Author(s)

H. Martikka

Abstract

Optimum design of industrial vessels for prescribed loads to obtain customer satisfying material selections and dimensions H. Martikka Faculty of Construction Design, Department of Mechanical Engineering Lappeenranta University of Technology, Finland Abstract The main purpose of this study is to present results of a cost -effective optimisation and material selection methodology as applied to cylindrial pressure vessels. The loads are pressure range, temperature and chemical loads. Six common material types are included: corrosion resistant alloy and high strength steel, stainless steel, aluminium, glass fiber reinforced plastic and high strength cast iron. Both the goals and the constraints are formulated in the same fuzzy way and not in a conventional way of using equation constraints and penalty functions. The total goal is to maximize the satisfaction of the customer on the cost of the vessel material, the buckling strength, fatigue crack growth life, environmental end

Keywords