural response. The theoretical model was verified by experimental data, the calculated result of the penetration depth was in good agreement with the experimental data, the deviation was within the range of -13.5% ~ -8.5%.

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Research on High-Velocity Perforation Characteristics of Elliptical Cross-Section Truncated Ogive Projectile

Deng,

Dong,

Wang

et al. 2023

Mechanisms and Machine Science

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Rigid elliptical cross-section ogive-nose projectiles penetration into concrete targets

Cited by 10 publications

References 22 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

Analytical and experimental study on elliptical cross-section double-ogive-nose projectile penetration into plain concrete target

Research on High-Velocity Perforation Characteristics of Elliptical Cross-Section Truncated Ogive Projectile

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