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Journal articles on the topic 'Ballistic capture'

Author: Grafiati

Published: 22 February 2023

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1

Luo, Zong-Fu. "The role of the mass ratio in ballistic capture." Monthly Notices of the Royal Astronomical Society 498, no. 1 (2020): 1515–29. http://dx.doi.org/10.1093/mnras/staa2366.

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ABSTRACT A massless particle can be naturally captured by a celestial body with the aid of a third body. In this work, the influence of the mass ratio on ballistic capture is investigated in the planar circular restricted three-body problem (CR3BP) model. Four typical dynamical environments with decreasing mass ratios, that is, the Pluto–Charon, Earth–Moon, Sun–Jupiter, and Saturn–Titan systems, are considered. A generalized method is introduced to derive ballistic capture orbits by starting from a set of initial conditions and integrating backward in time. Particular attention is paid to the

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2

Topputo, F., and E. Belbruno. "Earth–Mars transfers with ballistic capture." Celestial Mechanics and Dynamical Astronomy 121, no. 4 (2015): 329–46. http://dx.doi.org/10.1007/s10569-015-9605-8.

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3

Luo, Z. F., and F. Topputo. "Capability of satellite-aided ballistic capture." Communications in Nonlinear Science and Numerical Simulation 48 (July 2017): 211–23. http://dx.doi.org/10.1016/j.cnsns.2016.12.021.

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4

Griesemer, Paul Ricord, Cesar Ocampo, and D. S. Cooley. "Targeting Ballistic Lunar Capture Trajectories Using Periodic Orbits." Journal of Guidance, Control, and Dynamics 34, no. 3 (2011): 893–902. http://dx.doi.org/10.2514/1.46843.

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5

Hyeraci, Nicola, and Francesco Topputo. "The role of true anomaly in ballistic capture." Celestial Mechanics and Dynamical Astronomy 116, no. 2 (2013): 175–93. http://dx.doi.org/10.1007/s10569-013-9481-z.

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6

Luo, Z. F., and F. Topputo. "Analysis of ballistic capture in Sun–planet models." Advances in Space Research 56, no. 6 (2015): 1030–41. http://dx.doi.org/10.1016/j.asr.2015.05.042.

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7

Belbruno, Edward A., and James K. Miller. "Sun-perturbed Earth-to-moon transfers with ballistic capture." Journal of Guidance, Control, and Dynamics 16, no. 4 (1993): 770–75. http://dx.doi.org/10.2514/3.21079.

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8

Ran, Ling Sheng, Song Hua He, and Da Wei Lu. "The Measure of Missile’s Capture Performance Based on the Geometric Counts under HPM Damage." Applied Mechanics and Materials 724 (January 2015): 297–302. http://dx.doi.org/10.4028/www.scientific.net/amm.724.297.

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In order to measure capture performance of the seeker in the typical terminal guidance scene under HPM damage effect, the paper proposes a new method to model the dynamic capture state in different ballistic position. The proposed missile-target geometry count can be used to process multiple data generated in multiple Monte Carlo simulations under the same scene, which facilitates capture performance comparative analysis between different scenes. Simulations validate proposed counting measure, so that it can be applied for measuring the performance of missile capture.

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BELBRUNO, EDWARD. "Existence of Chaos Associated with Weak Ballistic Capture and Applications." Annals of the New York Academy of Sciences 1017, no. 1 (2004): 1–10. http://dx.doi.org/10.1196/annals.1311.001.

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10

Sorbier, J. P., and A. Chambarel. "Bi-dimensional ballistic model of a trap capture cross-section." Journal of Non-Crystalline Solids 322, no. 1-3 (2003): 11–16. http://dx.doi.org/10.1016/s0022-3093(03)00164-9.

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11

Mingotti, G., F. Topputo, and F. Bernelli-Zazzera. "Earth–Mars transfers with ballistic escape and low-thrust capture." Celestial Mechanics and Dynamical Astronomy 110, no. 2 (2011): 169–88. http://dx.doi.org/10.1007/s10569-011-9343-5.

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12

Luo, Z. F., F. Topputo, F. Bernelli-Zazzera, and G. J. Tang. "Constructing ballistic capture orbits in the real Solar System model." Celestial Mechanics and Dynamical Astronomy 120, no. 4 (2014): 433–50. http://dx.doi.org/10.1007/s10569-014-9580-5.

