Leilei Chen
Xinyang Normal University
Mathematical optimizationTopologyMathematical analysisFast multipole methodFinite element methodBoundary value problemTopology optimizationSubdivision surfaceSensitivity (control systems)AcousticsSolverIsogeometric analysisApplied mathematicsShape optimizationMathematicsComputer scienceMultipole expansionBasis functionBoundary (topology)Boundary element methodDiscretizationSingular integral
29Publications
11H-index
263Citations
Publications 28
Newest
#1Yanming XuH-Index: 1
#2Wenchang ZhaoH-Index: 6
Last. Haibo ChenH-Index: 17
view all 4 authors...
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#1Fuhang Jiang (USTC: University of Science and Technology of China)
#2Wenchang Zhao (USTC: University of Science and Technology of China)H-Index: 6
Last. Haibo Chen (USTC: University of Science and Technology of China)H-Index: 17
view all 5 authors...
Abstract This study presents a combined shape and topology optimization method for designing sound barriers by using the isogeometric boundary element method. The objective function of combined optimization is defined as the sound pressure in reference plane. The sensitivity analysis for the combined optimization is conducted by using either the direct differentiation method or the adjoint variable method. For a shape design, the design variables are the positions of control points in isogeometr...
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#1Haifeng Gao (TUT: Taiyuan University of Technology)H-Index: 1
#1Haifeng Gao (TUT: Taiyuan University of Technology)H-Index: 1
Last. Toshiro Matsumoto (Nagoya University)H-Index: 22
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Abstract In this paper, a computational methodology for the band structure analysis of 2D acoustic phononic structures based on the isogeometric boundary element method(IGABEM) is studied. IGABEM not only improves the accuracy of numerical model, but also retains the geometric accuracy and makes the pre-processing procedure relatively simpler for models designed through using computer-aided design(CAD) softwares. B-splines, which are widely employed in computer graphics and CAD industry, are use...
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#1Leilei Chen (Xinyang Normal University)H-Index: 11
#2Y. Zhang (Xinyang Normal University)H-Index: 1
Last. Stéphane Bordas (Cardiff University)H-Index: 65
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Abstract Isogeometric boundary element method is a computer simulation algorithm that can directly utilize the data of a geometric model represented by its surface. Catmull-Clark subdivision surfaces are a widely used technique in 3D computer graphics to construct complicated geometries. In the present work, we combine Catmull-Clark subdivision surfaces with isogeometric boundary element method to simulate acoustic propagation in semi-infinite domains. The present method can produce fast and hig...
4 CitationsSource
#1Leilei Chen (Xinyang Normal University)H-Index: 11
#2Chuang Lu (USTC: University of Science and Technology of China)H-Index: 1
Last. Changjun Zheng (Hefei University of Technology)H-Index: 15
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A novel boundary element method based on subdivision surfaces is applied to simulate wave scattering problems governed by the Helmholtz equation. The Loop subdivision scheme widely used in the CAD ...
1 CitationsSource
#1Jie WangH-Index: 1
#2Changjun Zheng (Hefei University of Technology)H-Index: 15
Last. Haibo Chen (USTC: University of Science and Technology of China)H-Index: 17
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A shape optimization approach based on isogeometric wideband fast multipole boundary element method (IGA WFMBEM) in 2D acoustics is developed in this study. The key treatment is shape sensitivity a...
1 CitationsSource
#1Leilei Chen (Xinyang Normal University)H-Index: 11
#2Chuang Lu (USTC: University of Science and Technology of China)H-Index: 1
Last. Stéphane Bordas (Cardiff University)H-Index: 65
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Abstract This paper presents an acoustic topology optimization approach using isogeometric boundary element methods based on subdivision surfaces to optimize the distribution of sound adsorption materials adhering to structural surfaces. The geometries are constructed from triangular control meshes through Loop subdivision scheme, and the associated Box-spline functions that generate limit smooth subdivision surfaces are employed to discretize the acoustic boundary integral equations. The effect...
18 CitationsSource
#1Wenchang Zhao (TUM: Technische Universität München)H-Index: 2
#2Leilei Chen (Xinyang Normal University)H-Index: 11
Last. Steffen Marburg (TUM: Technische Universität München)H-Index: 32
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This research contributes to the topology optimization of acoustic–structure interaction problems with infinite acoustic domain by focusing on two issues, namely, the variation of the acoustic–structure interface and free-floating elements. To handle the variation of the coupling interface, we divide the analyzed domain into the bounded and unbounded domains by using a virtual surface. For the bounded domain where the coupling interface may appear, we model it with the mixed displacement–pressur...
Source
#1Yanming Xu (USTC: University of Science and Technology of China)H-Index: 1
#2Wenchang Zhao (USTC: University of Science and Technology of China)H-Index: 6
Last. Haibo Chen (USTC: University of Science and Technology of China)H-Index: 17
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In this work, we develop an optimization approach to optimize the distribution of porous material layer inside cavity. The optimization seeks to improve the absorbing effects of the porous material, decreasing the noise level at regions of interest or increasing the sound energy dissipated by the porous material. To achieve the preset optimization aim, two different objective functions are accordingly defined. The acoustic absorption characteristics of porous materials are numerically described ...
1 CitationsSource
#1Leilei Chen (Xinyang Normal University)H-Index: 11
#2Haojie Lian (University of Luxembourg)H-Index: 13
Last. Stéphane Bordas (Cardiff University)H-Index: 65
view all 6 authors...
Abstract The boundary element method (BEM) is a powerful tool in computational acoustics, because the analysis is conducted only on structural surfaces, compared to the finite element method (FEM) which resorts to special techniques to truncate infinite domains. The isogeometric boundary element method (IGABEM) is a recent progress in the category of boundary element approaches, which is inspired by the concept of isogeometric analysis (IGA) and employs the spline functions of CAD as basis funct...
40 CitationsSource