Accession Number:

AD0607694

Title:

WEIGHT ESTIMATES OF RING-STIFFENED, TRUNCATED CONE SHELLS, SUBJECTED TO EXTERNAL PRESSURE AND AXIAL COMPRESSION SIMULTANEOUSLY,

Descriptive Note:

Corporate Author:

TRW SPACE TECHNOLOGY LABS LOS ANGELES CALIF

Personal Author(s):

• Baer,Henry W.

Report Date:

1960-08-29

Pagination or Media Count:

25.0

Abstract:

Approximate expressions are evolved for the required weight of truncated, conical shells, stiffened at equal intervals with rings. Three cases of loading are considered, namely, external pressure only, axial compression only and a combination of the two. In the first and third loading cases, the number of ring-stiffened bays is determined by successive computations, until the number of stiffener rings is found for which the over-all weight of the structure is a minimum. Expressions are presented which -- for a given shell geometry and given loading -- define the weight, the skin thicknesses of each bay and the stiffener-ring thicknesses, provided the following quantities are specified Modulus of elasticity and density of shell- and stiffener-material, half-angle of truncated cone shell, base and top radii, applied external pressure and applied axial compression force. The example problem further shows that minimumweight design entails a structure with a large number of stiffener rings with relatively small width- and thicknessdimensions. Author

Descriptors:

• *SHELLS(STRUCTURAL FORMS)
• *CONICAL BODIES
• WEIGHT
• WEIGHT
• STRUCTURAL COMPONENTS
• RINGS
• PRESSURE
• COMPRESSIVE PROPERTIES
• LOADS(FORCES)
• STATISTICAL ANALYSIS
• THICKNESS

Subject Categories:

Distribution Statement:

APPROVED FOR PUBLIC RELEASE