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13

Quenta Herrera, Estefania, Jérôme Casas, Olivier Dangles, and Sylvain Pincebourde. "Temperature effects on ballistic prey capture by a dragonfly larva." Ecology and Evolution 8, no. 8 (2018): 4303–11. http://dx.doi.org/10.1002/ece3.3975.

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14

Xie, Wei Shi, Zhi Hua Xiao, and Jian Tang. "The Design Research of Millimeter-Wave Homing Empty - Empty Ammunition Ballistics." Applied Mechanics and Materials 575 (June 2014): 337–42. http://dx.doi.org/10.4028/www.scientific.net/amm.575.337.

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The millimeter-wave terminal guidance ammunition monitoring scanning field is small. The modified design is in order to improve the search section trajectory guidance. This study established seeker search area to capture the target model, which leads to the missile engine unpowered glide distance formula after flameout. At the millimeter-wave terminal on the missiles contraction section ballistic. Each missile is designed for the flat road, the swash decline ballistic programs. Flat missile road program scans and does not shrink. Its flight speed falls and declines rapidly, has different glidi

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15

JOHNSON, M. D. "Reduction of Lunar Landing Fuel Requirements by Utilizing Lunar Ballistic Capture." Annals of the New York Academy of Sciences 1065, no. 1 (2005): 139–51. http://dx.doi.org/10.1196/annals.1370.022.

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16

Circi, Christian, and Paolo Teofilatto. "Effect of Planetary Eccentricity on Ballistic Capture in the Solar System." Celestial Mechanics and Dynamical Astronomy 93, no. 1-4 (2005): 69–86. http://dx.doi.org/10.1007/s10569-005-3640-9.

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17

Zhu, Qinxin, and Jesse Maassen. "Electron transport with the McKelvey–Shockley flux method: The effect of electric field and electron–phonon scattering." Journal of Applied Physics 132, no. 7 (2022): 075109. http://dx.doi.org/10.1063/5.0102588.

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The McKelvey–Shockley (McK–S) flux method is a semi-classical transport theory that captures ballistic and non-equilibrium effects and can treat carrier flow from the nano-scale to the macro-scale. This work introduces a revised formulation of the McK–S flux equations for electron transport, in order to resolve the energy dependence of the fluxes, capture the effect of electric field, and include acoustic/optical phonon scattering. This updated McK–S formalism is validated by simulating electron transport across a finite-length semiconductor under the influence of a constant electric field und

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18

de Carpentier, Giliam J. P. "Analytical Ballistic Trajectories with Approximately Linear Drag." International Journal of Computer Games Technology 2014 (2014): 1–13. http://dx.doi.org/10.1155/2014/463489.

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This paper introduces a practical analytical approximation of projectile trajectories in 2D and 3D roughly based on a linear drag model and explores a variety of different planning algorithms for these trajectories. Although the trajectories are only approximate, they still capture many of the characteristics of a real projectile in free fall under the influence of an invariant wind, gravitational pull, and terminal velocity, while the required math for these trajectories and planners is still simple enough to efficiently run on almost all modern hardware devices. Together, these properties ma

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Sandulyak, A. V., A. A. Sandulyak, V. A. Ershov, B. N. Nyunin, and M. N. Pugacheva. "The method of experimental study of magnetic separator working area with obtaining of direct capture power data." Izvestiya MGTU MAMI 1, no. 2 (2007): 217–21. http://dx.doi.org/10.17816/2074-0530-69740.

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The paper presents various methods (including non-proven ballistic method) for power characterization of the working zone of cleaning unit. The authors developed and implemented a new method based on forced drift of ferroparticles along the remotely positioned line through this area (with subsequent calculation of the normal component of the capture power).

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Dei Tos, Diogene A., Ryan P. Russell, and Francesco Topputo. "Survey of Mars Ballistic Capture Trajectories Using Periodic Orbits as Generating Mechanisms." Journal of Guidance, Control, and Dynamics 41, no. 6 (2018): 1227–42. http://dx.doi.org/10.2514/1.g003158.

