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An isogeometric numerical study of partially and fully implicit schemes for transient adjoint shape sensitivity

Zhen-Pei WANG, Zhifeng XIE, Leong Hien POH

Frontiers of Mechanical Engineering 2020, Volume 15, Issue 2,   Pages 279-293 doi: 10.1007/s11465-019-0575-5

Abstract: In structural design optimization involving transient responses, time integration scheme plays a crucialIn this work, the influence of time integration scheme is studied numerically for the adjoint shape sensitivityanalysis of two benchmark transient heat conduction problems within the framework of isogeometric analysis

Keywords： isogeometric shape optimization     design-dependent boundary condition     transient heat conduction     implicit    

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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 (RITOIn RITO, the isogeometric analysis replacing the conventional finite element method is applied to compute

Keywords： piezoelectric actuator     isogeometric topology optimization     uniform manufacturability     robust formulation    

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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: In this study, we develop an isogeometric analysis (IGA)-based level set model for the formulation andsolution of topology optimization 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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Geometrically constrained isogeometric parameterized level-set based topology optimization via trimmed

Yingjun WANG,David J. BENSON

Frontiers of Mechanical Engineering 2016, Volume 11, Issue 4,   Pages 328-343 doi: 10.1007/s11465-016-0403-0

Abstract: an approach based on the fast point-in-polygon (PIP) algorithm and trimmed elements is proposed for isogeometrictopology optimization (TO) with arbitrary geometric constraints.The isogeometric parameterized level-set-based TO method, which directly uses the non-uniform rationalefficient quadrature rule that can design the quadrature points and weights for arbitrary geometric shape

Keywords： isogeometric analysis     topology optimization     level set method     arbitrary geometric constraint     trimmed element    

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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 optimization

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

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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 2023, Volume 22, Issue 3,   Pages 94-105 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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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 optimizationproduct structure and delivers a much more efficient way of solving TO problems in the frameworks of isogeometric

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

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Shape optimization of aluminium alloy spherical reticulated shells considering nonlinearities

Wei LIU; Lishu XU; Shaojun ZHU; Lijuan LI; Feng LIU; Zhe XIONG

Frontiers of Structural and Civil Engineering 2022, Volume 16, Issue 12,   Pages 1565-1580 doi: 10.1007/s11709-022-0867-4

Abstract: This study proposes a shape optimization method for K6 aluminum alloy spherical reticulated shells withThe optimization procedure adopts a genetic algorithm in which the elastoplastic non-linear bucklingpath toward achieving a larger elastoplastic non-linear buckling load without changing the macroscopic shapeIn addition, the variation in structural performance during optimization is illustrated.Through parametric analysis, practical design tables containing the parameters of the optimized shape

Keywords： shape optimization     aluminum alloy     spherical reticulated shell     non-linear buckling     material nonlinearity    

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Topology optimization and seismic collapse assessment of shape memory alloy (SMA)-braced frames: Effectiveness

Aydin HASSANZADEH; Saber MORADI

Frontiers of Structural and Civil Engineering 2022, Volume 16, Issue 3,   Pages 281-301 doi: 10.1007/s11709-022-0807-3

Abstract: This paper presents a seismic topology optimization study of steel braced frames with shape memory alloyThe topology optimization is performed on 5- and 10-story SMA-BFs considering the placement, length,Geometric, strength, and performance-based design constraints are considered in the optimization.

Keywords： topology optimization     shape memory alloy     Fe-based SMA     steel braced frames     performance-based seismic    

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Shape design of arch dams under load uncertainties with robust optimization

Fengjie TAN, Tom LAHMER

Frontiers of Structural and Civil Engineering 2019, Volume 13, Issue 4,   Pages 852-862 doi: 10.1007/s11709-019-0522-x

Abstract: This type of optimization takes into account uncertainties in the loads and in the material propertiesdesign optimization (RBDO), are in general computationally expensive and rely on estimates of the systemThis leads to a bi-level optimization program where the volume of the dam is optimized under the worstThe optimization of an arch-type dam is realized here by a robust optimization method under load uncertaintyComparing with any traditional deterministic optimization method, which only concerns the minimum objective

Keywords： arch dam     shape optimization     robust optimization     load uncertainty     approximation model    

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Implicit Heaviside filter with high continuity based on suitably graded THB splines

Frontiers of Mechanical Engineering 2022, Volume 17, Issue 1,   Pages 14-14 doi: 10.1007/s11465-021-0670-2

Abstract: The variable density topology optimization (TO) method has been applied to various engineering fieldsIn this approach, the fixed analysis mesh of isogeometric analysis is decoupled from the design mesh,

