Accession Number : AD0784795

Title :   Deformation of Elastic Spherical Shells with Random Initial Imperfections (O Deformatsii Uprugoi Afericheskoi Obolochki so Sluchainymi Nepravilnostyami),

Corporate Author : NAVAL INTELLIGENCE SUPPORT CENTER WASHINGTON D C TRANSLATION DIV

Personal Author(s) : Bolotin,V. V. ; Bolokhovskii,V. Yu.

Report Date : 31 JUL 1974

Pagination or Media Count : 11

Abstract : The equilibrium of a thin elastic spherical shell with small initial imperfections under the effect of a uniform pressure is investigated in a linearized position. It is assumed that deflections from the ideal form of the shell form a uniform random field with a correlation scale quite small as compared to the radius of the median surface. The mathematical expectation of the number of maximum, minimum and saddle points on a deformed surface is computed. An approximation equation for the number of overshoot of a deformed median surface for a given level is presented. The results obtained are used for the evaluation of reliability at limitations brought about in a full normal deflection of the shell.

Descriptors :   *Shells(Structural forms), Spheres, Defects(Materials), Loads(Forces), Deformation, Translations, USSR

Subject Categories : Mechanics

Distribution Statement : APPROVED FOR PUBLIC RELEASE