Accession Number:

AD0871821

Title:

Investigation of Elastic Stability of Circular Toroidal Shells under Uniform External Pressure

Descriptive Note:

Final rept.`

Corporate Author:

DAVID W TAYLOR NAVAL SHIP RESEARCH AND DEVELOPMENT CENTER BETHESDA MD

Personal Author(s):

Report Date:

1970-05-01

Pagination or Media Count:

62.0

Abstract:

A series of eight plastic toroidal shell models of circular cross section covering a wide geometric range were designed, built, and tested under uniform external pressure. The results were compared to collapse pressure predictions of two analyses. One analysis agreed with experimental collapse pressure to within 10 percent for all but two of the models. The other analysis agreed with half the models tested to within 10 percent but seems to be too optimistic for certain geometries. Experimental strains were recorded and photographs were taken of the models undergoing deformation during testing. The test results and analytical predictions indicated that complete toroidal shells under uniform external pressure appear to be insensitive to imperfections. Author

Subject Categories:

  • Marine Engineering
  • Mechanics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE