3.1 Projectile Deformation,Fragmentation,and Melting in the Water ColumnAnalysis and simulation of hypervelocity gouging impacts
CTH,fortunately,has a significant embedded tabular EOS database,based on experimental hypervelocity impacts,for both 1080 steel and VascoMax 300.In a typical simulation of either the scaled hypervelocity gouge test,or the HHSTT sled simulation,there are regions of the impact experiencing strain-rates from 1/s to 10 6 /s.
The Holloman High Speed Test Track (HHSTT) is a U.S.Air Force Simulations of the hypervelocity gouging process have test facility which conducts hypervelocity impact testing.The previously been conducted  using the hydrocode CTH [7,8].Author Hong Chen,Xiang Xu,Jie Huang,Yi Li,Zhixuan Zhou,Sen LiuPublish Year 2009Simulating plasma production from hypervelocity impacts Sep 10,2015·Multi-physics simulations of plasma production from hypervelocity impacts are presented.These simulations incorporate elasticity and plasticity of the solid target,phase change and plasma formation,and non-ideal plasma physics due to the high density and low temperature of the plasma.Author R.Verker,E.Grossman,N.Eliaz,I.Gouzman,S.Eliezer,M.Fraenkel,S.MamanPublish Year 2006Hydrocode simulations of a hypervelocity impact experiment Parametric computational studies involving material properties,geometry and impact velocity can be used to understand hypervelocity impact processes.These impact simulations normally need to address shock wave physics phenomena,material deformation and failure,and motion of debris particles.
Author T.Â.P.Remington,J.Â.M.Owen,A.Â.M.Nakamura,P.Â.L.Miller,M.Bruck SyalPublish Year 2020(PDF) Simulations of Hypervelocity Impacts into Graphite
This paper presents numerical simulations of hypervelocity impacts of 0.5-mm steel spheres into graphite,for velocities ranging between 1100 and 4500 m/s.Author T.Â.P.Remington,J.Â.M.Owen,A.Â.M.Nakamura,P.Â.L.Miller,M.Bruck SyalPublish Year 2020NUMERICAL SIMULATION OF HYPERVELOCITY IMPACTShypervelocity impact,numerical simulation of aluminum projectile impacting on aluminum mesh has been carried out.Two kinds of cross wired aluminum mesh are considered,which are different in wire diameter and mesh size,and the simulated impact velocities range from 3km/s toAuthor T.Heberling,J.M.Ferguson,G.R.Gisler,C.S.Plesko,R.WeaverPublish Year 2016Numerical Simulations of Laboratory-Scale,Hypervelocity Apr 01,2020·Related simulations must be vetted through code validation by benchmarking against relevant laboratory-scale,hypervelocity-impact experiments.To this end,we compare simulation results from Spheral,an adaptive smoothed particle hydrodynamics code,to the fragment-mass and velocity data from the 1991 two-stage light gas-gun impact experiment
Cited by 13Publish Year 1989Author Kathleen S.Holian,Brad Lee HolianNumerical Simulations of LaboratoryScale,Hypervelocity
In a collaboration between Lawrence Livermore National Laboratory and Kobe University,we compare simulations quantitatively with laboratory experiments,examining the fragmentation of rocky bodies due to hypervelocity impacts.The results are characterized by the fragment distribution in mass and velocity.Cited by 1Publish Year 2016Author Aimin Yang,Jinze Li,Hengheng Qu,Yuhang Pan,Yanhong Kang,Yuzhu ZhangHypervelocity impacts into porous graphite experiments We present experiments and numerical simulations of hypervelocity impacts of 0.5 mm steel spheres into graphite,for velocities ranging between 1100 and 4500 m s-1Experiments have evidenced that,after a particular striking velocity,depth of penetration no longer increases but decreases.Moreover,the projectile is observed to be trapped below the crater surface.Cited by 24Publish Year 2015Author Alex Fletcher,Sigrid Close,Donovan MathiasNumerical Simulation of Hypervelocity Impact FEM-SPH the hypervelocity impact problems of numerical simulation of,not only extent,overcomes the defects of smooth particle tensile instability,but also overcomes the problem of low efciency of nite element computation.Finally,the application of the coupling algorithm in the simulation of uid structure interaction is also discussed.
