Stress Analysis of a 100-Inch (CW-351) Plastic Polypropylene Dome.

Abstract

The author concludes that under a 35 knot, 10 degree of yaw maneuver, very large bending stresses result at the dome flange connection to the skirt. These stresses are calculated to be on the order of 66,000 psi, far in excess of the strength of the polypropylene material. Under all other conditions of loading, the dome appears to be adequate for service. Creep or long time loadings have not been considered in the analyses. He recommends: (1) The present design of the dome be rejected; and (2) additional design studies be performed. Consideration should be given to use of a composite or sandwich structure up at the flange portion, as a means of providing additional strength. The effect on the sonar should, of course, be evaluated.

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Document Details

Document Type
Technical Report
Publication Date
Jan 22, 1964
Accession Number
ADA071762

Entities

People

  • Matthew F. Borg

Organizations

  • Navy Underwater Sound Laboratory

Tags

Communities of Interest

  • Ground and Sea Platforms

DTIC Thesaurus Topics

  • Bending Stress
  • Bodies
  • Composite Materials
  • Creep
  • Equations
  • Fabrication
  • Internal Pressure
  • Materials
  • Materials Processing
  • Mechanical Working
  • Mechanics
  • New York
  • Pressure Distribution
  • Sonar Domes
  • Stresses
  • Structural Components
  • Tensile Stress

Readers

  • Marine Hydrodynamics
  • Mechanical Engineering/Mechanics of Materials.
  • Systems Analysis and Design