Author(s)

H. Martikka

Abstract

A large industrial composite vessel is designed optimally. Its shell is made of glass fiber reinforced plastic stiffened with steel beams. The goal is to maximize customer satisfaction on the cost and stress level of the beams and shells. The goal is formulated in a fuzzy way using combinations of individual satisfaction functions. FE method is used to check the stress levels of the analytical models. Micromechanical models are used to simulate tensile test behaviour of fiber reinforced materials. Introduction The aim of this work was to design optimally a large GRP composite vessel structure using customer satisfaction goal and relevant technical and economical constraints. The manufacturer wants to satisfy the needs of the end

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