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Structural and Multidisciplinary Optimization
Erschienen in: Structural and Multidisciplinary Optimization 4/2017

21.04.2017 | RESEARCH PAPER

Topology optimization for coupled acoustic-structural systems under random excitation

verfasst von: Linyuan Shang, Guozhong Zhao, Jingjuan Zhai

Erschienen in: Structural and Multidisciplinary Optimization | Ausgabe 4/2017

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Abstract

Topology optimization for coupled acoustic-structural systems subjected to stationary random excitations is investigated. Bi-material elastic continuum structures without damping are considered. The finite element method is utilized to deal with coupled acoustic-structural problems. An accurate and highly efficient algorithm series for stationary random analysis techniques, pseudo excitation method, is extended to calculate the acoustic random response generated by the vibrating structures. Minimization of the auto power spectral density of sound pressure is taken as design objective and its sensitivities with respect to topological variables are derived by adjoint method. A penalty term is proposed to suppress the intermediate volumetric densities. Numerical examples are given to demonstrate the validity of the presented methods.
Vorheriger Artikel Robust topology optimization of frame structures under geometric or material properties uncertainties
Nächster Artikel Design of thermoelastic multi-material structures with graded interfaces using topology optimization

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Metadaten
Titel
Topology optimization for coupled acoustic-structural systems under random excitation
verfasst von
Linyuan Shang
Guozhong Zhao
Jingjuan Zhai
Publikationsdatum
21.04.2017
Verlag
Springer Berlin Heidelberg
Erschienen in
Structural and Multidisciplinary Optimization / Ausgabe 4/2017
Print ISSN: 1615-147X
Elektronische ISSN: 1615-1488
DOI
https://doi.org/10.1007/s00158-017-1687-3

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