Authors:
- Nominated as an outstanding PhD thesis by University of South Australia, Adelaide, Australia
- Introduces novel topologies of phononic crystals with record breaking bandgap width and deformation induced tunability
- Discusses different approaches for optimization of porous phononic crystals
- Describes optimization of both bi-material 1D and porous 2D periodic design
Part of the book series: Springer Theses (Springer Theses)
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Table of contents (9 chapters)
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Front Matter
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Back Matter
About this book
This thesis proposes novel designs of phononic crystal plates (PhPs) allowing ultra-wide controllability frequency ranges of guided waves at low frequencies, with promising structural and tunability characteristics. It reports on topology optimization of bi-material-layered (1D) PhPs allowing maximized relative bandgap width (RBW) at target filling fractions and demonstrates multiscale functionality of gradient PhPs. It also introduces a multi-objective topology optimization method for 2D porous PhPs allowing both maximized RBW and in-plane stiffness and addresses the critical role of considering stiffness in designing porous PhPs. The multi-objective topology optimization method is then expanded for designing 2D porous PhPs with deformation induced tunability. A variety of innovative designs are introduced which their maximized broadband RBW is enhanced by, is degraded by or is insensitive to external finite deformation. Not only does this book address the challenges of new topology optimization methods for computational design of phononic crystals; yet, it demonstrated the suitability and applicability of the topological designs by experimental validation. Furthermore, it offers a comprehensive review of the existing optimization-based approaches for the design of finite non-periodic acoustic metamaterial structures, acoustic metamaterial lattice structures and acoustic metamaterials under perfect periodicity.
Keywords
- Topology Optimization
- Acoustic Metamaterials (AMMs)
- Acoustic Bandgap
- Tunable Phononic Bandgap Plates
- Propagation of Vibroacoustic Waves
- Flexural Guided Waves
- Guided Waves in 2D PhPs
- Topology Optimisation of PhCr Plates
- Tunable Phononic Bandgap Plates
- In-plane Stiffness
- Optimization of Porous Plate Structures
- 1D Bi-material PhPs
- Maximising Bandgap Tunability
Authors and Affiliations
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School of Engineering, University of South Australia, Adelaide, Australia
Saeid Hedayatrasa
Bibliographic Information
Book Title: Design Optimisation and Validation of Phononic Crystal Plates for Manipulation of Elastodynamic Guided Waves
Authors: Saeid Hedayatrasa
Series Title: Springer Theses
DOI: https://doi.org/10.1007/978-3-319-72959-6
Publisher: Springer Cham
eBook Packages: Engineering, Engineering (R0)
Copyright Information: Springer International Publishing AG 2018
Hardcover ISBN: 978-3-319-72958-9Published: 18 January 2018
Softcover ISBN: 978-3-319-89225-2Published: 07 June 2019
eBook ISBN: 978-3-319-72959-6Published: 09 January 2018
Series ISSN: 2190-5053
Series E-ISSN: 2190-5061
Edition Number: 1
Number of Pages: XX, 223
Number of Illustrations: 117 b/w illustrations, 21 illustrations in colour
Topics: Vibration, Dynamical Systems, Control, Characterization and Evaluation of Materials, Engineering Design