DETERMINATION OF NUMBER OF LOBES FOR GENERAL INSTABILITY FAILURE OF SUBMARINE PRESSURE HULLS

The submarine pressure hull, considered as a cylindrical shell stiffened by uniformly spaced transverse rings, is analyzed for the number of circumferential lobes for general collapse of shell and stiffeners. A "rigorous" expression of lobes is derived but its solution must be obtained by trial and error. Approximate expressions are then developed which closely agree with the "rigorous" solution and which can be easily used to provide explicit solutions for the number of lobes. Limited experimental results are given in support of the analyses. Prior determination of the number of lobes will result in a marked reduction of time in calculating the general instability pressure of submarine pressure hulls.

• Supplemental Notes:
  • Contributed by ASME Ocean Technology Division for presentation at the Winter Annual Meeting, New York, N.Y., Nov. 17-22, 1974.
• Corporate Authors:

  American Society of Mechanical Engineers

  Two Park Avenue
  New York, NY  United States  10016-5990
• Authors:
  • Lunchick, M E
• Publication Date: 1974-11

Media Info

• Features: References;
• Pagination: 4 p.

Subject/Index Terms

• TRT Terms: Design; Rings (Devices); Shells (Structural forms); Submarines
• Old TRIS Terms: Stiffened cylinders; Stiffening rings
• Subject Areas: Design; Marine Transportation; Vehicles and Equipment;

Filing Info

• Accession Number: 00072639
• Record Type: Publication
• Source Agency: American Society of Mechanical Engineers
• Report/Paper Numbers: 74-WA/PCT-8
• Files: TRIS
• Created Date: Dec 19 1974 12:00AM