Keywords： topology optimization     truncated hierarchical B-spline     isogeometric analysis     black and white designs    

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dynamic analysis of functionally graded fluid-infiltrated porous skew and elliptical nanoplates using an isogeometric

Frontiers of Structural and Civil Engineering 2023, Volume 17, Issue 3,   Pages 477-502 doi: 10.1007/s11709-023-0918-5

Abstract: nanoplates placed on Pasternak’s two-parameter elastic foundation is performed for the first time using isogeometric

Keywords： static bending     free and forced vibrations     nonlocal theory     isogeometric analysis     fluid-infiltrated    

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Free vibration analysis of cracked thin plates by quasi-convex coupled isogeometric-meshfree method

Hanjie ZHANG,Junzhao WU,Dongdong WANG

Frontiers of Structural and Civil Engineering 2015, Volume 9, Issue 4,   Pages 405-419 doi: 10.1007/s11709-015-0310-1

Abstract: The free vibration analysis of cracked thin plates via a quasi-convex coupled isogeometric-meshfree methodThis formulation employs the consistently coupled isogeometric-meshfree strategy where a mixed basisThe mixed basis vector simultaneously offers the consistent isogeometric-meshfree coupling in the coupledregion and the quasi-convex property for the meshfree shape functions in the meshfree region, whichThe quasi-convex meshfree shape functions mimic the isogeometric basis function as well as offer the

Keywords： meshfree method     isogeometric analysis     quasi-convex isogeometric-meshfree method     free vibration     cracked    

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A frequency error estimation for isogeometric analysis of Kirchhoff–Love cylindrical shells

Frontiers of Structural and Civil Engineering doi: 10.1007/s11709-023-0006-x

Abstract: A frequency error estimation is presented for the isogeometric free vibration analysis of Kirchhoff–LoveBy analyzing the discrete isogeometric equations with the aid of harmonic wave assumption, the frequencywith these theoretical findings, the 2nd and 4th orders of frequency accuracy are attained for the isogeometricalso manifest an excellent magnitude match between numerical and theoretical frequency errors for the isogeometric

Keywords： isogeometric analysis     Kirchhoff–Love cylindrical shell     free vibration     frequency error     convergence    

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An ANN-exhaustive-listing method for optimization of multiple building shapes and envelope properties

Yaolin LIN, Wei YANG

Frontiers in Energy 2021, Volume 15, Issue 2,   Pages 550-563 doi: 10.1007/s11708-019-0607-1

Abstract: comfort of building occupants has not been considered in maximizing thermal performance in building shapeoptimization.It is found that the building shape needs to be treated separately to achieve sufficient accuracy of

Keywords： ANN (artificial neural network)     exhaustive-listing     building shape     optimization     thermal load     thermal comfort    

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Title Author Date Type Operation

An isogeometric numerical study of partially and fully implicit schemes for transient adjoint shape sensitivity

Zhen-Pei WANG, Zhifeng XIE, Leong Hien POH

Journal Article

Robust isogeometric topology optimization for piezoelectric actuators with uniform manufacturability

Journal Article

Level set-based isogeometric topology optimization for maximizing fundamental eigenfrequency

Manman XU, Shuting WANG, Xianda XIE

Journal Article

Geometrically constrained isogeometric parameterized level-set based topology optimization via trimmed

Yingjun WANG,David J. BENSON

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

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

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

Journal Article

Shape optimization of aluminium alloy spherical reticulated shells considering nonlinearities

Wei LIU; Lishu XU; Shaojun ZHU; Lijuan LI; Feng LIU; Zhe XIONG

Journal Article

Topology optimization and seismic collapse assessment of shape memory alloy (SMA)-braced frames: Effectiveness

Aydin HASSANZADEH; Saber MORADI

Journal Article

Shape design of arch dams under load uncertainties with robust optimization

Fengjie TAN, Tom LAHMER

Journal Article

Implicit Heaviside filter with high continuity based on suitably graded THB splines

Journal Article

dynamic analysis of functionally graded fluid-infiltrated porous skew and elliptical nanoplates using an isogeometric

Journal Article

Free vibration analysis of cracked thin plates by quasi-convex coupled isogeometric-meshfree method

Hanjie ZHANG,Junzhao WU,Dongdong WANG

Journal Article

A frequency error estimation for isogeometric analysis of Kirchhoff–Love cylindrical shells

Journal Article

An ANN-exhaustive-listing method for optimization of multiple building shapes and envelope properties

Yaolin LIN, Wei YANG

Journal Article