Cited by 2Publish Year 2019Author Sidney Chocron,James D.Walker,Donald J.Grosch,Stephen R.Beissel,Daniel D.Durda,Kevin R.HouAnalysis and Simulation of Hypervelocity Gouging Impacts
In this work,a summary of past and present research efforts,as well as the theoretical foundation,of hypervelocity gouging is presented.As the Holloman AFB High Speed Test Track (HHSTT) sled's speed has increased to Mach 8.5,material interactions develops which causes gouging - this can result in catastrophic failure.A characterization of gouging,including a thermodynamic history,is Cited by 3Publish Year 2017Author Erkai Watson,Martin O SteinhauserScaling of melt production in hypervelocity impacts from Note Scaling of melt production in hypervelocity impacts from high-resolution numerical simulations Amy C.Barra,c,,Robert I.Citronb,c a Department of Space Studies,Southwest Research Institute,1050 Walnut St.,Suite 300,Boulder,CO 80302,United States bLaboratory for Atmospheric and Space Physics,Campus Box 392,University of Colorado,Boulder,CO 80309,United StatesCited by 4Publish Year 2015Author D.Hébert,G.Seisson,I.Bertron,L.Hallo,J.-M.Chevalier,C.Thessieux,F.Guillet,M.Boustie,Hydrodynamic simulations of hypervelocity impacts Jan 01,1989·Also,the walls near the Hydrodynamic simulations of hypervelocity impacts 131 hole in the plate are much thicker.These effects arise primarily because the Tillotsen isentrope at a given pressure has a significantly lower density than that of the SESAME 3201 isentrope (see Fig.6).5.6.
Cited by 5Publish Year 2017Author David Hébert,Gabriel Seisson,Jean-Luc Rullier,Isabelle Bertron,Ludovic Hallo,Jean Marc Chevalie Study of hypervelocity projectile impact on thick
Hypervelocity impacts generate extreme pressure and shock waves in impacted targets that undergo severe localized deformation within a few microseconds.These impact experiments pose unique challenges in terms of obtaining accurate measurements.Similarly,simulating these experiments is not straightforward.This study proposed an approach to experimentally measure the velocity of the back Cited by 8Publish Year 2006Author John D.CinnamonESA - Hypervelocity impacts and protecting spacecraftHypervelocity impact testing in early 1990s.In hypervelocity impacts,the projectile velocity exceeds the speed of sound within the target material.The resulting shockwave that propagates across the material is reflected by the surfaces of the target,and reverses its direction of travel.Discrete Particle Method for Simulating Hypervelocity Apr 02,2017·In this paper,we introduce a computational model for the simulation of hypervelocity impact (HVI) phenomena which is based on the Discrete Element Method (DEM).Our paper constitutes the first application of DEM to the modeling and simulating of impact
Laser simulation of hypervelocity impacts The hypervelocity impacts expected for DISC can be efficiently simulated in laboratory using a laser following the late stage equivalence laser intensity,beam area,and pulse duration can be adjusted to match the particle parameters requested .Since laser-simulated impacts have to match the GROUND SIMULATION OF HYPERVELOCITY SPACE DEBRISHypervelocity space debris impacts can lead to degradation of satellite performance and,in extreme cases,might cause a total loss of a spacecraft.The increase in space debris population provides the motivation for this study,which focuses mainly on the mechanical behavior of space-qualified polyimide Kapton films impacted by simulated hypervelocity debris.Hypervelocity Impact on Concrete and SandstoneJun 16,2020·Concrete,sandstone,and,in a previous round of experiments,pumice,were tested under hypervelocity impact at SwRI.Steel spheres with diameters of 1 and 1.75 in were shot at a velocity of approximately 2 km/s using a 50-mm conventional powder gun.The targets were mounted on a swing so that the momentum enhancement could be measured.
