Accession Number : AD0617364

Title :   INVESTIGATION OF THE STRENGTH-WEIGHT CHARACTERISTICS OF CYLINDRICAL SANDWICH-TYPE PRESSURE HULL STRUCTURES,

Corporate Author : DAVID TAYLOR MODEL BASIN WASHINGTON D C

Personal Author(s) : Blumenberg,William F. ; Hom,Kenneth ; Pulos,John G.

Report Date : MAY 1965

Pagination or Media Count : 46

Abstract : Seven structural models fabricated (welded construction) of nominal 100,000-psi yield steel were designed and tested to collapse under external hydrostatic pressure to investigate the strength-weight characteristics of cylindrical sandwich pressure hulls. Four of these models were comprised of two concentric cylindrical shells with a core of annular web-type stiffeners, two others had toroidal tube-type stiffening elements, and the core of the seventh model consisted of straight tube elements oriented in the longitudinal direction. The results of this series of hydrostatic tests indicate that in certain ranges and subject to certain restrictions on geometry, sandwichtype cylindrical pressure hulls may possess structural efficiencies on the order of 10 to 20 percent higher than those for conventional ring-stiffened constructions. The sandwich concept provides a practical and efficient means for fabricating the thick walls required in vehicles for deep-depth operation. (Author)

Descriptors :   (*SANDWICH CONSTRUCTION, SUBMARINE HULLS), (*SUBMARINE HULLS, SANDWICH CONSTRUCTION), (*CYLINDRICAL BODIES, SANDWICH CONSTRUCTION), (*SHELLS(STRUCTURAL FORMS), SANDWICH CONSTRUCTION), STIFFENED CYLINDERS, WELDS, STEEL, MODEL TESTS, HYDROSTATIC PRESSURE, STRESSES, REINFORCING MATERIALS, RINGS, STRUCTURAL PROPERTIES, FAILURE(MECHANICS)

Distribution Statement : APPROVED FOR PUBLIC RELEASE