Article
Materials Science, Multidisciplinary
Tianchen Cui, Zongliang Du, Chang Liu, Zhi Sun, Xu Guo
Summary: In this article, an explicit topology optimization approach with components-growing ability is proposed under the MMC framework. The approach optimizes the shape and topology layout of structures by the growth evolution of moving morphable components. It eliminates the initial design dependency by allowing the addition of new components or modification of the current layout.
ACTA MECHANICA SOLIDA SINICA
(2022)
Article
Computer Science, Interdisciplinary Applications
Zongliang Du, Tianchen Cui, Chang Liu, Weisheng Zhang, Yilin Guo, Xu Guo
Summary: This study proposes an efficient and easy-to-extend three-dimensional topology optimization method, which improves the efficiency and performance of the optimization process by introducing new numerical techniques and optimizing the load transmission path.
STRUCTURAL AND MULTIDISCIPLINARY OPTIMIZATION
(2022)
Article
Engineering, Multidisciplinary
Shuai Zheng, Haojie Fan, Ziyu Zhang, Zhiqiang Tian, Kang Jia
Summary: This study introduces a real-time structural topology optimization method based on a convolutional neural network, replacing traditional iterative calculations with residual learning and attention mechanisms, significantly improving accuracy.
APPLIED MATHEMATICAL MODELLING
(2021)
Article
Mechanics
Wendong Huo, Chang Liu, Zongliang Du, Xudong Jiang, Zhenyu Liu, Xu Guo
Summary: This article proposes an integrated paradigm for topology optimization on complex surfaces using structural components and computational conformal mapping technique. Numerical examples demonstrate the effectiveness and efficiency of the proposed approach, which outperforms traditional methods.
JOURNAL OF APPLIED MECHANICS-TRANSACTIONS OF THE ASME
(2022)
Article
Engineering, Multidisciplinary
Rixin Wang, Xianmin Zhang, Benliang Zhu
Summary: The paper introduces a projective transformation-based topology optimization method using moving morphable components to improve manufacturability of optimal results without being affected by background mesh quality. The proposed method can handle components that are difficult to describe and has been verified effective through numerical examples.
COMPUTER METHODS IN APPLIED MECHANICS AND ENGINEERING
(2021)
Article
Materials Science, Multidisciplinary
Jialin Li, Youwei Zhang, Zongliang Du, Weisheng Zhang, Xinglin Guo, Xu Guo
Summary: This study proposes a framework based on moving morphable components for solving topology optimization problems considering single-frequency and band-frequency steady-state structural dynamic responses. By optimizing the parameters characterizing the locations and geometries of the components, the optimal structural layout can be found. The degree of freedom elimination technique is employed to reduce computational burden. The proposed approach can overcome challenges associated with traditional approaches and is effective for solving topology optimization problems involving structural dynamic behaviors, especially high-frequency responses.
ACTA MECHANICA SOLIDA SINICA
(2022)
Article
Computer Science, Interdisciplinary Applications
T. Shannon, T. T. Robinson, A. Murphy, C. G. Armstrong
Summary: This paper presents the development of generalized Bezier components in the Moving Morphable Components optimization framework and discusses methods for enhancing component parameterization. By using control points and Bezier curves to represent structural components, the shape flexibility and parameterization compatibility with commercial CAD packages are achieved. The paper also includes methods for calculating analytical derivatives and numerical examples to demonstrate the integration of these structural components in the optimization framework.
STRUCTURAL AND MULTIDISCIPLINARY OPTIMIZATION
(2022)
Article
Engineering, Multidisciplinary
Xudong Jiang, Chang Liu, Zongliang Du, Wendong Huo, Xiaoyu Zhang, Feng Liu, Xu Guo
Summary: In this paper, a unified framework for explicit layout/topology optimization of thin-walled structures is introduced. The framework reduces computational cost and improves analysis accuracy, achieves clear material distribution and component placement, and allows easy control of component sizes. The optimized designs can be seamlessly imported into CAD systems, making it highly valuable for practical engineering applications.
