Investigation into the Behavior of Geometrically Nonlinear Composite Arches.

Abstract

This research modifies the existing finite element formulation of a potential energy based large deformation and moderate rotation theory. Hermitian shape functions replace the existing linear bending angle interpolations. Negligible differences between the two formulations indicate the underlying kinematics limit the accuracy, not the finite element interpolations. Using the new program, numerous nonlinear arch geometries are modeled to investigate the effects of arc length and thickness variations. Local and global snapping phenomena are captured as well as through the thickness shear driven nonlinearities.

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Document Details

Document Type
Technical Report
Publication Date
Dec 01, 1994
Accession Number
ADA289258

Entities

People

  • John C. Bailey

Organizations

  • Air Force Institute of Technology

Tags

Communities of Interest

  • Air Platforms
  • Energy and Power Technologies
  • Space

DTIC Thesaurus Topics

  • Air Force
  • Composite Materials
  • Curvature
  • Elastic Properties
  • Engineering
  • Finite Element Analysis
  • Geometry
  • Laminates
  • Mechanics
  • Modulus Of Elasticity
  • Plastic Explosives
  • Potential Energy
  • Precision
  • Shape
  • Shear Modulus
  • Shear Stresses
  • Two Dimensional

Readers

  • Calculus or Mathematical Analysis
  • Computational Modeling and Simulation
  • Structural Dynamics.