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Accession Number:
AD0612100
Title:
THE EFFECT OF INITIAL IMPERFECTIONS ON THE COLLAPSE STRENGTH OF DEEP SPHERICAL SHELLS
Corporate Author:
DAVID TAYLOR MODEL BASIN WASHINGTON DC
Report Date:
1965-02-01
Abstract:
An analysis is developed to account for the effects of imperfections on the collapse strength of spherical shells. The analysis is empirical but is based on an engineering evaluation of recent tests of near-perfect deep spherical shells and spherical caps. Sixty-two models were machined with local thin spots and flat spots and subjected to external hydrostatic pressure. The analysis is in good agreement with experimental results despite the severity of imperfections selected to test the analysis. The limitations of the analysis are discussed and curves showing the relationship between out of roundness and local radius are presented to aid the design engineer in establishing acceptable tolerance limits for fabrication of spherical shells.
Descriptive Note:
Final rept.
Supplementary Note:
DOI: 10.21236/AD0612100
Pages:
0040
Distribution Statement:
Approved for public release; distribution is unlimited.
File Size:
2.28MB
