The Interaction of Kinetic Energy Penetrators With Geomaterials and Concrete.

Abstract

A large diameter split Hopkinson pressure bar (SHPB) was used to generate dynamic shear strength and confined/unconfined compressive data for mortar. In addition quasistatic shear and compressive strength data were generated for the same mortar. The new shear specimen was modeled using finite element analysis to verify its validity. Strain rate sensitivity of the shear response of mortar is very similar to that of the tension and compression data. A new elastic/viscoplastic constitutive equation was developed for mortar. This equation, rather simple in concept and expression, captures the main features of the material response such as compressibility and dilatancy strain-hardening, influence of the loading rate and creep and relaxation. This model can be easily extended to 3-D conditions.

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Document Details

Document Type
Technical Report
Publication Date
Jan 01, 1999
Accession Number
ADA359672

Entities

People

  • C. Allen Ross
  • Michael J. Schmidt
  • N. D. Cristescu
  • Oana Cazacu

Organizations

  • University of Florida

Tags

Communities of Interest

  • Weapons Technologies

DTIC Thesaurus Topics

  • Compressive Strength
  • Constitutive Equations
  • Creep
  • Electrical Resistance
  • Failure Mode And Effect Analysis
  • Finite Element Analysis
  • Geometry
  • Materials
  • Materials Science
  • Mechanics
  • Shear Strength
  • Strain Gages
  • Strain Hardening
  • Strain Rate
  • Stress Strain Relations
  • Three Dimensional
  • Transducers

Readers

  • Computational Fluid Dynamics (CFD)
  • Mechanical Engineering/Mechanics of Materials.