Numerical Analysis of Dynamic Crack Propagation: Generation and Prediction Studies.

Abstract

Results of 'generation' (determination of dynamic stress-intensity factor variation with time, for a specified crack-propagation history) studies, as well as 'prediction' (determination of crack-propagation history for specified dynamic fracture toughness versus crack-velocity relationships) studies of dynamic crack propagation in plane-stress/strain situations are presented and discussed in detail. These studies were conducted by using a transient finite element method wherein the propagating stress-singularities near the propagating crack-tip have been accounted for. Details of numerical procedures for both the generation and prediction calculations were succinctly described. In both the generation and prediction studies, the present numerical results are compared with available experimental data. It is found that the important problem of dynamic crack propagation prediction can be accurately handled with the present procedures. (Author)

Open PDF

Document Details

Document Type
Technical Report
Publication Date
Jul 01, 1981
Accession Number
ADA103078

Entities

People

  • S. N. Atluri
  • T. Nishioka

Organizations

  • Georgia Tech

Tags

Communities of Interest

  • Air Platforms

DTIC Thesaurus Topics

  • Cantilever Beams
  • Civil Engineering
  • Crack Propagation
  • Crack Tips
  • Engineering
  • Experimental Data
  • Finite Element Analysis
  • Fracture (Mechanics)
  • Intensity
  • Kinetic Energy
  • Mechanics
  • Numerical Analysis
  • Stress Intensity Factors
  • Stress Waves
  • Stresses
  • Toughness
  • Two Dimensional

Readers

  • Finite Element Method (FEM) for solving Partial Differential Equations (PDEs)
  • Materials Science (Mechanical Engineering).
  • Systems Analysis and Design