Stress Intensity Solutions for Corner and Through-the-Thickness Cracks at a U-Shaped Notch (Preprint)

Abstract

Stress intensity factor solutions for corner and through cracks growing from a u-shaped edge notch are required to improve the accuracy of damage tolerance analyses for continuing damage scenarios. Closed-form K-solutions for through-the-thickness and corner cracks under remote axial loading were developed using 3-D finite element (FE) models for wide plates. Finite width corrections were determined based on FE models for a wide range of finite plate geometries. The finite width models included boundary conditions with and without far edge constraints as an option to account for in-plane bending due to geometric asymmetry. The resulting solutions are valid for notch depths resulting from equivalent hole edge distances (e/D) from 0.0 to 49.5.

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Document Details

Document Type
Technical Report
Publication Date
Sep 01, 2012
Accession Number
ADA568215

Entities

People

  • James A. Harter

Organizations

  • Air Force Research Laboratory

Tags

Communities of Interest

  • Air Platforms

DTIC Thesaurus Topics

  • Accuracy
  • Air Force
  • Air Force Facilities
  • Air Force Research Laboratories
  • Boundaries
  • Geometry
  • Intensity
  • Military Research
  • Sizes (Dimensions)
  • Stress Concentration
  • Stress Intensity Factors
  • Stresses
  • Thickness
  • Three Dimensional
  • Two Dimensional
  • United States

Readers

  • Plasma Physics / Magnetohydrodynamics
  • Structural Health Monitoring of Composite Structures.