On the use of thin structures to control the far-field properties of an acoustic device
2016 (English)Report (Other academic)
This work presents a sensitivity analysis for topology optimization of thin structures inside an acoustic horn in order to improve its far-field directivity properties. The objective function gradient is computed using an adjoint-based method, a well-known approach in the design optimization community due to its ability to compute the design sensitivities when there is a large number of design variables. The accuracy of the computed gradient is verified numerically against a first order finite difference approximation. The report also covers the matrix representations of the far-field pattern evaluation and the variational problem with an interface condition to model the thin structures.
Place, publisher, year, edition, pages
Umeå: Department of Computing Science, Umeå University , 2016. , 19 p.
Report / UMINF, ISSN 0348-0542 ; 16.12
IdentifiersURN: urn:nbn:se:umu:diva-119975OAI: oai:DiVA.org:umu-119975DiVA: diva2:925981