Theoretical Research Progress in High-Velocity/Hypervelocity Impact on Semi-Infinite Targets

Sun, Yunhou; Chao, Shi; Liu, Zheng; Wen, Desheng

doi:10.1155/2015/265321

Cited by 12 publications

(12 citation statements)

References 57 publications

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“…This necessitates the development of in-situ experimental techniques to not only improve our observed understanding, but also to validate the simulated solutions. The experimental methods or even analytical methods quantify projectile velocity, stress, final penetration depth into the target, and the final target/projectile deformation [76]. Of these, only the stress may be measured with any temporal resolution given normally used methods, and none yield any information about target material behavior during the process beyond general bulk results.…”

Section: Methodsmentioning

confidence: 99%

Advances in Projectile Penetration Mechanism in Soil Media

et al. 2020

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The penetration to geological shield occurs in many situations at various velocities and scales, for example, meteor-cratering, pile driving, falling of objects from high-rise building construction, and debris/fragments from failed components. The soil media is an efficient energy dissipation system and effective shock protection shield. Impact circumstances are currently getting widespread attention. A lot of research has been done on soil media for impact and penetration. The phenomenon of dynamic penetration in heterogeneous particulate soil medium is very complex and the target soil media under dynamic impact especially under high speed and deep penetration neither behave completely as solid nor as liquid. The topics of recent research interest in the field of penetration to soil media and their significant findings are critically reviewed in the present study. The dedicated review of analytical, empirical, experimental, and computational methods to predict the response of soils media-impacting objects to penetration is presented. The emerging challenges in fundamental research of penetration into soil media are outlined and it is an attempt to formulate the future research directions in the field of soil media penetration.

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Section: Methodsmentioning

confidence: 99%

Advances in Projectile Penetration Mechanism in Soil Media

et al. 2020

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“…where f is a non-dimensional function of the nondimensional shape parameters. Let us compare this formula with empirical scaling formulas, which adopt the form: 11,12,[15][16][17]27…”

Section: B Macroscopic Body Penetration: Dimensional Analysismentioning

confidence: 99%

“…As a particular solution of system (13,14,15), we prefer the one with β = 0, to obtain an expression ofD that does not contain v 0 . The corresponding determinant is non-vanishing and we find: α = −2/3, γ = 2/3, δ = −1.…”

Section: A Dimensional Analysismentioning

confidence: 99%

“…7,8 Of course, the various aspects of the impact and penetration of projectiles in resistant media are treated in several modern books and reviews. [9][10][11][12][13][14][15] Newton's theory of resistance focuses on fluids, 1 but it can be applied to the motion of fast projectiles in any media. 6 Projectiles with velocities about 1 km/s are fairly normal, while larger velocities, about 10 km/s, are typical in space and, in fact, constitute a hazard in space engineering.…”

Section: Introductionmentioning

confidence: 99%

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Penetration of fast projectiles into resistant media: From macroscopic to subatomic projectiles

Gaite

2017

Annals of Physics

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The penetration of a fast projectile into a resistant medium is a complex process that is suitable for simple modeling, in which basic physical principles can be profitably employed. This study connects two different domains: the fast motion of macroscopic bodies in resistant media and the interaction of charged subatomic particles with matter at high energies, which furnish the two limit cases of the problem of penetrating projectiles of different sizes. These limit cases actually have overlapping applications; for example, in space physics and technology. The intermediate or mesoscopic domain finds application in atom cluster implantation technology. Here it is shown that the penetration of fast nano-projectiles is ruled by a slightly modified Newton's inertial quadratic force, namely, F ∼ v 2−β , where β vanishes as the inverse of projectile diameter. Factors essential to penetration depth are ratio of projectile to medium density and projectile shape.

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“…The physical processes happening in the rods are separate from those occurring in the target, but they are constrained by the requirement that stress needs to be continuous across the projectile-target boundary and that displacement needs to be compatible at the boundary. For rigid projectile penetration, satisfying results can be obtained with Cavity Expansion Theory (CET) and internal friction theory [5]. However, in recent years, CET has been more extensively studied than the friction theory [6,[24][25][26], and new analytical models have been created around this CET approach.…”

mentioning

confidence: 99%

Spherical Cavity Expansion Approach for the Study of Rigid-Penetrator’s Impact Problems

Buchely

Maranon

2020

Applied Mechanics

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In recent years, Spherical Cavity Expansion (SCE) theory has been extensively utilized to model dynamic deformation processes related to indentation and penetration problems in many fields. In this review, the SCE theory is introduced by explaining the different mathematical features of this theory, its solution, and a potential application to model the penetration of a rigid penetrator into a deformable target. First, a chronologically literature review of the most common models used to study this kind of penetration problems is introduced, focusing on the SCE theory. Then, the engineering model of penetration is presented using the SCE approach. The model is then compared and validated with some FE numerical simulations and with previous penetration results. It is concluded that this engineering model based on the SCE theory can be utilized to predict the projectile deceleration and penetration depth into the semi-infinite and finite targets impacted by rigid penetrators.

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Theoretical Research Progress in High-Velocity/Hypervelocity Impact on Semi-Infinite Targets

Cited by 12 publications

References 57 publications

Advances in Projectile Penetration Mechanism in Soil Media

Advances in Projectile Penetration Mechanism in Soil Media

Penetration of fast projectiles into resistant media: From macroscopic to subatomic projectiles

Spherical Cavity Expansion Approach for the Study of Rigid-Penetrator’s Impact Problems

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