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21

Hyeraci, Nicola, and Francesco Topputo. "Method to Design Ballistic Capture in the Elliptic Restricted Three-Body Problem." Journal of Guidance, Control, and Dynamics 33, no. 6 (2010): 1814–23. http://dx.doi.org/10.2514/1.49263.

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22

de Almeida Prado, Antonio Fernando Bertachini. "Numerical Study and Analytic Estimation of Forces Acting in Ballistic Gravitational Capture." Journal of Guidance, Control, and Dynamics 25, no. 2 (2002): 368–75. http://dx.doi.org/10.2514/2.4891.

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23

Luo, Z. F., F. Topputo, F. Bernelli-Zazzera, and G. J. Tang. "Erratum to: Constructing ballistic capture orbits in the real Solar System model." Celestial Mechanics and Dynamical Astronomy 120, no. 4 (2014): 451–52. http://dx.doi.org/10.1007/s10569-014-9595-y.

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24

Wu, Chunbo, Shuai Yue, Wenhui Shi, Mengsheng Li, Zhonghua Du, and Zhi Liu. "Dynamic Simulation and Parameter Analysis of Harpoon Capturing Space Debris." Materials 15, no. 24 (2022): 8859. http://dx.doi.org/10.3390/ma15248859.

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This paper aims to study the penetration effect of harpoons on space debris to ensure the sustainable development of the space environment and solve the increasingly serious space debris problem. Firstly, a harpoon system was designed to capture space debris. Secondly, based on the Johnson–Cook dynamic constitutive model and fracture failure criterion, the finite element models of aluminum alloy plates were established. Then, the ballistic limit theory for the aluminum alloy target predicted the minimum launch velocity of the harpoon. Finally, the validation experiment was set up to verify the

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25

Lappin, A. K. "Storage and recovery of elastic potential energy powers ballistic prey capture in toads." Journal of Experimental Biology 209, no. 13 (2006): 2535–53. http://dx.doi.org/10.1242/jeb.02276.

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26

Mencaraglia, D., and J. P. Kleider. "Transition from diffusive to ballistic capture related to hydrogen incorporation in amorphous silicon." Philosophical Magazine Letters 55, no. 2 (1987): 63–68. http://dx.doi.org/10.1080/09500838708201596.

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27

Costa, Ulisses Oliveira, Lucio Fabio Cassiano Nascimento, Wendell Bruno Almeida Bezerra, et al. "Dynamic and Ballistic Performance of Graphene Oxide Functionalized Curaua Fiber-Reinforced Epoxy Nanocomposites." Polymers 14, no. 9 (2022): 1859. http://dx.doi.org/10.3390/polym14091859.

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Graphene oxide (GO) functionalized curaua fiber (CF) has been shown to improve the mechanical properties and ballistic performance of epoxy matrix (EM) nanocomposites with 30 vol% fiber. However, the possibility of further improvement in the property and performance of nanocomposites with a greater percentage of GO functionalized CF is still a challenging endeavor. In the present work, a novel epoxy composite reinforced with 40 vol% CF coated with 0.1 wt% GO (40GOCF/EM), was subjected to Izod and ballistic impact tests as well as corresponding fractographic analysis in comparison with a GO-fre

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28

Qian, Xiuyang, Yushan Zhou, Liya Cai, Feng Pei, and Xu Li. "Computational simulation of the ballistic impact of fabrics using hybrid shell element." Journal of Engineered Fibers and Fabrics 15 (January 2020): 155892502097354. http://dx.doi.org/10.1177/1558925020973542.

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This paper investigates on a computational simulation of Twaron® fabric against ballistic impact. It proposed a hybrid shell element model considering the strain-rate-sensitive failure criterion. This model innovatively provided a resolution of the yarn level to better capture the unique properties of the woven fabric, such as yarn crimp, sliding contact between yarns, stress transmission on yarns and yarn broken. The fabric is modeled using a hybrid shell element analysis approach aim of reducing the complexity and computational expense while ensuring accuracy. The response characteristics of

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29

Da Silva, Roberto, Luis C. Lamb, and Gilson Inacio Wirth. "Collective Poisson process with periodic rates: applications in physics from micro-to nanodevices." Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences 369, no. 1935 (2011): 307–21. http://dx.doi.org/10.1098/rsta.2010.0258.

