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Robust isogeometric topology optimization for piezoelectric actuators with uniform manufacturability

Frontiers of Mechanical Engineering 2022, Volume 17, Issue 2, doi: 10.1007/s11465-022-0683-5

Abstract: The main purpose of the current paper is to propose a robust isogeometric topology optimization (RITOThe erode–dilate operator is introduced in topology representation to construct the eroded, intermediate

Keywords： piezoelectric actuator     isogeometric topology optimization     uniform manufacturability     robust formulation    

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Massively efficient filter for topology optimization based on the splitting of tensor product structure

Frontiers of Mechanical Engineering 2022, Volume 17, Issue 4, doi: 10.1007/s11465-022-0710-6

Abstract: In this work, we put forward a massively efficient filter for topology optimization (TO) utilizing thewhich the sensitivity analysis is reformulated for the nodal design variables without altering the optimization

Keywords： topology optimization     isogeometric analysis     finite element analysis     tensor product structure     sensitivity    

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Solving topology optimization problems by the Guide-Weight method

Xinjun LIU, Zhidong LI, Liping WANG, Jinsong WANG

Frontiers of Mechanical Engineering 2011, Volume 6, Issue 1,   Pages 136-150 doi: 10.1007/s11465-010-0126-6

Abstract:

Finding a good solution method for topology optimization problems is always paid attention to by theproposed first by Chen in 1980s, was effectively and successfully used in antenna structures’ optimizationWhen the Guide-Weight method is applied into topology optimization, it works very well with unified andThe algorithm of the Guide-Weight method and the improvement on it are described; two formulations of topologyoptimization solved by the Guide-Weight method combining with SIMP method are presented; subsequently

Keywords： Guide-Weight method     topology optimization     SIMP method    

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Controlling interstory drift ratio profiles via topology optimization strategies

Frontiers of Structural and Civil Engineering doi: 10.1007/s11709-022-0892-3

Abstract: approach to control the profiles of interstory drift ratios along the height of building structures via topologyoptimization is proposed herein.The theoretical foundation of the proposed approach involves solving a min–max optimization problem toThe optimization results show the optimal structural features for controlling the interstory drift ratios

Keywords： interstory drift ratio     aggregation function     bound formulation     min–max problem     topology optimization    

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Manufacturing cost constrained topology optimization for additive manufacturing

Jikai LIU, Qian CHEN, Xuan LIANG, Albert C. TO

Frontiers of Mechanical Engineering 2019, Volume 14, Issue 2,   Pages 213-221 doi: 10.1007/s11465-019-0536-z

Abstract: This paper presents a manufacturing cost constrained topology optimization algorithm considering theTopology optimization for additive manufacturing was recently extensively studied, and many related topicsopportunity to balance the manufacturing cost while pursuing the superior structural performance through topologyoptimization.optimization problem as a constraint.

Keywords： topology optimization     manufacturing cost     additive manufacturing     powder bed    

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A MATLAB code for the material-field series-expansion topology optimization method

Frontiers of Mechanical Engineering 2021, Volume 16, Issue 3,   Pages 607-622 doi: 10.1007/s11465-021-0637-3

Abstract: This paper presents a MATLAB implementation of the material-field series-expansion (MFSE) topo-logy optimizationmethod uses a bounded material field with specified spatial correlation to represent the structural topologyThe implementation of the code and its extensions to topology optimization problems with multiple loadMFSE topology optimization method with non-gradient optimization algorithms without sensitivity informationbecause only a few design variables are required to describe relatively complex structural topology

Keywords： MATLAB implementation     topology optimization     material-field series-expansion method     bounded material    

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Robust topology optimization of multi-material lattice structures under material and load uncertainties

Yu-Chin CHAN, Kohei SHINTANI, Wei CHEN

Frontiers of Mechanical Engineering 2019, Volume 14, Issue 2,   Pages 141-152 doi: 10.1007/s11465-019-0531-4

Abstract: This work proposes a density-based robust topology optimization method for meso- or macro-scale multi-material

