Pressure Waves in Soils Using a Split-Hopkinson Pressure Bar

Abstract

Soil specimen lengths of 2.0, 4.0 and 6.0 inches were tested in a split Hopkinson pressure bar (SHPB) to determine effects of grain size, moisture content, confining pressure, and specimen length on material dampg, wave speed and transmissibility. For these SHPB tests the soil specimen length was long compared to the pulse length of the loading pulse. Three different grain sizes were tested for determination of damping/attenuation coefficients. A medium to fine sandy soil was tested both statically and dynamically for effects of moisture content, and compaction energy. The main conclusion is that the split- Hopkinson pressure bar can be used to obtain meaningful data on soil properties at intermediate strain rates. Considerable scatter is also present in the laboratory data. If further soil tests at intermediate strain rates are desired then the SHPB should be modified to accommodate a triaxial test call.

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Document Details

Document Type
Technical Report
Publication Date
Jul 01, 1986
Accession Number
ADA172080

Entities

People

  • C. A. Ross
  • Gerard J. Friesenhahn
  • Phillip T. Nash

Organizations

  • Southwest Research Institute

Tags

Communities of Interest

  • Advanced Electronics
  • C4I
  • Sensors
  • Weapons Technologies

DTIC Thesaurus Topics

  • Acoustic Impedance
  • Elastic Waves
  • Electronic Equipment
  • Engineering
  • Grain Size
  • Gun Launchers
  • Measurement
  • Mechanics
  • Moisture Content
  • Particle Size
  • Pressure Gages
  • Pressure Measurement
  • Pressure Transducers
  • Strain Gages
  • Stress Strain Relations
  • Stress Waves
  • Wave Propagation

Readers

  • Geotechnical Engineering.
  • Mechanical Engineering/Mechanics of Materials.