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Title: Buckling of elliptical rings under uniform external pressure

A thin, elastic elliptical ring is subjected to uniform external pressure. The lowest critical pressure is computed and presented for various ratio of the major axis to the minor axis of the elliptical ring. It is found that the critical pressure for an elliptical ring is higher than that for the circular ring whose diameter is equal to the major axis of the elliptical ring. It can be shown that under the same external pressure, the axial force developed in the elliptical ring is less than that developed in the corresponding circular ring. Thus, a higher pressure is required to buckle the elliptical rings. Therefore, by changing the shape of the ring from circular to elliptical, the capability of the ring to sustain the external pressure can be increased substantially. The results of this study can be useful in the design of elliptical reinforcing rings and thin-walled tubes subjected to external pressure.
Authors:
Publication Date:
OSTI Identifier:
10134497
Report Number(s):
ANL/RE/PP--73076
ON: DE94008486; TRN: 94:003698
DOE Contract Number:
W-31109-ENG-38
Resource Type:
Technical Report
Resource Relation:
Other Information: PBD: 3 Apr 1991
Research Org:
Argonne National Lab., IL (United States)
Sponsoring Org:
USDOE, Washington, DC (United States)
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; SHELLS; MATERIAL BUCKLING; STRESS ANALYSIS; MECHANICAL STRUCTURES 360103; 360203; 360603; MECHANICAL PROPERTIES; MECHANICAL PROPERTIES; MECHANICAL PROPERTIES