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Continuous reductions in the dimensions of semiconductor devices have led to an increasing number of noise sources, including random telegraph signals (RTS) due to the capture and emission of electrons by traps at random positions between oxide and semiconductor. The models traditionally used for microscopic devices become of limited validity in nano- and mesoscale systems since, in such systems, distributed quantities such as electron and trap densities, and concepts like electron mobility, become inadequate to model electrical behaviour. In addition, current experimental works have shown tha

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30

Li, Xing Long, Xiao Ming Wang, Wen Jin Yao, and Ji Yan Yu. "Optimization of Launching Angle Base on the Acquisition Probability for Laser Semi-Active Terminal Correction Projectile." Advanced Materials Research 760-762 (September 2013): 209–12. http://dx.doi.org/10.4028/www.scientific.net/amr.760-762.209.

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In order to improve the acquisition probability for laser semi-active terminal correction projectile, the scheme of optimizing launch angle is proposed, the mathematical model of the strapdown seeker laser detector and the capture field model of target is established, and the scheme is verified by Monte Carlo ballistic simulation method. The results show that the scheme of optimizing launch angle improves the target acquisition probability, and will be of important significance to firing table modifying of laser semi-active terminal correction projectile.

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31

Li, Peng, Chi-Yao Chang, and Amsini Sadiki. "Numerical Investigation of Pyrotechnical Initiators and Their Impact in Airbag Inflator Applications: Ballistic Modeling and Functional Analysis." Journal of Energy and Power Technology 03, no. 02 (2021): 1. http://dx.doi.org/10.21926/jept.2102026.

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A numerical model describing the ballistic behavior of a commercially used initiator is presented in this article. This model was built on the principle of conservation of mass and energy in the multi-phase framework incorporated with multi-loaded conditions. After obtaining the information about the grain size distribution in each composite, a fixing factor was proposed based on the surface area ratio of the composites. Thus, the solid propellant burning process based on distributed grain size was described, and the burn rate parameters of the applied pyrotechnic compositions were re-evaluate

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32

Costa, Ulisses Oliveira, Lucio Fabio Cassiano Nascimento, Julianna Magalhães Garcia, et al. "Effect of Graphene Oxide Coating on Natural Fiber Composite for Multilayered Ballistic Armor." Polymers 11, no. 8 (2019): 1356. http://dx.doi.org/10.3390/polym11081356.

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Composites with sustainable natural fibers are currently experiencing remarkably diversified applications, including in engineering industries, owing to their lower cost and density as well as ease in processing. Among the natural fibers, the fiber extracted from the leaves of the Amazonian curaua plant (Ananas erectifolius) is a promising strong candidate to replace synthetic fibers, such as aramid (Kevlar™), in multilayered armor system (MAS) intended for ballistic protection against level III high velocity ammunition. Another remarkable material, the graphene oxide is attracting considerabl

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Lim, Boon, Jou-Mei Chu, Benjamin Claus, Yizhou Nie, and Wayne Chen. "Critical Velocity of High-Performance Yarn Transversely Impacted by Razor Blade." Fibers 6, no. 4 (2018): 95. http://dx.doi.org/10.3390/fib6040095.

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A ballistic parameter that influences the ballistic performances of a high-performance yarn is the critical velocity. The critical velocity is defined as the projectile striking velocity that causes instantaneous rupture of the yarn upon impact. In this study, we performed ballistic experiments to determine the critical velocity of a Twaron® yarn transversely impacted by a razor blade. A high-speed camera was integrated into the experimental apparatus to capture the in-situ deformation of the yarn. The experimental critical velocity demonstrated a reduction compared to the critical velocity pr

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Hwang, Do Yeon, Akira Shimamoto, Daiju Numata, Takamase Kikuchi, and Kazuyoshi Takayama. "Experimental Study of High-Velocity Impact Characteristic of Mg Alloy Using Ballistic Range." Key Engineering Materials 321-323 (October 2006): 654–57. http://dx.doi.org/10.4028/www.scientific.net/kem.321-323.654.

