Optimization of directional elastic energy propagation

Erik Andreassen; Hannah R. Chang; Massimo Ruzzene; Jakob Søndergaard Jensen

doi:10.1016/j.jsv.2016.03.002

Optimization of directional elastic energy propagation

Erik Andreassen, Hannah R. Chang, Massimo Ruzzene, Jakob Søndergaard Jensen

Georgia Institute of Technology

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Abstract

The aim of this paper is to demonstrate how topology optimization can be used to design a periodically perforated plate, in order to obtain a tailored anisotropic group velocity profile. The main method is demonstrated on both low and high frequency bending wave propagation in an aluminum plate, but is general in the sense that it could be used to design periodic structures with frequency dependent group velocity profiles for any kind of elastic wave propagation. With the proposed method the resulting design is manufacturable. Measurements on an optimized design compare excellently with the numerical results. (C) 2016 Elsevier Ltd. All rights reserved.

Original language	English
Journal	Journal of Sound and Vibration
Volume	379
Pages (from-to)	53-70
ISSN	0022-460X
DOIs	https://doi.org/10.1016/j.jsv.2016.03.002
Publication status	Published - 2016

Keywords

Wave propagation
Perforated plate
Microstructure
Topology optimization
Phononic crystal
Group velocity

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title = "Optimization of directional elastic energy propagation",

abstract = "The aim of this paper is to demonstrate how topology optimization can be used to design a periodically perforated plate, in order to obtain a tailored anisotropic group velocity profile. The main method is demonstrated on both low and high frequency bending wave propagation in an aluminum plate, but is general in the sense that it could be used to design periodic structures with frequency dependent group velocity profiles for any kind of elastic wave propagation. With the proposed method the resulting design is manufacturable. Measurements on an optimized design compare excellently with the numerical results. (C) 2016 Elsevier Ltd. All rights reserved.",

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T1 - Optimization of directional elastic energy propagation

AU - Andreassen, Erik

AU - Chang, Hannah R.

AU - Ruzzene, Massimo

AU - Jensen, Jakob Søndergaard

PY - 2016

Y1 - 2016

N2 - The aim of this paper is to demonstrate how topology optimization can be used to design a periodically perforated plate, in order to obtain a tailored anisotropic group velocity profile. The main method is demonstrated on both low and high frequency bending wave propagation in an aluminum plate, but is general in the sense that it could be used to design periodic structures with frequency dependent group velocity profiles for any kind of elastic wave propagation. With the proposed method the resulting design is manufacturable. Measurements on an optimized design compare excellently with the numerical results. (C) 2016 Elsevier Ltd. All rights reserved.

AB - The aim of this paper is to demonstrate how topology optimization can be used to design a periodically perforated plate, in order to obtain a tailored anisotropic group velocity profile. The main method is demonstrated on both low and high frequency bending wave propagation in an aluminum plate, but is general in the sense that it could be used to design periodic structures with frequency dependent group velocity profiles for any kind of elastic wave propagation. With the proposed method the resulting design is manufacturable. Measurements on an optimized design compare excellently with the numerical results. (C) 2016 Elsevier Ltd. All rights reserved.

KW - Wave propagation

KW - Perforated plate

KW - Microstructure

KW - Topology optimization

KW - Phononic crystal

KW - Group velocity

U2 - 10.1016/j.jsv.2016.03.002

DO - 10.1016/j.jsv.2016.03.002

M3 - Journal article

SN - 0022-460X

VL - 379

SP - 53

EP - 70

JO - Journal of Sound and Vibration

JF - Journal of Sound and Vibration

ER -

Optimization of directional elastic energy propagation

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