Modeling Techniques for Analysis of Stiffened Shell Structures, Using Computer Program Adina.

Abstract

The beam element available in computer program ADINA is inadequate for transient analysis of eccentrically stiffened shell structures, particularly when the lateral stability of the stiffener is of concern. As an alternative to modeling shell stiffeners with numerous continuum or transition elements, a stiffener modeling technique based on the multipoint constraint option in ADINA is presented. This technique leads to significant reductions in the number of elements and solution degrees of freedom needed for accurate stiffener modeling, yet allows inclusion in the analysis of effects of out-of-plane web distortion, longitudinal warping, and torsion. Stiffeners having various cross sectional geometries and boundary conditions have been modeled, and predicted response correlates well with experimental data. The approach is of practical significance for large stiffened shell problems, especially nonlinear analysis. (Author)

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Document Details

Document Type
Technical Report
Publication Date
Nov 01, 1981
Accession Number
ADA108728

Entities

People

  • Thomas A. Giacofci

Tags

Communities of Interest

  • Ground and Sea Platforms

DTIC Thesaurus Topics

  • Boundaries
  • Cartesian Coordinates
  • Computer Programs
  • Computers
  • Displacement
  • Distortion
  • Elements
  • Equations
  • Experimental Data
  • Geometry
  • Inclusions
  • Instability
  • Nonlinear Analysis
  • Rotation
  • Ships
  • Three Dimensional
  • Transition Metals

Fields of Study

  • Physics

Readers

  • Structural Dynamics.