GENERAL INSTABILITY OF CYLINDRICAL SHELLS WITH NON-UNIFORM STIFFENERS
Abstract
The work is a further step towards optimization of stiffened cylindrical shells. Rings and stringers of non-uniform cross-section are analysed as a means of obtaining higher structural efficiencies. For lateral pressure loading, rings with non-uniform height or width are compared. The gain in general instability pressure relative to the uniformly stiffened shell of the same weight amounts to 70-80%. For prescribed loading, 10-20% weight savings are obtained. For axially compressed cylinders, stringers with sinusoidal and linear height variation are studied and compared. Gains in load and weight savings of 30% and 10%, respectively, are obtained, and the sinusoidal variation is found to be superior to the linear variation. Finally, cylinders under hydrostatic pressure stiffened by a combination of uniform stringers and non- uniform rings are analysed. Different configurations are checked in order to obtain the highest possible efficiencies.
Document Details
- Document Type
- Technical Report
- Publication Date
- Aug 01, 1966
- Accession Number
- AD0649867
Entities
People
- Josef Singer
- Menahem Baruch
- Ovadia Harari
Organizations
- Technion – Israel Institute of Technology