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Accession Number:
AD0743951
Title:
Material Nonlinearity Effects in Optimization Considerations of Stiffened Cylinders and Interpretation of Test Data Scatter for Compressive Buckling
Corporate Author:
STANFORD UNIV CA DEPT OF AERONAUTICS AND ASTRONAUTICS
Report Date:
1972-03-01
Abstract:
A limited optimization study is undertaken of imperfect, eccentrically stiffened 2024-T3 aluminum alloy cylinders under axial compression based on 1 a linear theory with applied buckling load reduction factors to account for initial imperfections and inelasticity and 2 a kinematically and constitutively nonlinear maximum strength analysis. The latter is shown to be less conservative for the most efficient design combined stringer- and ring- stiffening. Credibility of the maximum strength approach is domonstrated through its use in correlating experimental results obtained for 10- and 14-in. diameter steel cylinders having different proportional-limit stresses, respectively. Finally, material nonlinearity is shown to offer a plausible qualitative explanation for a significant amount of the scatter in axial compression tests for cylinders with radius-to-thickness ratios of practical interest.
Descriptive Note:
Final technical rept.
Pages:
0062
Distribution Statement:
Approved for public release; distribution is unlimited.
Contract Number:
DAAJ02-70-C-0075
File Size:
2.85MB