COMPUTER METHODS IN APPLIED MECHANICS AND ENGINEERING
(2022)
Article
Engineering, Multidisciplinary
Xudong Jiang, Weisheng Zhang, Chang Liu, Zongliang Du, Xu Guo
Summary: This study investigates the simultaneous shape and topology optimization of shell structures using the Moving Morphable Component (MMC) approach. Unlike traditional implicit optimization methods, the proposed method is developed in a pure explicit way, which is beneficial for optimizing shell structures with complex geometry. By representing the geometric shape and topological form of the shell using Non-Uniform Rational B-Splines (NURBS) in physical space and a series of components in parametric space, the topology and shape of the shell can be optimized simultaneously with fewer design variables, and the results can be seamlessly integrated with CAD systems. Numerical examples are provided to demonstrate the effectiveness of the proposed method.
APPLIED MATHEMATICAL MODELLING
(2023)
Article
Engineering, Multidisciplinary
Guoliang Zhang, Mi Zhao, Junqi Zhang, Xiuli Du
Summary: This paper proposes a novel 3D time-domain artificial boundary method, called Scaled Boundary Perfectly Matched Layer (SBPML), for accurate modeling of truncated infinite domains with general geometry and heterogeneous materials. The SBPML method is a generalization of the Perfectly Matched Layer (PML) and uses a scaled boundary coordinates transformation inspired by the Scaled Boundary Finite Element Method (SBFEM). It can handle non-convex boundaries and physical surfaces/interfaces extending to infinity.
COMPUTER METHODS IN APPLIED MECHANICS AND ENGINEERING
(2023)
Article
Engineering, Multidisciplinary
Weisheng Zhang, Qingqing Jiang, Weizhe Feng, Sung-Kie Youn, Xu Guo
Summary: This article presents an explicit topology optimization approach using the moving morphable void (MMV) based on the boundary element method. Compared to conventional methods, this approach uses B-splines to describe structural boundaries, avoids the use of weak materials, and enables precise and explicit description of voids to capture tiny structural features effectively. Additionally, it naturally avoids numerical instabilities that may arise from the use of fixed meshes.
INTERNATIONAL JOURNAL FOR NUMERICAL METHODS IN ENGINEERING
(2021)
Article
Engineering, Multidisciplinary
Xudong Jiang, Chang Liu, Shaohui Zhang, Weisheng Zhang, Zongliang Du, Xiaoyu Zhang, Huizhong Zeng, Xu Guo
Summary: This paper proposes an explicit method for topology optimization of stiffened plate structures by seeking the optimal geometry parameters of a series of moving morphable components. The proposed approach provides a clear description of the structure and enables the generation of a stiffened plate structure with clear stiffener distribution and smooth geometric boundary.
CMES-COMPUTER MODELING IN ENGINEERING & SCIENCES
(2023)
Article
Computer Science, Interdisciplinary Applications
Ki Hyun Kim, Gil Ho Yoon
Summary: In this study, an acoustic topology optimization method using moving morphable components (MMCs) was developed for the design of 2D sound reduction structures. By changing the parameters and overlapping of MMCs, the shape of the structure is formed to improve the acoustic performance of sound reduction structures. Various designs were evaluated under different conditions and optimization settings, and additional design procedures were devised to enhance the acoustic performance of sound reduction structures.
STRUCTURAL AND MULTIDISCIPLINARY OPTIMIZATION
(2022)
Article
Materials Science, Multidisciplinary
Lei Xu, Weisheng Zhang, Zhenyu Liu, Xu Guo
Summary: Sound quality is crucial for evaluating acoustic device performance. This study proposes an explicit topology optimization approach to enhance the sound quality of acoustic-mechanical structures, using frequency response within a specified range to describe sound quality. The moving morphable component (MMC)-based approach is employed for topology design, while the mixed finite element method is used for sound quality evaluation. Numerical examples demonstrate the effectiveness of the proposed approach in improving sound quality.
ACTA MECHANICA SOLIDA SINICA
(2023)
Article
Computer Science, Interdisciplinary Applications
Kai Li, Rixin Wang, Xianmin Zhang, Benliang Zhu, Junwen Liang, Zhuobo Yang
Summary: This paper proposes an explicit topology optimization method for the design of the front electrode patterns of solar cells. It tests the validity of the method on side-contact and pin-up module solar cells, and compares it with other optimization methods. The results suggest that using the proposed method can potentially improve the performance of solar cells.
STRUCTURAL AND MULTIDISCIPLINARY OPTIMIZATION
(2022)
