Ships – Submersible device
Patent
1995-10-06
1998-01-27
Basinger, Sherman
Ships
Submersible device
220669, B63B 313
Patent
active
057112444
ABSTRACT:
A structure for a pressure and buckling resisting hull has an undulated shell body with flat, plural, polyhedral faces, shell caps at the ends, and transition sections attaching the shell caps to the shell body. The shell body polyhedral faces may be generally triangular or generally trapezoidal and are truncated triangular in shape for reducing material stress and for increasing buckling resistance. The top-to-base length ratios of the truncated triangular shapes are selected to optimize structural performance so that differences between maximum stress-depth and buckling-depth curves are minimized. Transition sections are conoidal in shape or are formed by portions having alternating flat triangular faces with curved triangular faces. Buckling strength and material stress are reduced or increased by using transition sections which are longer or shorter than the polyhedral faces in the shell body.
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patent: 3598275 (1971-08-01), Francois
patent: 3608767 (1971-09-01), Elliott et al.
patent: 3760753 (1973-09-01), Mertens
patent: 4058945 (1977-11-01), Knapp
patent: 4825602 (1989-05-01), Yacoe
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patent: 5100017 (1992-03-01), Ishinabe
patent: 5249997 (1993-10-01), Nance
Ronald H. Knapp, "Pseudo-Cylindrical Sells: A New Concept for Undersea Structures", Journal of Engineering for Industry, vol. 99, No. 2, Mat 1977 .
Basinger Sherman
Creighton Wray James
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