Creep and Fracture Characteristics of Materials and Structures at Elevated Temperatures.

Abstract

A major focus of the first year was on the mixed-mode fracture problem. Theoretical work on the computational methodology for the calculation of mixed-mode stress intensity factors was performed. The convergence properties of several algotithms were delineated and guidelines for the accurate calculation of mixed-mode stress intensity factors were established. This study also investigated the effects and influence of loading holes on the calculations. Appendices contained in this report refer to Determination of Two-Dimensional Stress Intensity; Fracture Under Mixed-Mode Loading; Prediction of Plasticity Characteristics for Three-Dimensional Fracture Specimens Comparison With Experiment; Accurate Modeling of Ductile and Creep Fracture Specimens and Processes; Creep Testing and Constitutive modeling; Finite Element Formulation for Creep Problems; Finite Element Methodology for Elastic Fracture Problems in 3-Dimensions.

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Document Details

Document Type
Technical Report
Publication Date
Feb 14, 1986
Accession Number
ADA166575

Entities

People

  • Harold Liebowitz

Organizations

  • George Washington University

Tags

Communities of Interest

  • Air Platforms
  • Energy and Power Technologies
  • Ground and Sea Platforms
  • Weapons Technologies

DTIC Thesaurus Topics

  • Civil Engineering
  • Composite Materials
  • Creep
  • Finite Element Analysis
  • Geometry
  • Materials
  • Materials Science
  • Measurement
  • Mechanical Engineering
  • Mechanical Properties
  • Mechanics
  • Modulus Of Elasticity
  • Strain Gages
  • Stress Strain Relations
  • Stresses
  • Three Dimensional
  • Two Dimensional

Readers

  • Business Analytics
  • Computational Fluid Dynamics (CFD)
  • Materials Science (Mechanical Engineering).