Study of Hypervelocity Projectile Impact on Thick Metal Plates

Roy, Shawoon; Trabia, Mohamed B.; O’Toole, Brendan; Hixson, R. S.; Becker, Simone; Pena, Michael; Jennings, Richard T.; Somasoundaram, Deepak; Matthes, Melissa; Daykin, Edward; Machorro, Eric

doi:10.1155/2016/4313480

Cited by 19 publications

(7 citation statements)

References 46 publications

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“…e parameters of the reactive material are taken from Tables 4-6, and the parameters of the steel plate are taken from Tables 2 and 3. Considering the relatively large deformation of the fragment, we adopt the Smoothed Particle Hydrodynamics (SPH) method [23] for the simulation. e SPH numerical model is shown in Figure 8, where the blue particles stand for the steel plate and the red particles for the spherical fragment.…”

Section: Further Discussionmentioning

confidence: 99%

Modelling on Shock‐Induced Energy Release Behavior of Reactive Materials considering Mechanical‐Thermal‐Chemical Coupled Effect

Guo

Ren

et al. 2021

Shock and Vibration

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Reactive material (RM) is a new type of energetic material, which is widely used in the military technology fields such as fragmentation warheads and shaped charge warheads. Violent chemical reactions take place in the impact process of reactive materials, and how to realize the macro numerical simulation of shock-induced energy release behavior of reactive materials is one of the most urgent problems to be solved for its future military applications. In this study, a numerical simulation approach and procedure is proposed, which can simulate the shock-induced energy release behavior of reactive materials on a macro scale. Firstly, program implementation of the mechanical-thermal-chemical coupled effect model for RM is realized in the second-development interface of LS-DYNA software. Then, the adaptive simulated annealing algorithm is used to fit the chemical reaction kinetic parameters of RM using the direct ballistics test data. Finally, the simulation calculation of the fragment penetrating upon steel plate is carried out to expand the applicability of the numerical simulation approach proposed in this study. The results show that the numerical simulation approach proposed in this study can reproduce the results of the direct ballistics test more accurately, which assumes practical significance for the engineering application of reactive materials in the military field in the future.

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Section: Further Discussionmentioning

confidence: 99%

Modelling on Shock‐Induced Energy Release Behavior of Reactive Materials considering Mechanical‐Thermal‐Chemical Coupled Effect

Guo

Ren

et al. 2021

Shock and Vibration

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“…EOS are used to relate the state variables together when the conservation equations are not enough, which is the case of high strain rate impact, along with all fluid dynamics cases. One of the most commonly used EOS in impact modeling is the Mie-Grüneisen equation, which has also proven effective at predicting the response of porous materials to compressive shock waves [62][63][64][65], and was the EOS used in the Abaqus impact simulations run as part of this research. In order to develop a relationship between pressure and volume there must be a link between statistical mechanics and thermodynamics, which starts with the analysis of the Helmholtz free energy equation, Equation (30) [62].…”

Section: Equation Of Statementioning

confidence: 99%

Modeling and Simulation Techniques Used in High Strain Rate Projectile Impact

2021

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A series of computational models and simulations were conducted for determining the dynamic responses of a solid metal projectile impacting a target under a prescribed high strain rate loading scenario in three-dimensional space. The focus of this study was placed on two different modeling techniques within finite element analysis available in the Abaqus software suite. The first analysis technique relied heavily on more traditional Lagrangian analysis methods utilizing a fixed mesh, while still taking advantage of the finite difference integration present under the explicit analysis approach. A symmetry reduced model using the Lagrangian coordinate system was also developed for comparison in physical and computational performance. The second analysis technique relied on a mixed model that still made use of some Lagrangian modeling, but included smoothed particle hydrodynamics techniques as well, which are mesh free. The inclusion of the smoothed particle hydrodynamics was intended to address some of the known issues in Lagrangian analysis under high displacement and deformation. A comparison of the models was first performed against experimental results as a validation of the models, then the models were compared against each other based on closeness to experimentation and computational performance.

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“…SPH particles "naturally" form discontinuities in the continuum such as cracking, penetration, and fragmentation as particles are forced to separate during the penetration event. The method has been validated by comparison to experimental data for a range of hypervelocity impact problems [11,12]. As a result of the symmetry of the problem, only a quarter of each configuration has been modeled whereas the rest has been represented using corresponding symmetry constraints.…”

Section: Modeled Bumper Configurationsmentioning

confidence: 99%

Fragmentation of Millimeter-Size Hypervelocity Projectiles on Combined Mesh-Plate Bumpers

Cherniaev

Telichev

2017

Advances in Materials Science and Engineering

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This numerical study evaluates the concept of a combined mesh-plate bumper as a shielding system protecting unmanned spacecraft from small (1 mm) orbital debris impacts. Two-component bumpers consisting of an external layer of woven mesh (aluminum or steel) directly applied to a surface of the aluminum plate are considered. Results of numerical modeling with a projectile velocity of 7 km/s indicate that, in comparison to the steel mesh-combined bumper, the combination of aluminum mesh and aluminum plate provides better fragmentation of small hypervelocity projectiles. At the same time, none of the combined mesh/plate bumpers provide a significant increase of ballistic properties as compared to an aluminum plate bumper. This indicates that the positive results reported in the literature for bumpers with metallic meshes and large projectiles are not scalable down to millimeter-sized particles. Based on this investigation's results, a possible modification of the combined mesh/plate bumper is proposed for the future study.

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Study of Hypervelocity Projectile Impact on Thick Metal Plates

Cited by 19 publications

References 46 publications

Modelling on Shock‐Induced Energy Release Behavior of Reactive Materials considering Mechanical‐Thermal‐Chemical Coupled Effect

Modelling on Shock‐Induced Energy Release Behavior of Reactive Materials considering Mechanical‐Thermal‐Chemical Coupled Effect

Modeling and Simulation Techniques Used in High Strain Rate Projectile Impact

Fragmentation of Millimeter-Size Hypervelocity Projectiles on Combined Mesh-Plate Bumpers

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