THE SHEAR BUCKLING PROPERTIES OF SQUARE PANELS OF WOVEN ROVING LAMINATE.

Abstract

Experimental verification has been made of the previously developed theoretical analysis, and corresponding design data sheet, which permits the prediction of critical shear buckling stresses for square panels of orthotropic material with clamped edges for any angle that the principal axis of elasticity makes with the reference edge. The theory correctly predicts low values of buckling stress for a 135-degree angle for materials in which the elastic constants in the two principal directions are widely different. Experiments with a woven roving laminate, in which the ratio of moduli in the principal directions is 2:1, show buckling stresses 15 percent lower than the predicted values. The differences are accounted for by the knowledge that theory predictions are about 5 percent high and by variations in properties and dimensions of actual materials which preclude the development of full buckling strength. A recommendation is made to utilize the data sheet with due consideration given to these differences.

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Document Details

Document Type
Technical Report
Publication Date
Jun 20, 1963
Accession Number
AD0410504

Entities

People

  • H. V. Cordiano

Tags

Communities of Interest

  • Air Platforms
  • Weapons Technologies

DTIC Thesaurus Topics

  • Elastic Properties
  • Flexural Properties
  • Laminated Plastics
  • Laminates
  • Materials
  • Materials Processing
  • Mechanical Properties
  • Modulus Of Elasticity
  • Navy
  • Plastics
  • Reinforced Plastics
  • Shear Modulus
  • Shear Properties
  • Shear Stresses
  • Shear Tests
  • Stress Strain Relations
  • Stresses

Readers

  • Polymer Science and Engineering.
  • Structural Dynamics.