Design and Additive Manufacturing of 3D Phononic Band Gap Structures Based on Gradient Based Optimization

Beitrag in einer Fachzeitschrift


Details zur Publikation

Autor(en): Wormser M, Wein F, Stingl M, Körner C
Zeitschrift: Materials
Jahr der Veröffentlichung: 2017
Band: 10
Heftnummer: 10
ISSN: 1996-1944
Sprache: Englisch


Abstract


We present a novel approach for gradient based maximization of phononic band gaps. The approach is a geometry projection method combining parametric shape optimization with density based topology optimization. By this approach, we obtain, in a two dimension setting, cellular structures exhibiting relative and normalized band gaps of more than 8 and 1.6, respectively. The controlling parameter is the minimal strut size, which also corresponds with the obtained stiffness of the structure. The resulting design principle is manually interpreted into a three dimensional structure from which cellular metal samples are fabricated by selective electron beam melting. Frequency response diagrams experimentally verify the numerically determined phononic band gaps of the structures. The resulting structures have band gaps down to the audible frequency range, qualifying the structures for an application in noise isolation.



FAU-Autoren / FAU-Herausgeber

Körner, Carolin Prof. Dr.-Ing.
Lehrstuhl für Werkstoffwissenschaften (Werkstoffkunde und Technologie der Metalle)
Stingl, Michael Prof. Dr.
Professur für Mathematische Optimierung
Wein, Fabian Dr.
Lehrstuhl für Angewandte Mathematik
Wormser, Maximilian
Lehrstuhl für Werkstoffwissenschaften (Werkstoffkunde und Technologie der Metalle)


Zitierweisen

APA:
Wormser, M., Wein, F., Stingl, M., & Körner, C. (2017). Design and Additive Manufacturing of 3D Phononic Band Gap Structures Based on Gradient Based Optimization. Materials, 10(10). https://dx.doi.org/10.3390/ma10101125

MLA:
Wormser, Maximilian, et al. "Design and Additive Manufacturing of 3D Phononic Band Gap Structures Based on Gradient Based Optimization." Materials 10.10 (2017).

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Zuletzt aktualisiert 2018-17-10 um 22:41