Keywords： robust topology optimization     lattice structures     multi-material     material uncertainty     load uncertainty    

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Efficient, high-resolution topology optimization method based on convolutional neural networks

Liang XUE, Jie LIU, Guilin WEN, Hongxin WANG

Frontiers of Mechanical Engineering 2021, Volume 16, Issue 1,   Pages 80-96 doi: 10.1007/s11465-020-0614-2

Abstract: Topology optimization is a pioneer design method that can provide various candidates with high mechanicalIn this study, an efficient, high-resolution topology optimization method is developed based on the super-resolutionbuilt as another speed-up strategy to reduce the high computational cost and memory requirements for 3D topologyoptimization problems.Typical examples show that the high-resolution topology optimization method using SRCNN demonstrates

Keywords： topology optimization     convolutional neural network     high resolution     density-based    

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Level set-based isogeometric topology optimization for maximizing fundamental eigenfrequency

Manman XU, Shuting WANG, Xianda XIE

Frontiers of Mechanical Engineering 2019, Volume 14, Issue 2,   Pages 222-234 doi: 10.1007/s11465-019-0534-1

Abstract: we develop an isogeometric analysis (IGA)-based level set model for the formulation and solution of topologyoptimization in cases with maximum eigenfrequency.The method is applied to topology optimization problems of maximizing the fundamental eigenfrequencysingle target eigenmode is employed to prevent the exchange of eigenmode order number in eigenfrequency optimization

Keywords： topology optimization     level set method     isogeometric analysis     eigenfrequency    

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Robust topology optimization of hinge-free compliant mechanisms with material uncertainties based on

Junjie ZHAN, Yangjun LUO

Frontiers of Mechanical Engineering 2019, Volume 14, Issue 2,   Pages 201-212 doi: 10.1007/s11465-019-0529-y

Abstract: This paper presents a new robust topology optimization framework for hinge-free compliant mechanismsRobust topology optimization of compliant mechanisms is then defined to minimize the variation in outputThe nest optimization problem is solved using a gradient-based optimization algorithm.examples are presented to illustrate the effectiveness of the proposed method for circumventing hinges in topologyoptimization of compliant mechanisms.

Keywords： compliant mechanisms     robust topology optimization     hinges     uncertainty     bounded field    

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From Computer-Aided Design (CAD) Toward Human-Aided Design (HAD): An Isogeometric Topology Optimization

Yingjun Wang,Mi Xiao,Zhaohui Xia,Peigen Li,Liang Gao,

Engineering doi: 10.1016/j.eng.2022.07.013

Abstract: In HAD, computers can automatically complete the whole product design via a new isogeometric topologyoptimization (ITO), while humans just assist to slightly modify the design to meet requirements.

Keywords： Human-aided design     CAD/CAE integration     Isogeometric analysis     Structural optimization     Isogeometric topologyoptimization    

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Level set band method: A combination of density-based and level set methods for the topology optimization

Peng WEI, Wenwen WANG, Yang YANG, Michael Yu WANG

Frontiers of Mechanical Engineering 2020, Volume 15, Issue 3,   Pages 390-405 doi: 10.1007/s11465-020-0588-0

Abstract: transplanted from the computer graphics field, has been successfully introduced into the structural topologyoptimization field for about two decades, but it still has not been widely applied to practical engineeringas a boundary evolution algorithm, which is not as flexible as density-based methods at controlling topologyIn this study, a level set band method is proposed to overcome this drawback in handling topology changesThe proposed method demonstrates a flexible topology change by applying a certain size of the level set

Keywords： level set method     topology optimization     density-based method     level set band    

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Topology optimization of transient problem with maximum dynamic response constraint using SOAR scheme

Frontiers of Mechanical Engineering 2021, Volume 16, Issue 3,   Pages 593-606 doi: 10.1007/s11465-021-0636-4

Abstract: This paper proposes a novel method for the continuum topology optimization of transient vibration problemthe optimized results clearly demonstrate that the transient effects cannot be ignored in structural topologyoptimization.

