Adaptive Finite Element Processes in Structural Mechanics.

Abstract

For a general assessment of the structure, qualitative results about the displacements, stress-distributions, etc. are needed with an engineering accuracy of, say 10-20%. On the other hand, the indicated decisions are based usually on relatively few data items with a higher accuracy, say, in the range of 2-5%, such as, the displacements or stresses in certain known critical points, stress-intensity factors, etc. To achieve these diverse objectives the computational procedures should include the following features: (1) Facilities for effective and reliable estimation of the errors of the computed results; (2) Adaptively controlled computations; (3) Post-processing facilities. Certain specific questions relating to the theoretical and computational aspects of the three features are addressed.

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Document Details

Document Type
Technical Report
Publication Date
Jan 01, 1983
Accession Number
ADA127010

Entities

People

  • Ivo Babuška
  • Werner Rheinboldt

Organizations

  • University of Pittsburgh

Tags

Communities of Interest

  • C4I
  • Human Systems

DTIC Thesaurus Topics

  • Algorithms
  • Artificial Intelligence
  • Boundary Value Problems
  • Closed Loop Systems
  • Computations
  • Engineering
  • Equations
  • Errors
  • Estimators
  • Feedback
  • Finite Element Analysis
  • Materials
  • Mechanics
  • Numerical Analysis
  • Structural Mechanics
  • Theorems
  • Two Dimensional

Readers

  • Finite Element Method (FEM) for solving Partial Differential Equations (PDEs)
  • Materials Science (Mechanical Engineering).
  • Team-Based Human-Centered Cognitive Task Decision Making and Information Performance.