Wave Propagation in Anisotropic Rocks

Abstract

The report summarizes progress on the analytical and experimental aspects of the investigation concerned with wave propagation resulting from impact on a Yule marble block and an investigation of its mechanical properties. The system was modeled as a transversely isotropic halfspace with the elastic symmetry axis lying in the free surface, loaded by a concentrated normal force of arbitrary time variation. The analysis for the displacements, strains and stresses in the interior is complete and numerical results have been obtained by integral transform methods. A corresponding finite element program has also been completed. Transducer packages for the measurement of stresses in the interior of a Yule marble block have been developed, calibrated and tested. Drilling and embedment techniques for the testing of the Yule marble blocks under actual impact conditions have been evolved. Static and dynamic tests in tension and compression for various orientations of samples have been completed as well as cyclic loading, creep and some fracture tests.

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Document Details

Document Type
Technical Report
Publication Date
Sep 25, 1972
Accession Number
AD0749976

Entities

People

  • Jerome L. Sackman
  • Werner Goldsmith

Organizations

  • University of California, Berkeley

Tags

Communities of Interest

  • Air Platforms

DTIC Thesaurus Topics

  • Cartesian Coordinates
  • Computer Programming
  • Computer Programs
  • Computers
  • Convolution Integrals
  • Creep
  • Drop Tests
  • Dynamic Tests
  • Finite Element Analysis
  • Measurement
  • Mechanical Properties
  • Mechanics
  • Piezoelectric Crystals
  • Stress Strain Relations
  • Stresses
  • Test And Evaluation
  • Wave Propagation

Readers

  • Fluid Dynamics.
  • Mechanical Engineering/Mechanics of Materials.