Reliable Stress and Fracture Mechanics Analysis of Complex Aircraft Components Using a H-P Version of FEM

Abstract

Effective approaches are developed with which complex three- dimensional components may be analyzed with a high and virtually guaranteed accuracy. The main computational tool is a h-p version of FEM practically realized with the p-version program STRIPE having a mesh generator for automatic mesh refinement at edges and vertices Use of advanced extraction methods and new theoretical approaches give exponential convergence rates for accuracies in all engineering data of interest. New methods for reliable calculation of local stresses and stress intensity data at edges and vertices to be used for fatigue dimensioning at fillets, damage tolerance assessment of three-dimensional flaws etc. are given. A complex real-life problem is reliably analyzed in order to demonstrate the practical usefulness of the procedures advocated. The technical details are given in forthcoming papers.

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Document Details

Document Type
Technical Report
Publication Date
Aug 01, 1992
Accession Number
ADA260628

Entities

People

  • Borje Andersson
  • Ivo Babuška
  • Tobias Von Petersdorff
  • Urban Falk

Organizations

  • National Aeronautical Research Institute

Tags

Communities of Interest

  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Aircraft Equipment
  • Aircraft Industry
  • Aircrafts
  • Boundary Layer
  • Computational Fluid Dynamics
  • Computational Science
  • Engineering
  • Finite Element Analysis
  • Fracture (Mechanics)
  • Fuselages
  • Mathematical Models
  • Mechanics
  • Military Research
  • Numerical Analysis
  • Standards
  • Three Dimensional
  • Two Dimensional

Fields of Study

  • Engineering

Readers

  • Finite Element Method (FEM) for solving Partial Differential Equations (PDEs)
  • Structural Health Monitoring of Composite Structures.
  • Systems Analysis and Design