Non-normal impact of earth penetrators

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Description

A brief literature review of the general subject of projectile penetration into soil media is presented. Particular emphasis is placed on projectiles impacting soil targets at other than normal incidence and/or at an angle of attack, for which lateral accelerations exist and can dominate the structural response. Comparisons of predicted lateral accelerations with recent earth penetrator experiments are then made using a 3 degree-of-freedom rigid-body approach developed elsewhere to determine the external penetrator loading. Agreement between experimental and calculated accelerations is favorable, but the need to include flexible-body response is indicated. Finally a scheme to incorporate a spherical-cavity-expansion analytical procedure ... continued below

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7 p.

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Duffey, T. A. & Macek, R. W. December 1996.

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Description

A brief literature review of the general subject of projectile penetration into soil media is presented. Particular emphasis is placed on projectiles impacting soil targets at other than normal incidence and/or at an angle of attack, for which lateral accelerations exist and can dominate the structural response. Comparisons of predicted lateral accelerations with recent earth penetrator experiments are then made using a 3 degree-of-freedom rigid-body approach developed elsewhere to determine the external penetrator loading. Agreement between experimental and calculated accelerations is favorable, but the need to include flexible-body response is indicated. Finally a scheme to incorporate a spherical-cavity-expansion analytical procedure into a detailed finite element model of the penetrator is developed to account for flexible-body response.

Physical Description

7 p.

Notes

OSTI as DE97003145

Source

  • Penetration and Impact problems, San Jose, CA (United States), May 1997

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  • Other: DE97003145
  • Report No.: LA-UR--96-4485
  • Report No.: CONF-970584--1
  • Grant Number: W-7405-ENG-36
  • Office of Scientific & Technical Information Report Number: 463647
  • Archival Resource Key: ark:/67531/metadc674251

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Office of Scientific & Technical Information Technical Reports

Reports, articles and other documents harvested from the Office of Scientific and Technical Information.

Office of Scientific and Technical Information (OSTI) is the Department of Energy (DOE) office that collects, preserves, and disseminates DOE-sponsored research and development (R&D) results that are the outcomes of R&D projects or other funded activities at DOE labs and facilities nationwide and grantees at universities and other institutions.

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  • December 1996

Added to The UNT Digital Library

  • July 25, 2015, 2:21 a.m.

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  • Feb. 25, 2016, 9:58 p.m.

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Duffey, T. A. & Macek, R. W. Non-normal impact of earth penetrators, article, December 1996; New Mexico. (digital.library.unt.edu/ark:/67531/metadc674251/: accessed April 26, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.