Hypervelocity Shielding Workshop,8 -11 March 1998,Galveston,Texas TP031 Numerical Simulation of Hypervelocity Impacts on Steel and Nextel/Kevlar Whipple ShieldsParticle-based modeling of hypervelocity impact and ABSTRACT Numerical simulations of hypervelocity impact (HVI) phenomena are an important part of hypervelocity research,but also face challenges due to the large deformations and shock wave discontinuities involved.Projectile Projectile mass,mp (mg) Initial velocity,vi (km/sec) Initial shock pressure,Pi (GPa) a a The Depth of depression (mm) D b b Density of the iron target is 7. depth b b Density of the iron target is V b b Density of the iron target is 7. SUS304 33.6 1.817 7 n.d.sphere,diameter ( d ) = 2 mm 33.5 1.916 7 n.d.sphere,diameter ( d ) = 2 mm 33.5 1.898 7 n.d.8 more rows ·Abstract This paper presents numerical simulations of hypervelocity impacts of 0.5-mm steel spheres into graphite,for velocities ranging between 1100 and 4500 m/s.Experiments have evidenced a non-monotonic evolution of the projectile penetration depth,along with the trapping of the projectile below the crater surface.
hypervelocity impact physicshypervelocity impact symposiumhypervelocity gunhypervelocity projectile programhypervelocity artillerySome results are removed in response to a notice of local law requirement.For more information,please see here.12345NextSimulation and Experiments of Hypervelocity Impact in effect of a hypervelocity impact on container with granular fillings is expected to be highly attenuated.The experiments and simulations mentioned above all dealt with impact velocities less than ~ 900 m/s (except  with 1850 m/s) and mostly steel projectiles; onlySimulation of Hypervelocity Impact of a Whipple ShieldHypervelocity Impact.Velocity > 2.5 km/sec.Metal behaves like a fluid when impacted at these velocities.SPH a particle based method is necessary to model the structures Deformation is very large so classic Finite Elements (FE) cannot handle the deformation of the last plate.High Order FE can be used to model the 3rdplate as the impact velocity of the resulting particles are on the order of 700 m/sec
This paper is devoted to the results of simulations of hypervelocity impacts on thin aluminium plates using the Smoothed Particle Hydrodynamics (SPH) option of the LS-DYNA hydrocode.SPH is a meshless Lagrangian numerical technique used to model the fluid equations of motion.SPH has proved to be useful in certain class ofSimulations of hypervelocity impacts for asteroid Dec 01,2016·Simulations are performed in two- and three-dimensions,using a variety of equations of state and strength models for both the lab-scale and large-scale cases.This work is being performed as part of a systematic benchmarking study for the AIDA mission that includes other hydrocodes. Simulations of hypervelocity impacts for asteroid Study of Hypervelocity Projectile Impact on Thick Metal PlatesAbstractIntroductionMaterials and MethodsExperimental ResultsNumerical SimulationsConclusionAcknowledgmentsHypervelocity impacts generate extreme pressure and shock waves in impacted targets that undergo severe localized deformation within a few microseconds.These impact experiments pose unique challenges in terms of obtaining accurate measurements.Similarly,simulating these experiments is not straightforward.This study proposed an approach to experimentally measure the velocity of the back surface of an A36 steel plate impacted by a projectile.All experiments used a combination of a two-staSee more on hindawiCited by 14Publish Year 2016Author Shawoon K.Roy,Mohamed Trabia,Brendan OToole,Robert S.Hixson,Steven Becker,Michael T.Pena,RSIMULATION OF HYPERVELOCITY IMPACT ONAn example of the latter class of problems is the simulation of hypervelocity impact on orbital debris shielding (Christiansen et al.,1999).Although significant advances have been made in the formulation and improvement of ALE and SPH techniques,it appears from