A Simulation of Void Lining during Ductile Fracture.

Abstract

A computer model is developed for the simulation of low temperature ductile fracture of metals which contain random distributions of voids. Void distributions are modeled in two dimensions as arrays of circular holes which are characterized by area fraction, hole size, and a minimum hole spacing parameter which controls the degree of clustering. Experimentally measured local plasticity near holes provide the basis for the simulation, and predictions are made without the use of parameters to force fit. The simulation, illustrates the process of void linking with strain and correctly predicts the failure strains of aluminum and alpha-brass specimens over a range of hole-void microstructures. Keywords: Ductile fracture, Void linking, Porosity effects, Mechanism of fracture, Microvoids.

Open PDF

Document Details

Document Type
Technical Report
Publication Date
Sep 01, 1987
Accession Number
ADA188404

Entities

People

  • D. J. Srolovitz
  • Donald A. Koss
  • P. E. Magnusen

Organizations

  • Pennsylvania State University

Tags

Communities of Interest

  • Air Platforms

DTIC Thesaurus Topics

  • Aluminum
  • Clustering
  • Computer Simulations
  • Computers
  • Engineering
  • Experimental Data
  • Low Temperature
  • Materials
  • Materials Engineering
  • Materials Science
  • Michigan
  • Plastic Properties
  • Powder Metallurgy
  • Simulations
  • Strain Hardening
  • Two Dimensional
  • United States

Readers

  • Materials Science (Mechanical Engineering).
  • Regression Analysis.

Technology Areas

  • Space