Topology optimization of two-dimensional asymmetrical phononic crystals

Hao Wen Dong; Xiao Xing Su; Yue Sheng Wang; Chuanzeng Zhang

doi:10.1016/j.physleta.2013.12.003

Topology optimization of two-dimensional asymmetrical phononic crystals

Hao Wen Dong, Xiao Xing Su, Yue Sheng Wang^*, Chuanzeng Zhang

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

79 Citations (Scopus)

Abstract

The multiple elitist genetic algorithm with the adaptive fuzzy fitness granulation (AFFG) is used to design the phononic crystals with large relative bandgap width (BGW) for combined out-of-plane and in-plane wave modes. Without assumption on the symmetry of the unit-cell, we obtain an asymmetrical phononic crystal with the relative BGW which is quite larger than that of the optimized symmetrical structure. With the help of AFFG, the number of the fitness function evaluations is reduced by over 50% and the procedure converges 5 times faster than the conventional evolutionary algorithm to reach the same final fitness values.

Original language	English
Pages (from-to)	434-441
Number of pages	8
Journal	Physics Letters, Section A: General, Atomic and Solid State Physics
Volume	378
Issue number	4
DOIs	https://doi.org/10.1016/j.physleta.2013.12.003
Publication status	Published - 17 Jan 2014
Externally published	Yes

Keywords

Asymmetrical structure
Bandgap width
Fuzzy granulation
Phononic crystal
Topology optimization

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10.1016/j.physleta.2013.12.003

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title = "Topology optimization of two-dimensional asymmetrical phononic crystals",

abstract = "The multiple elitist genetic algorithm with the adaptive fuzzy fitness granulation (AFFG) is used to design the phononic crystals with large relative bandgap width (BGW) for combined out-of-plane and in-plane wave modes. Without assumption on the symmetry of the unit-cell, we obtain an asymmetrical phononic crystal with the relative BGW which is quite larger than that of the optimized symmetrical structure. With the help of AFFG, the number of the fitness function evaluations is reduced by over 50% and the procedure converges 5 times faster than the conventional evolutionary algorithm to reach the same final fitness values.",

keywords = "Asymmetrical structure, Bandgap width, Fuzzy granulation, Phononic crystal, Topology optimization",

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year = "2014",

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T1 - Topology optimization of two-dimensional asymmetrical phononic crystals

AU - Dong, Hao Wen

AU - Su, Xiao Xing

AU - Wang, Yue Sheng

AU - Zhang, Chuanzeng

PY - 2014/1/17

Y1 - 2014/1/17

N2 - The multiple elitist genetic algorithm with the adaptive fuzzy fitness granulation (AFFG) is used to design the phononic crystals with large relative bandgap width (BGW) for combined out-of-plane and in-plane wave modes. Without assumption on the symmetry of the unit-cell, we obtain an asymmetrical phononic crystal with the relative BGW which is quite larger than that of the optimized symmetrical structure. With the help of AFFG, the number of the fitness function evaluations is reduced by over 50% and the procedure converges 5 times faster than the conventional evolutionary algorithm to reach the same final fitness values.

AB - The multiple elitist genetic algorithm with the adaptive fuzzy fitness granulation (AFFG) is used to design the phononic crystals with large relative bandgap width (BGW) for combined out-of-plane and in-plane wave modes. Without assumption on the symmetry of the unit-cell, we obtain an asymmetrical phononic crystal with the relative BGW which is quite larger than that of the optimized symmetrical structure. With the help of AFFG, the number of the fitness function evaluations is reduced by over 50% and the procedure converges 5 times faster than the conventional evolutionary algorithm to reach the same final fitness values.

KW - Asymmetrical structure

KW - Bandgap width

KW - Fuzzy granulation

KW - Phononic crystal

KW - Topology optimization

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M3 - Article

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SN - 0375-9601

VL - 378

SP - 434

EP - 441

JO - Physics Letters, Section A: General, Atomic and Solid State Physics

JF - Physics Letters, Section A: General, Atomic and Solid State Physics

IS - 4

ER -

Topology optimization of two-dimensional asymmetrical phononic crystals

Abstract

Keywords

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