Accession Number : AD0734020

Title :   Photoelastic Determination of Required Reinforcement for a Submarine Hatch.

Descriptive Note : Final formal progress rept. Nov 68-Sep 70,

Corporate Author : SANDERS ASSOCIATES INC NASHUA N H

Personal Author(s) : Becker,Herbert D. ; Pozerycki,John D. ; Colao,Angelo A.

Report Date : MAR 1971

Pagination or Media Count : 51

Abstract : Pressure induced stresses were determined photoelastically in the hatch reinforcement region of a submarine. The photoelastic model from a previous investigation was modified by the addition of large reinforcing plates which were machined down in stages. The experimental data at each stage provided the trend of structural behavior as a function of reinforcement size. The maximum stress was found to be 47 percent greater than the nominal circumferential value. It occurred in the area between the deviated rib and its adjacent rib when the largest reinforcement was used. With no reinforcement the maximum stress was as much as 70 percent above the nominal circumferential stress. (Author)

Descriptors :   (*HATCHES, STRESSES), (*SUBMARINES, HATCHES), PHOTOELASTICITY, REINFORCING MATERIALS, STRUCTURAL PROPERTIES

Subject Categories : Submarine Engineering

Distribution Statement : APPROVED FOR PUBLIC RELEASE