Accession Number : AD0861848

Title :   Rigid Body Response of an Elastically-Restrained Cylindrical Deep Ocean Structure to Detonation-Induced Underwater Shock.

Descriptive Note : Technical note Sep 68-Sep 69,

Corporate Author : NAVAL CIVIL ENGINEERING LAB PORT HUENEME CA

Personal Author(s) : Zwibel, Harry S. ; Hammer, John G.

Report Date : NOV 1969

Pagination or Media Count : 31

Abstract : Issuing this Technical Note at this time was considered appropriate as a means of reporting interim progress toward the long-range goals. The significant accomplishments are the development of a workable computer program for predicting peak accelerations and maximum displacements of the structures being considered. The implications of using the acoustical approximation are explored, and it is concluded that the procedure followed accurately predicts the peak acceleration, since in all cases of practical interest this acceleration occurs prior to the development of significant viscous drag. A result is obtained for maximum displacement of the structure, which in some cases is an upper bound; but further study is indicated to determine the effect of the perturbation caused by the viscous drag. (Author)

Descriptors :   (*SHELLS(STRUCTURAL FORMS), UNDERWATER), (*UNDERWATER EXPLOSIONS, DETONATION WAVES), NUCLEAR EXPLOSIONS, ELASTIC SHELLS, RESPONSE, MATHEMATICAL MODELS, APPROXIMATION(MATHEMATICS), SHOCK WAVES, ACOUSTICS, THEORY, HARDENING.

Subject Categories : Structural Engineering and Building Technology

Distribution Statement : APPROVED FOR PUBLIC RELEASE