Optimal design for acoustic unobservability in water : vimar

Optimal design for acoustic unobservability in water


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VIDEO: Square norm of sound pressure in water around a designed acoustic cloak during topology optimization.
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Credit: GARUDA FUJII, INSTITUTE OF ENGINEERING, SHINSHU UNIVERSITY, JAPAN
Until now, it was only possible to optimize an acoustic cloaking structure for the air-environment. However, with this latest research, Acoustic cloak designed by topology optimization for acoustic-elastic coupled systems, published in the latest
Applied Physics Letters, it is possible to design an acoustic cloak for underwater environments.
In the conventional topology optimization of acoustic cloaking, the design method was based on an analysis that approximated an elastic body in the air as a rigid body. However, since the approximation holds only for materials that are sufficiently stiff and dense such as metal in the air, there were few material options other than metal. Moreover, it was impossible to design an acoustic cloak in water by the approximation method.

Related Keywords

Garuda Fujii , Shinshu University , Applied Physics Letters , Associate Professor Garuda Fujii , Acoustics , Algorithms Models , Systems Chaos Pattern Formation Complexity , Technology Engineering Computer Science , Computer Science , கருத புஜி , ஷீன்ஷு பல்கலைக்கழகம் , பயன்படுத்தப்பட்டது இயற்பியல் எழுத்துக்கள் , இணை ப்ரொஃபெஸர் கருத புஜி , ஒலியியல் , அமைப்புகள் குழப்பம் முறை உருவாக்கம் சிக்கலானது , தொழில்நுட்பம் பொறியியல் கணினி அறிவியல் , கணினி அறிவியல் ,

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