Aspects of Mechanical Behavior of Rock under Static and Cyclic Loading. Part B. Mechanical Behavior of Rock under Cyclic Loading

Abstract

The mechanical behavior of additional hard rock types under cyclic uniaxial compression and tension was studied, and a program of cyclic triaxial compression testing was initiated. All rocks (granite, sandstone, limestone, marble) exhibited cyclic fatigue characteristics in both tension and compression with fatigue strengths of 55-70% within 100,000 - 1,000,000 cycles. Prefailed granite exhibited substantial fatigue endurance. An inter-relationship between compression fatigue and the complete stress-strain curve has been demonstrated. For the same maximum stress cyclic stress amplitudes appear to affect fatigue life. In particular, indications are that compression-tension cyclic loading could be most damaging.

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Document Details

Document Type
Technical Report
Publication Date
Sep 01, 1972
Accession Number
AD0751572

Entities

People

  • Bezalel C. Haimson

Organizations

  • University of Wisconsin–Madison

Tags

Communities of Interest

  • Air Platforms

DTIC Thesaurus Topics

  • Acoustic Emissions
  • Cells
  • Compression
  • Cyclic Loads
  • Cyclic Tests
  • Determinants (Mathematics)
  • Engineering
  • Fatigue Life
  • Hysteresis
  • Laboratory Equipment
  • Load Cells
  • Measurement
  • Steady State
  • Strain Gages
  • Stress Strain Relations
  • Tensile Strength
  • Transducers

Readers

  • Geotechnical Engineering.
  • Structural Health Monitoring of Composite Structures.