Dynamic Fracture Criteria of Homogeneous Materials

Abstract

A successful computational and experimental procedure has been developed for predicting shock-induced damage in brittle and ductile materials. This procedure results in the determination of two material functions namely, the nucleation rate and the growth rate for microscopic voids, which eventually coalesce to form fracture. These nucleation and growth rate material functions are dependent on stress, temperature, and time. During this project the authors measured the stress and time dependence of these functions at room temperature for 1145 Al, OFHC copper, and Armco iron. Additional but less complete data have been obtained for 2024-T81 Al, high purity Al, high purity iron, and Los Alamos Scientific Laboratory (LASL) graphite.

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Document Details

Document Type
Technical Report
Publication Date
Feb 01, 1972
Accession Number
AD0893701

Entities

People

  • Damian Curran
  • L. Seaman
  • T. W. Barbee Jr.

Organizations

  • SRI International

Tags

Communities of Interest

  • Air Platforms
  • Weapons Technologies

DTIC Thesaurus Topics

  • Composite Materials
  • Computational Science
  • Computer Programs
  • Crystal Structure
  • Materials
  • Materials Laboratories
  • Mechanical Properties
  • Mechanical Working
  • Mechanics
  • Modulus Of Elasticity
  • Plastic Properties
  • Stress Strain Relations
  • Stress Waves
  • Stresses
  • Tensile Strength
  • Test And Evaluation
  • Yield Strength

Fields of Study

  • Physics

Readers

  • Materials Science (Mechanical Engineering).
  • Thin Film Deposition Science.