Topology optimization of damping material layout in coupled vibro-acoustic system using hybrid finite element-wave based method

2021 ◽  
Author(s):  
Bi Wu ◽  
Weichun Fan ◽  
Zhongming Xu ◽  
Zhifei Zhang ◽  
Guanghu Jin
Keyword(s):  
Finite Element ◽  
Topology Optimization ◽  
Acoustic System ◽  
Hybrid Finite Element ◽  
Damping Material ◽  
Material Layout

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.

Parallel Topology Optimization of Bi-Material Layout for Vibration Control in Plate Structures

2012 ◽  
Vol 538-541 ◽  
pp. 2586-2593
Author(s):  
Xiao Guang Xue ◽  
Guo Xi Li ◽  
Jing Zhong Gong ◽  
Bao Zhong Wu
Keyword(s):  
Finite Element ◽  
Topology Optimization ◽  
Vibration Control ◽  
Parallel Implementation ◽  
Flow Analysis ◽  
Element Model ◽  
Discussion Section ◽  
Structural Dynamic ◽  
Topology Optimization Problem ◽  
Material Layout

This paper presents a parallel implementation process for the structural dynamic topology optimization problem. An energy flow analysis based topology optimization model is established for the objective of vibration control. The structural vibrations are excited by time-harmonic external mechanical loading with prescribed frequency and amplitude. Design variables are parameterized using Bi-material Solid Isotropic Material with Penalization (SIMP) models and Method of Moving Asymptotes (MMA) is applied for variable updating. A Parallel Finite Element (PFE) model is constructed by re-group the original finite element model. Each PFE will be computed by different processor, and then assembles together to get the global response. The efficiency and stability can be improved, which has been illustrated in the results discussion section in the end of the paper.

Topology optimization of bounded acoustic problems using the hybrid finite element-wave based method

2017 ◽  
Vol 313 ◽  
pp. 834-856 ◽  
Author(s):  
Seongyeol Goo ◽  
Semyung Wang ◽  
Junghwan Kook ◽  
Kunmo Koo ◽  
Jaeyub Hyun
Keyword(s):  
Finite Element ◽  
Topology Optimization ◽  
Hybrid Finite Element

scholarly journals A Comprehensive Review of Isogeometric Topology Optimization: Methods, Applications and Prospects

2020 ◽  
Vol 33 (1) ◽  
Author(s):  
Jie Gao ◽  
Mi Xiao ◽  
Yan Zhang ◽  
Liang Gao
Keyword(s):  
Topology Optimization ◽  
Computer Aided Design ◽  
Numerical Technique ◽  
Optimization Methods ◽  
Negative Influence ◽  
Comprehensive Overview ◽  
Promising Alternative ◽  
Computer Aided ◽  
Optimal Material ◽  
Material Layout

AbstractTopology Optimization (TO) is a powerful numerical technique to determine the optimal material layout in a design domain, which has accepted considerable developments in recent years. The classic Finite Element Method (FEM) is applied to compute the unknown structural responses in TO. However, several numerical deficiencies of the FEM significantly influence the effectiveness and efficiency of TO. In order to eliminate the negative influence of the FEM on TO, IsoGeometric Analysis (IGA) has become a promising alternative due to its unique feature that the Computer-Aided Design (CAD) model and Computer-Aided Engineering (CAE) model can be unified into a same mathematical model. In the paper, the main intention is to provide a comprehensive overview for the developments of Isogeometric Topology Optimization (ITO) in methods and applications. Finally, some prospects for the developments of ITO in the future are also presented.

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