Study on penetration characteristics of high-speed elliptical cross-sectional projectiles into concrete

Dong, Heng; Liu, Zihao; Wu, Haijun; Gao, Xudong; Pi, Aiguo; Huang, Fenglei

doi:10.1016/j.ijimpeng.2019.05.025

Cited by 20 publications

(9 citation statements)

References 19 publications

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“…Dong et al [18] studied the radial stress distribution of ECSP with different striking velocities penetrating concrete target by numerical simulation. The results show that the radial stress at the projectile nose increases progressively from the minor axis to the major axis.…”

Section: Radial Stress Distribution Characteristics Of Elliptical Cav...mentioning

confidence: 99%

“…In this section, the accuracy of penetration-depth prediction model in section 3 is verified by experiment data in section 2 and Refs. [17,18]. Table 3 shows the comparison between predictions and the experimental data, and 𝜀𝜀 represents the deviation of predictions from the experiment data.…”

Section: Penetration-depth Predictions For Circular and Elliptical Cr...mentioning

confidence: 99%

“…Wu et al and Liu et al [18][19][20] carried out a series of penetration experiments of ECSPs penetrating into semi-infinite concrete target in the striking velocity range of 700 m/s to 1000 m/s and analyzed the penetration performance of the ECSP and the damage characteristics of the target. They studied the radial stress distribution along the circumferential direction at the cross-section of projectile nose through numerical simulation, introduced the shape factor of the ECSP to modify the cavity expansion theory, analyzed the variation law of the resistance of the projectile nose, and established the model of the normal penetration depth of the ECSP.…”

Section: Introductionmentioning

confidence: 99%

“…Practically, the penetration depth of the ECSP can be solved by converting the cross-sectional area of the ECSP into the area of an equivalent circle for engineering applications [15,16]. However, due to the asymmetry of the ECSP, the radial stress distribution of the projectile nose and the response characteristics of the target are quite different from those of the CCSP [18][19][20]. The radial stress distribution characteristics of the ECSP nose are contributed to the structural optimization design of the projectile, the stability analysis of the charge and the oblique penetration trajectory of ECSPs.…”

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: Radial Stress Distribution Characteristics Of Elliptical Cav...mentioning

confidence: 99%

Section: Penetration-depth Predictions For Circular and Elliptical Cr...mentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

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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“…Owing to the flattening of aircraft shapes, noncircular projectiles are also being developed to adapt to the internal space of aircraft. With the emergence of noncircular cross-section projectiles [1][2][3][4], the model for the fragment velocity of a cylindrical projectile is no longer applicable. Therefore, research on noncircular cross-section projectiles is particularly important.…”

Section: Introductionmentioning

confidence: 99%

Preformed Fragment Velocity Distribution of Elliptical Cross-section Projectile

Deng

Yang

et al. 2022

Lat. Am. j. solids struct.

Self Cite

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In the field of warhead design, non-cylindrical warhead, especially elliptical cross-section warhead, has received considerable attention. In this study, the initial velocity and distribution characteristics of the preformed fragments of a columnar projectile with an elliptical cross-section were examined. To obtain the velocity distribution of the fragments in this kind of projectile, three elliptical cross-section projectiles with different geometric sizes were test based on the static detonation tests. Then, the numerical models of the elliptical cross-section projectile have been established and validated according to the experiment results. Besides, two kinds of initiation types were studied by the simulation model, and the results indicate that not only the geometric size but the initiation type do great influences on the fragment velocity distribution in the direction of the axis. An empirical model was proposed based on the fragment two-step acceleration progress, and it was in good accordance with numerical results.

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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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Study on penetration characteristics of high-speed elliptical cross-sectional projectiles into concrete

Cited by 20 publications

References 19 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

Preformed Fragment Velocity Distribution of Elliptical Cross-section Projectile

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

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