Posttest, Two-Dimensional, Free-Field Calculation of HARD PAN I, Event 3: Calculation HPI-3.4

Abstract

The results of the pretest calculations of HARD PAN I Event 3 were analyzed and compared with experimental data to evaluate the accuracy of the input (pressure functions, geology, material properties) and output (computed velocity waveforms). Seismic velocities for a recommended geology were developed from contours of experimental times-of-arrival of first motion and incorporated into new material properties as the initial loading and unloading slope of the hydrostat. Lock-up strain values and shear failure envelopes were consistent with previous material properties and laboratory test results. The analysis indicated that the BLEST pressure function was satisfactorily modeled based on the impulse delivered to the soil. However, a new HEST pressure function which would accurately reflect the experimental pressure/time history was developed for the posttest calculations. Posttest calculation HPI-3.4 was performed with the new input and compared with experimental data. This comparison indicated fairly good agreement. Adjustment factors to modify the data for input to the Three-Dimensional, Structure/Media Interaction (SMI3D) Code were then recommended.

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Document Details

Document Type
Technical Report
Publication Date
Jun 01, 1977
Accession Number
ADB020287

Entities

People

  • Cornelius J. Higgins
  • David K. Rudeen
  • Glenn T. Baird

Organizations

  • University of New Mexico

Tags

DTIC Thesaurus Topics

  • Accelerometers
  • Accuracy
  • Air Force Facilities
  • Basements
  • Civil Engineering
  • Composite Materials
  • Engineering
  • Experimental Design
  • Free Field
  • Ground Zero
  • New Mexico
  • Research Facilities
  • Seismic Velocity
  • Test And Evaluation
  • Two Dimensional
  • Wave Propagation
  • Waves

Readers

  • Approximation Theory.
  • Explosive Engineering.
  • Geotechnical Engineering.