Topology Optimization of Vibrating Bi-Material Structures with Respect to Sound Radiation

2006 ◽  
pp. 43-52 ◽  
Author(s):  
Niels Olhoff ◽  
Jianbin Du
Keyword(s):  
Topology Optimization ◽  
Sound Radiation

Topology Optimization of Applied Damping Material for Noise Control

2012 ◽  
Vol 629 ◽  
pp. 530-535
Author(s):  
Wei Guang Zheng ◽  
Ying Feng Lei ◽  
Qi Bai Huang ◽  
Chuan Bing Li
Keyword(s):  
Finite Element ◽  
Topology Optimization ◽  
Isotropic Material ◽  
Optimization Design ◽  
Sound Radiation ◽  
Design Tool ◽  
Viscoelastic Layer ◽  
Frequency Range ◽  
Damping Material ◽  
Broadband Frequency

Applied damping material (ADM) is today widely used to reduce vibrations and sound radiations by damping out the resonant peaks of structures. The efficient use of ADM becomes more and more important from an optimization design view. In this paper, the potential of using topology optimization as a design tool to optimize the distribution of ADM on a vibrating plate to minimize its sound radiation is investigated. A solid isotropic material with penalization model is described based on a special interface finite element modeling for viscoelastic layer. Numerical analysis has been applied to demonstrate the validation of the proposed approach and shows that significant reductions of the sound radiation powers over a broadband frequency range are achieved by the optimized results.

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