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Comparative Study of Metallic and Non-metallic Stiffened Plates in Marine Structures  

Jeong, Han-Koo (군산대학교 조선공학과)
Publication Information
Journal of the Computational Structural Engineering Institute of Korea / v.23, no.6, 2010 , pp. 715-726 More about this Journal
Abstract
In this paper, a comparative study of metallic and non-metallic stiffened plates under a lateral pressure load is performed using conventional statistically determinate and SQP(Sequential Quadratic Programming) optimisation approaches. Initially, a metallic flat-bar stiffened plate is exemplified from the superstructure of a marine vessel and, subsequently, its structural topology is varied as hat-section stiffened FRP(Fibre Reinforced Plastics) single skin plates and monocoque FRP sandwich plates having a PVC foam core. These proposed structural alternatives are analysed using elastic closed-form solutions and SQP optimisation method under stress and deflection limits obtained from practice to calculate and optimise geometry dimensions and weights. Results obtained from the comparative study provide useful information for marine designers especially at the preliminary design stage where various building materials and structural configurations are dealt with.
Keywords
flat-bar stiffened metallic plate; hat-section stiffened FRP plate; Monocoque FRP sandwich plate; statically determinate solution; SQP optimisation solution;
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