Accession Number : AD0428856


Title :   DESIGN METHOD FOR DOUBLE-WALLED EXTERNAL PRESSURE VESSELS,


Corporate Author : NAVAL ORDNANCE LAB WHITE OAK MD


Personal Author(s) : Churchill,M V


Report Date : 01 Oct 1963


Pagination or Media Count : 1


Abstract : By pursuing the analogy which exists between the reinforced pressure vessel and the beam on an elastic foundation, and by systematic application of the principle of balanced design, a set of equations is derived by which optimum values for wall thickness. Reinforcement size and spacing can be calculated directly from the shell radius, the design pressure, and the mechanical properties of the material. The element of trial and error is virtually eliminated ane the use of iterative methods is restricted to a few cases in which convergence is quite rapid. The effect of rigid end bulkheads is discussed and a means of minimizing secondary stresses from that source is proposed. A sample calculation is given and a comparison made with designs produced by other methods. (Author)


Descriptors :   *PRESSURE VESSELS , *SHELLS(STRUCTURAL FORMS) , EQUATIONS , UNDERWATER ORDNANCE , ASPECT RATIO , STABILITY , ELASTIC PROPERTIES , OPTIMIZATION , LOADS(FORCES) , ELASTIC SHELLS , BEAMS(STRUCTURAL)


Distribution Statement : APPROVED FOR PUBLIC RELEASE