Accession Number:

AD0600082

Title:

STRESS CONCENTRATION IN NON-LINEAR CREEP OF A SIMPLE SHELL.

Descriptive Note:

Technical rept. no. 36,

Corporate Author:

BROWN UNIV PROVIDENCE R I

Personal Author(s):

• Calladine,C. R.

Report Date:

1963-12-01

Pagination or Media Count:

21.0

Abstract:

A long thin circular cylindrical shell is loaded at one edge by symmetrical radial shear Q sub x and bending moment M sub x no interior pressure. The shell is made of material which under applied stress creeps with a strain rate which is proportional to the rth power of the stress. Previous results are used to derive, approximately, the greatest stress in the shell for any Q sub x, M sub x and r. It is shown that for any edge load the greatest stress decreases as r increases, and is approximately a linear function of 1r. The case r 1 is exactly analogous to a linear elastic problem, and the case r approaches infinity corresponds exactly to a perfectly plastic problem results for any exponent r may thus be found approximately by simple interpolation between results obtained in linear-elastic analysis and perfectly plastic analysis. See also AD-429 287. Author

Descriptors:

• *SHELLS(STRUCTURAL FORMS)
• CREEP
• LOADING(ORDNANCE PROJECTORS)
• PLASTIC PROPERTIES
• NONLINEAR SYSTEMS
• SUBMARINE HULLS

Subject Categories:

Distribution Statement:

APPROVED FOR PUBLIC RELEASE