THE EFFECT OF INTERMEDIATE HEAVY FRAMES ON THE ELASTIC GENERAL-INSTABILITY STRENGTH OF RING-STIFFENED CYLINDERS UNDER EXTERNAL HYDROSTATIC PRESSURE

Abstract

Twenty-four machined models were collapsed under external hydrostatic pressure to evaluate the effect of intermediate heavy frames on the elastic general-instability strength of ringstiffened cylinders. The models were designed with various overall lengths, heavy-frame spacings, and heavy-frame sizes; the cylinder diameter, the shell thickness, and the typicalstiffener size and spacing were held constant. The test results indicate that the effectiveness of a particular size of intermediate heavy frame decreases as the cylinder is lengthened at least to six diameters and also that the minimum size of heavy frames necessary to localize the failure between the heavy frames is possibly not dependent upon their spacing. The values predicted by available analytical solutions show poor agreement with experimental results, whereas an existing empirical heavy-frame formula and a formula presented herein show better correlation.

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Document Details

Document Type
Technical Report
Publication Date
Feb 01, 1965
Accession Number
AD0458050

Entities

People

  • William F. Blumenberg

Tags

Communities of Interest

  • Ground and Sea Platforms

DTIC Thesaurus Topics

  • Agreements
  • Classification
  • Diameters
  • Geometry
  • Hydrostatic Pressure
  • Instability
  • Instrumentation
  • Materials
  • Measurement
  • Mechanics
  • Model Basins
  • Modulus Of Elasticity
  • Moment Of Inertia
  • Ring Stiffened Cylinders
  • Security
  • Stiffened Cylinders
  • Undersea Warfare

Readers

  • Mathematics or Statistics
  • Structural Dynamics.

Technology Areas

  • Space
  • Space - Space Objects