Accession Number:

ADA200994

Title:

Rigid, Perfectly Plastic Analysis of Ring-Stiffened Shells Under Dynamic Loading

Descriptive Note:

Corporate Author:

NAVAL SURFACE WARFARE CENTER SILVER SPRING MD

Personal Author(s):

Report Date:

1986-08-01

Pagination or Media Count:

247.0

Abstract:

This report treats the case of a long ring-stiffened circular cylindrical shell made of rigid-perfectly plastic material. The approximate Tresca square is used as yield surface with the corresponding associated flow rule. The shell is subjected to an external axisymmetric dynamic overpressure of rectangular form. Maximum permanent deformations are obtained. This report is the first step towards an ongoing effort to obtain a closed form or a relatively simple numerical solution to the problem of a ring-stiffened, circular cylindrical shell subjected to a dynamic pressure load. Maximum permanent deflections after load removal are obtained. The analytical solution of the dynamic problem, even under substantial simplifying assumptions, can be very complex and cumbersome. In this report, we rederive and extend the analytical solutions obtained by Hodge. Considerable simplification can be achieved if we are content with numerical treatment of the governing equations on the computer.

Subject Categories:

  • Structural Engineering and Building Technology
  • Mechanics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE