Identification of Strain-Softening Properties and Computational Predictions of Localized Fracture.

Abstract

The main objective of the present investigation is to evaluate strain-softening formulations for contained fracture in cementitious materials such as concrete and geo-materials. This report includes two principal developments: a rational approach to identify softening properties due to tensile cracking and frictional slip from displacement controlled material testing, and a systematic verification of contained fracture computations from small-scale structural testing. To this end, a composite damage model is proposed to describe the degradation of strength and stiffness in the post-peak regime with the aid of a volume fraction formulation of localized damage within a finite element.

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Document Details

Document Type
Technical Report
Publication Date
Mar 01, 1984
Accession Number
ADA141866

Entities

People

  • B. Hurlbut
  • Jay R. Christensen
  • K. J. Willam
  • N. Bicanic
  • S. Sture

Organizations

  • University of Colorado Boulder

Tags

Communities of Interest

  • Energy and Power Technologies
  • Weapons Technologies

DTIC Thesaurus Topics

  • Air Force
  • Boundaries
  • Boundary Value Problems
  • Closed Loop Systems
  • Composite Materials
  • Computational Science
  • Continuum Mechanics
  • Failure Mode And Effect Analysis
  • Fracture (Mechanics)
  • Materials
  • Mechanics
  • Modulus Of Elasticity
  • Plastic Properties
  • Shear Stresses
  • Shear Tests
  • Stiffness
  • Stress Strain Relations

Fields of Study

  • Engineering

Readers

  • Computational Fluid Dynamics (CFD)
  • Facility/Structural Engineering.
  • Mechanical Engineering/Mechanics of Materials.