Wave Propagation in Anisotropic Rocks

Abstract

The report summarizes the results of a two-year analytical and experimental effort concerned with the investigation of body waves and surface waves in isotropic and anisotropic half-spaces. These were modeled by large blocks of limestone and Yule marble, respectively, that were subjected to pulses produced by the impact of steel spheres on loading bars attached normally to the surface of these blocks. The results were compared with stress histories measured by specially-designed and calibrated crystal transducers. The dynamic constants needed for the anisotropic analysis were obtained from wave velocity measurements in various directions on the Yule marble block and an optimization procedure subjected to certain physical constraints. Static and dynamic tests in tension and compression for various orientations of Yule marble samples, as well as cyclic loading, creep and some fracture tests have also been executed on samples of Yule marble.

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Document Details

Document Type
Technical Report
Publication Date
Jun 01, 1973
Accession Number
AD0761203

Entities

People

  • Jerome L. Sackman
  • Werner Goldsmith

Organizations

  • University of California, Berkeley

Tags

Communities of Interest

  • Advanced Electronics
  • Air Platforms
  • Sensors
  • Weapons Technologies

DTIC Thesaurus Topics

  • Accuracy
  • Computational Science
  • Computer Programming
  • Computer Programs
  • Creep
  • Crystal Structure
  • Elastic Properties
  • Finite Element Analysis
  • Measurement
  • Mechanical Properties
  • Mechanical Working
  • Mechanics
  • Modulus Of Elasticity
  • Phase Velocity
  • Stress Strain Relations
  • Stress Waves
  • Test And Evaluation

Readers

  • Computational Modeling and Simulation
  • Mechanical Engineering/Mechanics of Materials.

Technology Areas

  • Space