Phenomenology of rapid projectile penetration into granular soils

Mehdi Omidvar, Jeanne Doreau Malioche, Stephan Bless, Magued Iskander

Research output: Contribution to journalArticle

Abstract

Eighty subscale penetration tests were performed to investigate penetration phenomenology in granular media, with impact velocities in the range of 70-300 m/s. The parameter space consisted of (1) four natural and synthetic granular materials, including Ottawa sand, crushed fused quartz, aragonite, and crushed coral, (2) loose and dense packings, (3) dry and wet targets, and (4) four different projectiles, including spheres and long rods with conical, hemispherical and blunt nose shapes. Two techniques were employed to obtain penetration time histories, including photonic Doppler velocimetry for high velocity impact tests, and high speed imaging for low velocity impact tests. Penetration time histories were differentiated to obtain velocity and acceleration time histories. Analysis of the time histories revealed that the role of nose shape, packing density, and saturation is material dependent. Silica sands and calcareous sands showed contrasting behavior across the parameter space considered. These observations point to the significance of particle crushing in rapid penetration into granular media.

Original languageEnglish (US)
Pages (from-to)146-160
Number of pages15
JournalInternational Journal of Impact Engineering
Volume85
DOIs
StatePublished - Jul 27 2015

Fingerprint

Projectiles
Soils
Sand
Silica sand
Granular materials
Crushing
Velocity measurement
Photonics
Quartz
Imaging techniques

Keywords

  • Granular media
  • High-speed imaging
  • Impact
  • Photonic Doppler velocimetry
  • Projectile
  • Sand

ASJC Scopus subject areas

  • Mechanical Engineering
  • Mechanics of Materials
  • Civil and Structural Engineering
  • Aerospace Engineering
  • Automotive Engineering
  • Ocean Engineering
  • Safety, Risk, Reliability and Quality

Cite this

Phenomenology of rapid projectile penetration into granular soils. / Omidvar, Mehdi; Malioche, Jeanne Doreau; Bless, Stephan; Iskander, Magued.

In: International Journal of Impact Engineering, Vol. 85, 27.07.2015, p. 146-160.

Research output: Contribution to journalArticle

Omidvar, Mehdi ; Malioche, Jeanne Doreau ; Bless, Stephan ; Iskander, Magued. / Phenomenology of rapid projectile penetration into granular soils. In: International Journal of Impact Engineering. 2015 ; Vol. 85. pp. 146-160.
@article{dbb924485d344661b5e03de112dd33d5,
title = "Phenomenology of rapid projectile penetration into granular soils",
abstract = "Eighty subscale penetration tests were performed to investigate penetration phenomenology in granular media, with impact velocities in the range of 70-300 m/s. The parameter space consisted of (1) four natural and synthetic granular materials, including Ottawa sand, crushed fused quartz, aragonite, and crushed coral, (2) loose and dense packings, (3) dry and wet targets, and (4) four different projectiles, including spheres and long rods with conical, hemispherical and blunt nose shapes. Two techniques were employed to obtain penetration time histories, including photonic Doppler velocimetry for high velocity impact tests, and high speed imaging for low velocity impact tests. Penetration time histories were differentiated to obtain velocity and acceleration time histories. Analysis of the time histories revealed that the role of nose shape, packing density, and saturation is material dependent. Silica sands and calcareous sands showed contrasting behavior across the parameter space considered. These observations point to the significance of particle crushing in rapid penetration into granular media.",
keywords = "Granular media, High-speed imaging, Impact, Photonic Doppler velocimetry, Projectile, Sand",
author = "Mehdi Omidvar and Malioche, {Jeanne Doreau} and Stephan Bless and Magued Iskander",
year = "2015",
month = "7",
day = "27",
doi = "10.1016/j.ijimpeng.2015.06.002",
language = "English (US)",
volume = "85",
pages = "146--160",
journal = "International Journal of Impact Engineering",
issn = "0734-743X",
publisher = "Elsevier Limited",

}

TY - JOUR

T1 - Phenomenology of rapid projectile penetration into granular soils

AU - Omidvar, Mehdi

AU - Malioche, Jeanne Doreau

AU - Bless, Stephan

AU - Iskander, Magued

PY - 2015/7/27

Y1 - 2015/7/27

N2 - Eighty subscale penetration tests were performed to investigate penetration phenomenology in granular media, with impact velocities in the range of 70-300 m/s. The parameter space consisted of (1) four natural and synthetic granular materials, including Ottawa sand, crushed fused quartz, aragonite, and crushed coral, (2) loose and dense packings, (3) dry and wet targets, and (4) four different projectiles, including spheres and long rods with conical, hemispherical and blunt nose shapes. Two techniques were employed to obtain penetration time histories, including photonic Doppler velocimetry for high velocity impact tests, and high speed imaging for low velocity impact tests. Penetration time histories were differentiated to obtain velocity and acceleration time histories. Analysis of the time histories revealed that the role of nose shape, packing density, and saturation is material dependent. Silica sands and calcareous sands showed contrasting behavior across the parameter space considered. These observations point to the significance of particle crushing in rapid penetration into granular media.

AB - Eighty subscale penetration tests were performed to investigate penetration phenomenology in granular media, with impact velocities in the range of 70-300 m/s. The parameter space consisted of (1) four natural and synthetic granular materials, including Ottawa sand, crushed fused quartz, aragonite, and crushed coral, (2) loose and dense packings, (3) dry and wet targets, and (4) four different projectiles, including spheres and long rods with conical, hemispherical and blunt nose shapes. Two techniques were employed to obtain penetration time histories, including photonic Doppler velocimetry for high velocity impact tests, and high speed imaging for low velocity impact tests. Penetration time histories were differentiated to obtain velocity and acceleration time histories. Analysis of the time histories revealed that the role of nose shape, packing density, and saturation is material dependent. Silica sands and calcareous sands showed contrasting behavior across the parameter space considered. These observations point to the significance of particle crushing in rapid penetration into granular media.

KW - Granular media

KW - High-speed imaging

KW - Impact

KW - Photonic Doppler velocimetry

KW - Projectile

KW - Sand

UR - http://www.scopus.com/inward/record.url?scp=84937809728&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84937809728&partnerID=8YFLogxK

U2 - 10.1016/j.ijimpeng.2015.06.002

DO - 10.1016/j.ijimpeng.2015.06.002

M3 - Article

VL - 85

SP - 146

EP - 160

JO - International Journal of Impact Engineering

JF - International Journal of Impact Engineering

SN - 0734-743X

ER -