Pareto optimal design of layered bandgap materials with multiphase microstructures using evolutionary algorithms |
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| Authors: | Wei-Kai Xu Wei Wang |
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| Affiliation: | 1. Key Laboratory of Liaoning Province for Composite Structural Analysis of Aerocraft and Simulation, Shenyang Aerospace University, Shenyang 110136, PR China;2. School of Civil Engineering, Shenyang Jianzhu University, Shenyang 110168, PR China |
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| Abstract: | An important characteristic of the periodic materials or structures is the existence of bandgap. This bandgap, which is dispersion-related, can be designed by controlling the materials layout within the periodic microstructures. In this paper, the topologies of periodic multiphase microstructures are optimized using a multiobjective genetic algorithm and two cases of studies are presented. The results show that 3-phase material can obtain quite better designs on the basis of fewer layers. This will be a reference for the design of phononic bandgap materials. |
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| Keywords: | Bandgap materials Multiphase microstructures Pareto optimal design Topology optimization Unit cell |
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