Numerical Investigation of Miter Gates

Abstract

This report presents results of a three-dimensional (3-D) finite element analysis of a generic miter gate with multiple cracks used to calculate the stress intensity factor using the J-integral approach. The model was also used to determine the optimum diagonals prestressing. Stress intensity factors and J-integral approach were validated numerically against closed-form solutions of semi-infinite plates with through-thickness cracks, double-edged cracks, single-edged crack, and cracks growing from round holes. Only a 2 percent difference between the closed-form solution and the numerical calculated values was obtained. Additionally, the report shows meshing techniques that facilitated the construction of the complex 3-D model. Finally, results and graphical methods of the parametric analysis to calculate the optimum diagonal prestresses are illustrated.

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Document Details

Document Type
Technical Report
Publication Date
Jun 01, 2009
Accession Number
ADA501252

Entities

People

  • Guillermo A Riveros
  • Jaime Perez
  • Jorge L. Ayala Burgos

Organizations

  • Engineer Research and Development Center

Tags

Communities of Interest

  • Air Platforms
  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Computational Science
  • Coordinate Systems
  • Failure Mode And Effect Analysis
  • Finite Element Analysis
  • Fracture (Mechanics)
  • Geometry
  • J Integrals
  • Mathematical Analysis
  • Mechanical Properties
  • Mechanics
  • Modulus Of Elasticity
  • Parametric Analysis
  • Stress Intensity Factors
  • Stresses
  • Temperature Gradients
  • Three Dimensional
  • Two Dimensional

Fields of Study

  • Engineering

Readers

  • Computational Fluid Dynamics (CFD)
  • Materials Science (Mechanical Engineering).
  • Structural Health Monitoring of Composite Structures.