Keywords： topology optimization     solid isotropic material with penalization     transient response     aggregation function    

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Independent continuous and mapping method of structural topology optimization based on the global stress

Yunkang SUI, Jili FENG, Hongling YE, Xirong PENG,

Frontiers of Mechanical Engineering 2010, Volume 5, Issue 2,   Pages 130-142 doi: 10.1007/s11465-010-0011-3

Abstract: There are three difficulties in topology optimization of continuum structures. 1) The topology underon compliance objective functions. 2) With local constraints, such as an elemental stress limit, the topologydifficult to consider different influences between the loads with small forces and big forces, and some topologyTo overcome difficulties above, four measures are adopted. 1) Topology optimization model is establishedSeveral numerical examples show that the topology path of transferring forces can be obtained more easily

Keywords： independent continuous mapping (ICM) method     global stresses constraints     topology optimization     continuum    

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Isogeometric topology optimization based on energy penalization for symmetric structure

Xianda XIE, Shuting WANG, Ming YE, Zhaohui XIA, Wei ZHAO, Ning JIANG, Manman XU

Frontiers of Mechanical Engineering 2020, Volume 15, Issue 1,   Pages 100-122 doi: 10.1007/s11465-019-0568-4

Abstract: We present an energy penalization method for isogeometric topology optimization using moving morphableTopology optimization problems of asymmetric, bilateral symmetric, and periodic symmetric structuresenergy penalization method for the ITO–MMC can improve the convergence rate from 18.6% to 44.5% for the optimizationconstraint, the proposed method can reduce the objective value by 5.6% and obtain a final optimized topology

Keywords： topology optimization     moving morphable component     isogeometric analysis     energy penalization method     symmetric    

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Title Author Date Type Operation

Robust isogeometric topology optimization for piezoelectric actuators with uniform manufacturability

Journal Article

Massively efficient filter for topology optimization based on the splitting of tensor product structure

Journal Article

Solving topology optimization problems by the Guide-Weight method

Xinjun LIU, Zhidong LI, Liping WANG, Jinsong WANG

Journal Article

Controlling interstory drift ratio profiles via topology optimization strategies

Journal Article

Manufacturing cost constrained topology optimization for additive manufacturing

Jikai LIU, Qian CHEN, Xuan LIANG, Albert C. TO

Journal Article

A MATLAB code for the material-field series-expansion topology optimization method

Journal Article

Robust topology optimization of multi-material lattice structures under material and load uncertainties

Yu-Chin CHAN, Kohei SHINTANI, Wei CHEN

Journal Article

Efficient, high-resolution topology optimization method based on convolutional neural networks

Liang XUE, Jie LIU, Guilin WEN, Hongxin WANG

Journal Article

Level set-based isogeometric topology optimization for maximizing fundamental eigenfrequency

Manman XU, Shuting WANG, Xianda XIE

Journal Article

Robust topology optimization of hinge-free compliant mechanisms with material uncertainties based on

Junjie ZHAN, Yangjun LUO

Journal Article

From Computer-Aided Design (CAD) Toward Human-Aided Design (HAD): An Isogeometric Topology Optimization

Yingjun Wang,Mi Xiao,Zhaohui Xia,Peigen Li,Liang Gao,

Journal Article

Level set band method: A combination of density-based and level set methods for the topology optimization

Peng WEI, Wenwen WANG, Yang YANG, Michael Yu WANG

Journal Article

Topology optimization of transient problem with maximum dynamic response constraint using SOAR scheme

Journal Article

Independent continuous and mapping method of structural topology optimization based on the global stress

Yunkang SUI, Jili FENG, Hongling YE, Xirong PENG,

Journal Article

Isogeometric topology optimization based on energy penalization for symmetric structure

Xianda XIE, Shuting WANG, Ming YE, Zhaohui XIA, Wei ZHAO, Ning JIANG, Manman XU

Journal Article