Buckling and Structural Efficiency of Sandwich-Blade Stiffened Composite Compression Panels.

Abstract

The minimum-mass structural efficiency curve is determined for sandwich-blade stiffened composite compression panels subjected to buckling and strength constraints. High structural efficiencies are attainable for this type of construction. A method of analysis is presented for the buckling of panels of this configuration which shows that buckling of such panels is strongly dependent on the through-the-thickness transverse shearing of the stiffener. Experimental results are presented from seven test specimens made of layered graphite/epoxy having stiffeners of sandwich construction with an aluminum honeycomb core, and there is good agreement between theory and experiment. (MM)

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Document Details

Document Type
Technical Report
Publication Date
Sep 01, 1978
Accession Number
ADA302350

Entities

People

  • Jerry G. Williams
  • Manuel Stein

Organizations

  • Langley Research Center

Tags

Communities of Interest

  • Air Platforms

DTIC Thesaurus Topics

  • Composite Materials
  • Construction
  • Curvature
  • Finite Element Analysis
  • Geometry
  • Graphitic Materials
  • Honeycomb Cores
  • Materials
  • Mechanical Properties
  • Modulus Of Elasticity
  • Sandwich Construction
  • Shape
  • Shear Modulus
  • Shear Stresses
  • Stiffness
  • Stress Strain Relations
  • Stresses

Fields of Study

  • Engineering
  • Physics

Readers

  • Structural Dynamics.