Shape and topology optimization of an acoustic horn-lens combination

JOURNAL OF COMPUTATIONAL AND APPLIED MATHEMATICS

卷:234

Article; Proceedings Paper

Wadbro, Eddie^1,2  Udawalpola, Rajitha²  Berggren, Martin¹ 

[1] Umea Univ, Dept Comp Sci, SE-90187 Umea, Sweden

[2] Uppsala Univ, Dept Informat Technol, Div Comp Sci, SE-75105 Uppsala, Sweden

关键词: Design optimization;    Helmholtz equation;    Acoustic horn;    Acoustic lens;   

DOI  :  10.1016/j.cam.2009.08.028

来源: Elsevier

【 摘 要 】

Using gradient-based optimization combined with numerical solutions of the Helmholtz equation, we design an acoustic device with high transmission efficiency and even directivity throughout a two-octave-wide frequency range. The device consists of a horn, whose flare is subject to boundary shape optimization, together with an area in front of the horn, where solid material arbitrarily can be distributed using topology optimization techniques, effectively creating an acoustic lens. (C) 2009 Elsevier B.V. All rights reserved.

【 授权许可】

Free