Parameters of Nonlinearity of Acoustic Media

2007 ◽  
pp. 219-226 ◽  
Author(s):  
E. Carr Everbach
Keyword(s):  
Acoustic Media

Tunable nonlocal purely active nonreciprocal acoustic media

2021 ◽  
Vol 103 (16) ◽  
Author(s):  
Nathan Geib ◽  
Aritra Sasmal ◽  
Zhuzhu Wang ◽  
Yuxin Zhai ◽  
Bogdan-Ioan Popa ◽  
...  
Keyword(s):  
Acoustic Media

Shape Sensitivity Analysis Applied to Exterior Acoustics

2001 ◽  
Author(s):  
Gonzalo R. Feijóo ◽  
Assad A. Oberai ◽  
Peter M. Pinsky
Keyword(s):  
Optimization Problems ◽  
Auxiliary Problem ◽  
Adjoint Problem ◽  
The Body ◽  
Structural Acoustics ◽  
Shape Sensitivity ◽  
Shape Sensitivity Analysis ◽  
Primal Problem ◽  
Acoustic Media ◽  
The Cost

Abstract We present a method to calculate the derivative of a functional that depends on the shape of a body immersed in an acoustic media. The functional depends implicitly on the shape through the solution of an exterior acoustic problem. The derivative is calculated in terms of the solution of the primal problem and an auxiliary problem, the adjoint problem. An important aspect of this method is that the cost of calculating the derivative is independent of the number of parameters used to represent the shape of the body. This allows for efficient solution of optimization problems in structural acoustics.

Unit cell interactions of non-local active acoustic media

2021 ◽  
Vol 149 (4) ◽  
pp. A80-A80
Author(s):  
Nathan Geib ◽  
Bogdan-Ioan Popa ◽  
Karl Grosh
Keyword(s):  
Unit Cell ◽  
Cell Interactions ◽  
Acoustic Media ◽  
Non Local
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