Optimization and experimental validation of stiff porous phononic plates for widest complete bandgap of mixed fundamental guided wave modes
- Author
- Saeid Hedayatrasa, Mathias Kersemans (UGent) , Kazem Abhary, Mohammad Uddin and Wim Van Paepegem (UGent)
- Organization
- Abstract
- Phononic crystal plates (PhPs) have promising application in manipulation of guided waves for design of low-loss acoustic devices and built-in acoustic metamaterial lenses in plate structures. The prominent feature of phononic crystals is the existence of frequency bandgaps over which the waves are stopped, or are resonated and guided within appropriate defects. Therefore, maximized bandgaps of PhPs are desirable to enhance their phononic controllability. Porous PhPs produced through perforation of a uniform background plate, in which the porous interfaces act as strong reflectors of wave energy, are relatively easy to produce. However, the research in optimization of porous PhPs and experimental validation of achieved topologies has been very limited and particularly focused on bandgaps of flexural (asymmetric) wave modes. In this paper, porous PhPs are optimized through an efficient multiobjective genetic algorithm for widest complete bandgap of mixed fundamental guided wave modes (symmetric and asymmetric) and maximized stiffness. The Pareto front of optimization is analyzed and variation of bandgap efficiency with respect to stiffness is presented for various optimized topologies. Selected optimized topologies from the stiff and compliant regimes of Pareto front are manufactured by water-jetting an aluminum plate and their promising bandgap efficiency is experimentally observed. An optimized Pareto topology is also chosen and manufactured by laser cutting a Plexiglas (PMMA) plate, and its performance in self-collimation and focusing of guided waves is verified as compared to calculated dispersion properties.
- Keywords
- Experimental, Phononic crystal, Plate, Guided waves, Topology optimization
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Please use this url to cite or link to this publication: http://hdl.handle.net/1854/LU-8522504
- MLA
- Hedayatrasa, Saeid, et al. “Optimization and Experimental Validation of Stiff Porous Phononic Plates for Widest Complete Bandgap of Mixed Fundamental Guided Wave Modes.” MECHANICAL SYSTEMS AND SIGNAL PROCESSING, vol. 98, Elsevier, 2018, pp. 786–801, doi:10.1016/j.ymssp.2017.05.019.
- APA
- Hedayatrasa, S., Kersemans, M., Abhary, K., Uddin, M., & Van Paepegem, W. (2018). Optimization and experimental validation of stiff porous phononic plates for widest complete bandgap of mixed fundamental guided wave modes. MECHANICAL SYSTEMS AND SIGNAL PROCESSING, 98, 786–801. https://doi.org/10.1016/j.ymssp.2017.05.019
- Chicago author-date
- Hedayatrasa, Saeid, Mathias Kersemans, Kazem Abhary, Mohammad Uddin, and Wim Van Paepegem. 2018. “Optimization and Experimental Validation of Stiff Porous Phononic Plates for Widest Complete Bandgap of Mixed Fundamental Guided Wave Modes.” MECHANICAL SYSTEMS AND SIGNAL PROCESSING 98: 786–801. https://doi.org/10.1016/j.ymssp.2017.05.019.
- Chicago author-date (all authors)
- Hedayatrasa, Saeid, Mathias Kersemans, Kazem Abhary, Mohammad Uddin, and Wim Van Paepegem. 2018. “Optimization and Experimental Validation of Stiff Porous Phononic Plates for Widest Complete Bandgap of Mixed Fundamental Guided Wave Modes.” MECHANICAL SYSTEMS AND SIGNAL PROCESSING 98: 786–801. doi:10.1016/j.ymssp.2017.05.019.
- Vancouver
- 1.Hedayatrasa S, Kersemans M, Abhary K, Uddin M, Van Paepegem W. Optimization and experimental validation of stiff porous phononic plates for widest complete bandgap of mixed fundamental guided wave modes. MECHANICAL SYSTEMS AND SIGNAL PROCESSING. 2018;98:786–801.
- IEEE
- [1]S. Hedayatrasa, M. Kersemans, K. Abhary, M. Uddin, and W. Van Paepegem, “Optimization and experimental validation of stiff porous phononic plates for widest complete bandgap of mixed fundamental guided wave modes,” MECHANICAL SYSTEMS AND SIGNAL PROCESSING, vol. 98, pp. 786–801, 2018.
@article{8522504, abstract = {{Phononic crystal plates (PhPs) have promising application in manipulation of guided waves for design of low-loss acoustic devices and built-in acoustic metamaterial lenses in plate structures. The prominent feature of phononic crystals is the existence of frequency bandgaps over which the waves are stopped, or are resonated and guided within appropriate defects. Therefore, maximized bandgaps of PhPs are desirable to enhance their phononic controllability. Porous PhPs produced through perforation of a uniform background plate, in which the porous interfaces act as strong reflectors of wave energy, are relatively easy to produce. However, the research in optimization of porous PhPs and experimental validation of achieved topologies has been very limited and particularly focused on bandgaps of flexural (asymmetric) wave modes. In this paper, porous PhPs are optimized through an efficient multiobjective genetic algorithm for widest complete bandgap of mixed fundamental guided wave modes (symmetric and asymmetric) and maximized stiffness. The Pareto front of optimization is analyzed and variation of bandgap efficiency with respect to stiffness is presented for various optimized topologies. Selected optimized topologies from the stiff and compliant regimes of Pareto front are manufactured by water-jetting an aluminum plate and their promising bandgap efficiency is experimentally observed. An optimized Pareto topology is also chosen and manufactured by laser cutting a Plexiglas (PMMA) plate, and its performance in self-collimation and focusing of guided waves is verified as compared to calculated dispersion properties.}}, author = {{Hedayatrasa, Saeid and Kersemans, Mathias and Abhary, Kazem and Uddin, Mohammad and Van Paepegem, Wim}}, issn = {{0888-3270}}, journal = {{MECHANICAL SYSTEMS AND SIGNAL PROCESSING}}, keywords = {{Experimental,Phononic crystal,Plate,Guided waves,Topology optimization}}, language = {{eng}}, pages = {{786--801}}, publisher = {{Elsevier}}, title = {{Optimization and experimental validation of stiff porous phononic plates for widest complete bandgap of mixed fundamental guided wave modes}}, url = {{http://doi.org/10.1016/j.ymssp.2017.05.019}}, volume = {{98}}, year = {{2018}}, }
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