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In this study, dynamic penetration phenomena of high-velocity impact of magnesium alloy were investigated. The surface hardness of magnesium alloy (AZ31B-O) and the heat-treated magnesium alloy (AZ31B-200°C, AZ31B-300°C, and AZ31B-430°C) were examined using Micro Vickers, and the influence of the heat treatment temperature was observed. We analyzed the metal organization using a microscope. We also used a ballistic range (two-stage light gas gun), and the test specimens were set at 0°obliquity at room temperature. A high-speed camera allowed us to capture and analyzed the dynamic penetration p

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Abtew, Mulat Alubel, Francois Boussu, Pascal Bruniaux, and Yan Hong. "Dynamic Impact Surface Damage Analysis of 3D Woven Para-Aramid Armour Panels Using NDI Technique." Polymers 13, no. 6 (2021): 877. http://dx.doi.org/10.3390/polym13060877.

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The effects of the yarn composition system inside 3D woven high-performance textiles are not well investigated and understood against their final ballistic impact behaviour. The current study aims to examine the ballistic impact performances of armour panels made of different 3D woven fabric variants through postmortem observations. Four high-performance five-layer 3D woven fabric variants were engineered based on their different warp yarn compositions but similar area density. A 50 × 50 cm2 armour system of each variant, which comprises eight nonbonded but aligned panels, namely, 3D-40-8/0 (o

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Helms, Stephen J., W. Mathijs Rozemuller, Antonio Carlos Costa, Leon Avery, Greg J. Stephens, and Thomas S. Shimizu. "Modelling the ballistic-to-diffusive transition in nematode motility reveals variation in exploratory behaviour across species." Journal of The Royal Society Interface 16, no. 157 (2019): 20190174. http://dx.doi.org/10.1098/rsif.2019.0174.

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A quantitative understanding of organism-level behaviour requires predictive models that can capture the richness of behavioural phenotypes, yet are simple enough to connect with underlying mechanistic processes. Here, we investigate the motile behaviour of nematodes at the level of their translational motion on surfaces driven by undulatory propulsion. We broadly sample the nematode behavioural repertoire by measuring motile trajectories of the canonical laboratory strain Caenorhabditis elegans N2 as well as wild strains and distant species. We focus on trajectory dynamics over time scales sp

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ZHAO, Yameng, and Jian JIANG. "Algorithm Design of Mirror Tracking System." Journal of Physics: Conference Series 2290, no. 1 (2022): 012101. http://dx.doi.org/10.1088/1742-6596/2290/1/012101.

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Abstract In the current national defense background, the requirements for the performance of weapons are increasing day by day, the speed of the flying target and the flight state provide important parameters for the improvement of the characteristics of weapons, ballistics and ammunition. In the shooting range test, the high-speed flying target is tracked and photographed to obtain important indicators such as the flight status of the flying target in high-speed flight. This paper studies a ballistic tracking camera system based on a rotating mirror. It is composed of a system, which can trac

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Skotak, Maciej, Jonathan Salib, Anthony Misistia, et al. "Factors Contributing to Increased Blast Overpressure Inside Modern Ballistic Helmets." Applied Sciences 10, no. 20 (2020): 7193. http://dx.doi.org/10.3390/app10207193.

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This study demonstrates the orientation and the "shape factor" have pronounced effects on the development of the localized pressure fields inside of the helmet. We used anatomically accurate headform to evaluate four modern combat helmets under blast loading conditions in the shock tube. The Advanced Combat Helmet (ACH) is used to capture the effect of the orientation on pressure under the helmet. The three modern combat helmets: Enhanced Combat Helmet (ECH), Ops-Core, and Airframe, were tested in frontal orientation to determine the effect of helmet geometry. Using the unhelmeted headform dat

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39

Taylor, E. A., M. K. Herbert, D. J. Gardner, L. Kay, R. Thomson, and M. J. Burchell. "Hypervelocity impact on spacecraft carbon fibre reinforced plastic/aluminium honeycomb." Proceedings of the Institution of Mechanical Engineers, Part G: Journal of Aerospace Engineering 211, no. 5 (1997): 355–63. http://dx.doi.org/10.1243/0954410971532721.

