Cracks, A FORTRAN IV Digital Computer Program for Crack Propagation Analysis

Abstract

The report presents a detailed description of a computer program for analyzing crack propagation in cyclic loaded structures. The program has the option of using relationships derived by Forman or by Paris for crack growth. Provisions are made for both surface flaws and "through cracks" as well as the transition from the former to the latter. The program utilizes a block loading concept wherein the load is applied for a given number of cycles rather than applied from one cycle number to another cycle number. Additional features of the program are: variable print interval, variable integration interval, and optional formats for loads input. Detailed input instructions and an illustrative problem are presented.

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Document Details

Document Type
Technical Report
Publication Date
Oct 01, 1970
Accession Number
AD0717150

Entities

People

  • Robert M. Engle Jr.

Organizations

  • Flight Dynamics Laboratory

Tags

Communities of Interest

  • Engineered Resilient Systems

DTIC Thesaurus Topics

  • Air Force
  • Air Force Facilities
  • Computer Programs
  • Computers
  • Crack Propagation
  • Cracks
  • Digital Computers
  • Fracture (Mechanics)
  • Geometry
  • Government Procurement
  • Instructions
  • Intensity
  • Intervals
  • Mechanics
  • Numerical Analysis
  • Stress Intensity Factors
  • Tensile Stress

Fields of Study

  • Computer science

Readers

  • Computer Science.
  • Materials Science (Mechanical Engineering).