scholarly journals Topology optimization of periodic microstructures for enhanced loss factor using acoustic–structure interaction

2017 ◽  
Vol 122-123 ◽  
pp. 59-68 ◽  
Author(s):  
Junghwan Kook ◽  
Jakob S. Jensen
Keyword(s):  
Topology Optimization ◽  
Loss Factor ◽  
Acoustic Structure ◽  
Structure Interaction ◽  
Periodic Microstructures

Analysis of Acoustic-Structure Interaction Using a High-Order Doubly Asymptotic Approximation

2016 ◽  
Vol 24 (01) ◽  
pp. 1550021 ◽  
Author(s):  
Heekyu Woo ◽  
Young S. Shin
Keyword(s):  
Order Approximation ◽  
Stable Model ◽  
Approximation Model ◽  
Third Order ◽  
Acoustic Structure ◽  
Structure Interaction ◽  
Proposed Model ◽  
The Stability ◽  
Third Order Approximation ◽  
Interaction Problem

In this paper, a new third-order approximation model for an acoustic-structure interaction problem is introduced. The new approximation model is designed to be an accurate and a stable model for predicting the response of a submerged structure. The proposed model is obtained by combining two lower order approximation models instead of using an operator matching method. The stability of this model is checked by a modal analysis. Finally, the approximation model is coupled to the spherical shell structure, and its performance is checked by a shock analysis.

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