Title :
An economically rational selection of submarine hull materials
Author_Institution :
Fluid-Struct. Interactions Group, Univ. of Southampton, Southampton, UK
Abstract :
The selection of an external pressure vessel material is described. Failures in the rupture and buckle modes are discussed, as well as the problem of submarine hull hydrostatics. A spherical geometry admits simplification to allow focus on the economic problem. The economic cost function is comprised of 28 variables: the market prices of the alloy components, some material properties of the alloy, and various extrinsic data. A variant of the exhaustive search method was preferred due to the discontinuous nature of the price data. A large database of alloys is searched, preliminary results obtained for a selection of 19 AISI alloys in the 300 and 400 series, and conclusions drawn.
Keywords :
buckling; costing; fracture; hydrostatics; pressure vessels; stainless steel; underwater vehicles; AISI alloys; FeCrCJk; buckle mode; economic cost function; exhaustive search method; external pressure vessel material; rupture mode; stainless steel; submarine hull hydrostatics; submarine hull materials; Composite materials; Cost function; Databases; Geometry; Internal stresses; Manufacturing; Material properties; Search methods; Thin wall structures; Underwater vehicles;
Conference_Titel :
OCEANS 2009 - EUROPE
Conference_Location :
Bremen
Print_ISBN :
978-1-4244-2522-8
Electronic_ISBN :
978-1-4244-2523-5
DOI :
10.1109/OCEANSE.2009.5278214
