A simple method for coupled acoustic-mechanical analysis with application to gradient-based topology optimization

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A simple method for coupled acoustic-mechanical analysis with application to gradient-based topology optimization. / Jensen, Jakob S.

In: Structural and Multidisciplinary Optimization, Vol. 59, No. 5, 2019, p. 1567–1580.

Research output: Contribution to journalJournal article – Annual report year: 2019Researchpeer-review

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@article{fd666e4715eb414ebbbf76491ed4a776,
title = "A simple method for coupled acoustic-mechanical analysis with application to gradient-based topology optimization",
abstract = "A simple computational framework for analysis of acoustic-mechanical coupling is proposed. The method is based one xtended finite element models for structural vibrations and acoustic pressure fluctuations using artificial mechanical and acoustic parameters in the non-structural and non-acoustic domains, respectively. The acoustic-mechanical interaction is created using a self-coupling matrix assembled in the entire computational domain, effectively generating coupling at acoustic-mechanical interface boundaries. The simple analysis tool circumvents the need for explicit interface tracking with accuracy controlled explicitly using a contrast parameter between the physical and artificial material parameters. Furthermore, the method’s direct applicability to gradient-based topology optimization, where elements can turn from mechanical to acoustic and vice versa, is demonstrated and illustrated using a simple example.",
keywords = "Acoustic-mechanical coupling, Extended models, Topology optimization",
author = "Jensen, {Jakob S.}",
year = "2019",
doi = "10.1007/s00158-018-2147-4",
language = "English",
volume = "59",
pages = "1567–1580",
journal = "Structural and Multidisciplinary Optimization",
issn = "1615-147X",
publisher = "Springer",
number = "5",

}

RIS

TY - JOUR

T1 - A simple method for coupled acoustic-mechanical analysis with application to gradient-based topology optimization

AU - Jensen, Jakob S.

PY - 2019

Y1 - 2019

N2 - A simple computational framework for analysis of acoustic-mechanical coupling is proposed. The method is based one xtended finite element models for structural vibrations and acoustic pressure fluctuations using artificial mechanical and acoustic parameters in the non-structural and non-acoustic domains, respectively. The acoustic-mechanical interaction is created using a self-coupling matrix assembled in the entire computational domain, effectively generating coupling at acoustic-mechanical interface boundaries. The simple analysis tool circumvents the need for explicit interface tracking with accuracy controlled explicitly using a contrast parameter between the physical and artificial material parameters. Furthermore, the method’s direct applicability to gradient-based topology optimization, where elements can turn from mechanical to acoustic and vice versa, is demonstrated and illustrated using a simple example.

AB - A simple computational framework for analysis of acoustic-mechanical coupling is proposed. The method is based one xtended finite element models for structural vibrations and acoustic pressure fluctuations using artificial mechanical and acoustic parameters in the non-structural and non-acoustic domains, respectively. The acoustic-mechanical interaction is created using a self-coupling matrix assembled in the entire computational domain, effectively generating coupling at acoustic-mechanical interface boundaries. The simple analysis tool circumvents the need for explicit interface tracking with accuracy controlled explicitly using a contrast parameter between the physical and artificial material parameters. Furthermore, the method’s direct applicability to gradient-based topology optimization, where elements can turn from mechanical to acoustic and vice versa, is demonstrated and illustrated using a simple example.

KW - Acoustic-mechanical coupling

KW - Extended models

KW - Topology optimization

U2 - 10.1007/s00158-018-2147-4

DO - 10.1007/s00158-018-2147-4

M3 - Journal article

VL - 59

SP - 1567

EP - 1580

JO - Structural and Multidisciplinary Optimization

JF - Structural and Multidisciplinary Optimization

SN - 1615-147X

IS - 5

ER -