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Samples of a spacecraft primary external wall structure, as used in a low earth orbit remote sensing platform, have been tested to determine the response to the hypervelocity impact and ballistic limit (for mm-sized impactors) of the 47 mm thick structure at 5 km/s. A strong dependence of the ballistic limit on projectile density was identified. This programme was carried out using the two-stage light gas gun at the University of Kent at Canterbury. The equivalent diameters of the front and rear holes for each impact were analysed as a function of the impactor parameters. Damage equations deri

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PRADO, A. "A study of the effects of the forces in the ballistic capture by the major primary." Advances in Space Research 40, no. 1 (2007): 96–101. http://dx.doi.org/10.1016/j.asr.2007.03.037.

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Lim, Boon, Jou-Mei Chu, Jinling Gao, Benjamin Claus, Yizhou Nie, and Wayne Chen. "The Effect of Projectile Nose Shape on the Critical Velocity of High-Performance Yarn." Fibers 7, no. 4 (2019): 29. http://dx.doi.org/10.3390/fib7040029.

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In this study, ballistic experiments were performed to determine the critical velocity of a Twaron® 2040 high-performance yarn transversely impacted by round projectiles. Four different round projectiles possessing a radius of curvature of 2 µm, 20 µm, 200 µm and 2 mm were used in this study. Load cells were mounted to the grips to measure the load history of the yarn upon impact. A high-speed camera was incorporated into the ballistic experimental setup to capture the failure process of the yarn upon impact. A scanning electron microscope was utilized to perform post-mortem failure analysis o

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Giannopoulos, Ioannis K., Mehdi Yasaee, and Nikolaos Maropakis. "Ballistic Impact and Virtual Testing of Woven FRP Laminates." Journal of Composites Science 5, no. 5 (2021): 115. http://dx.doi.org/10.3390/jcs5050115.

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The aim of the work was to investigate the numerical simulations correlation with the experimental behaviour of steel ball high velocity impact onto a 2 × 2 twill woven carbon composite laminate. The experimental set up consisted of a pressurised gas-gun able to shot steel ball projectiles onto two different composite plate layup configurations of plates made of the same composite material fabric. Subsequently, the experiments were replicated using the LSDYNA explicit finite element analysis software package. Progressive failure numerical models of two different fidelity levels were constructe

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Hunziker, Patrick. "Minimising exposure to respiratory droplets, ‘jet riders’ and aerosols in air-conditioned hospital rooms by a ‘Shield-and-Sink’ strategy." BMJ Open 11, no. 10 (2021): e047772. http://dx.doi.org/10.1136/bmjopen-2020-047772.

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ObjectivesIn COVID-19, transfer of respiratory materials transmits disease and drives the pandemic but the interplay of droplet and aerosol physics, physiology and environment is not fully understood. To advance understanding of disease transmission mechanisms and to find novel exposure minimisation strategies, we studied cough-driven material transport modes and the efficacy of control strategies.DesignComputer simulations and real-world experiments were used for integrating an intensive care setting, multiphysics and physiology. Patient-focused airflow management and air purification strateg

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Hwang, Do Yeon, Akira Shimamoto, and Kazuyoshi Takayama. "High-Velocity Impact Characteristic of Mg Alloy and CFRP Composite." Key Engineering Materials 334-335 (March 2007): 185–88. http://dx.doi.org/10.4028/www.scientific.net/kem.334-335.185.

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This study examined the dynamic penetration phenomena of high-velocity impact of magnesium alloy CFRP (Carbon Fiber Reinforced Plastic) composite. Test materials for investigation are magnesium alloy(AZ31B), the heat-treated magnesium alloy (AZ31B-200°C, AZ31B-300°C, AZ31B-430°C), and carbon/epoxy laminated composite materials with fiber direction [0°]8, [0°/45°]4s, [ 0°/90°]4s, [ 0°/45°/90°]3s and [ 0°/45°/-45°/90°]2s. We used a ballistic range (one-stage light gas gun), and the test specimens were set at 0°obliquity at room temperature. A high-speed camera allowed us to capture and analyzed

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Hwang, Do Yeon, Akira Shimamoto, and Kazuyoshi Takayama. "High-Velocity Impact Characteristic of Carbon Fiber Reinforced Plastic Laminates Using Ballistic Range." Key Engineering Materials 324-325 (November 2006): 1071–74. http://dx.doi.org/10.4028/www.scientific.net/kem.324-325.1071.

