Abstract
This study shows single and multi-objective optimization of a new complex structural model [laminated carbon fiber reinforced plastic (CFRP) deck plates with aluminium (Al) stiffeners] which is depicted in Figure 1. The structure was designed for both minimal cost and minimal weight. Design constraints on maximum deflection of the total structure, buckling of the composite plates, buckling of the Al webs, stress in the composite plates, stress in the Al stiffeners and eigenfrequency of the structure are considered in the calculation. The flexible tolerance method was used in the single objective optimization and particle swarm algorithm in the multiobjective optimization process.
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