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Recently, high-performance hybrid composites have been used for various applications which require the high strength, high stiffness and low weight. There are growing needs in an automotive, an aircraft, and military applications for composite materials since they have good structural characteristics. They also have good penetration resistance and structural integrity after impact. In order to clarify the mechanism of high-speed destruction for composite materials, this study examined the penetration resistance and the fracture behavior of CFRP (Carbon Fiber Reinforced Plastic) Laminates by us

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Anderson, P. S. L., J. LaCosse, and M. Pankow. "Point of impact: the effect of size and speed on puncture mechanics." Interface Focus 6, no. 3 (2016): 20150111. http://dx.doi.org/10.1098/rsfs.2015.0111.

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The use of high-speed puncture mechanics for prey capture has been documented across a wide range of organisms, including vertebrates, arthropods, molluscs and cnidarians. These examples span four phyla and seven orders of magnitude difference in size. The commonality of these puncture systems offers an opportunity to explore how organisms at different scales and with different materials, morphologies and kinematics perform the same basic function. However, there is currently no framework for combining kinematic performance with cutting mechanics in biological puncture systems. Our aim here is

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Xu, H., and H. M. Wen. "A Spherical Cavity Expansion Penetration Model for Concrete Based on Hoek–Brown Strength Criterion." International Journal of Nonlinear Sciences and Numerical Simulation 13, no. 2 (2012): 145–52. http://dx.doi.org/10.1515/ijnsns.2011.099.

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Abstract A spherical cavity expansion model for concrete is first proposed by using an elastic-brittle-plastic material law with Hoek–Brown strength criterion. The constitutive model can capture the basic features of the mechanical response of concrete materials including the effects of strain-softening and pressure hardening (pressure-dependent shear strength) and all the parameters used in the model can be determined from material tests. The forcing function obtained from the spherical cavity expansion analysis is then employed to construct a penetration model for concrete targets struck by

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Herrel, Anthony, Jay J. Meyers, Peter Aerts, and Kiisa C. Nishikawa. "Functional implications of supercontracting muscle in the chameleon tongue retractors." Journal of Experimental Biology 204, no. 21 (2001): 3621–27. http://dx.doi.org/10.1242/jeb.204.21.3621.

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SUMMARYChameleons capture prey items using a ballistic tongue projection mechanism that is unique among lizards. During prey capture, the tongue can be projected up to two full body lengths and may extend up to 600 % of its resting length. Being ambush predators, chameleons eat infrequently and take relatively large prey. The extreme tongue elongation (sixfold) and the need to be able to retract fairly heavy prey at any given distance from the mouth are likely to place constraints on the tongue retractor muscles. The data examined here show that in vivo retractor force production is almost con

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Grujicic, Mica, Ramin Yavari, Jennifer Snipes, and S. Ramaswami. "Mitigation of blast and impact loading via the use of a zeolite-absorbent/nano-fluidics protection system." International Journal of Structural Integrity 6, no. 3 (2015): 367–89. http://dx.doi.org/10.1108/ijsi-09-2014-0041.

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Purpose – In the present work, a new blast-/ballistic-impact mitigation concept is introduced and its efficacy analyzed using advanced computational methods and tools. The concept involves the use of a zeolite protective layer separated by air from the structure being protected and in contact with a water layer in front. The paper aims to discuss these issues. Design/methodology/approach – To properly capture the attendant nano-fluidics phenomena, all the calculations carried out in the present work involved the use of all-atom molecular-level equilibrium and non-equilibrium molecular-dynamics

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Mastilović, Sreten. "MOLECULAR DYNAMICS OBSERVATION OF DISCRETENESS OF THE MASS DISTRIBUTION DURING NANOSCALE FRAGMENTATION." Journal of the Serbian Society for Computational Mechanics 15, no. 2 (2021): 10–22. http://dx.doi.org/10.24874/jsscm.2021.15.02.02.

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Molecular dynamics simulations of the rigid-anvil collision test are performed by using a two-dimensional computational setup that mimics the traditional ballistic Taylor test. In this extensively utilized computational setup, the slender nanoscale projectiles collide with a rigid wall with hypersonic striking velocities ranging from 3 km/s to 30 km/s. The projectiles used in these simulations are flat-ended, monocrystalline, nanoscale bars prepared at zero temperature. The Poisson hyper-exponential distribution with the logarithmic binning is used to capture the fragment mass (size) distribut

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