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XFEM schemes for level set based structural optimization

Li LI, Michael Yu WANG, Peng WEI

Frontiers of Mechanical Engineering 2012, Volume 7, Issue 4,   Pages 335-356 doi: 10.1007/s11465-012-0351-2

Abstract: with partition integral method are developed and numerical examples are employed to evaluate their accuracyFurthermore, the methods for improving the computational accuracy and efficiency of XFEM are studied,Numerical examples show that the XFEM scheme without quadrature sub-cells can yield similar accuracyanalysis while prominently reducing the time cost and that higher order XFEM elements can improve the computationalaccuracy of structural analysis in the boundary elements, but the time cost is increasing.

Keywords： structural optimization     level set method     extended finite element method (XFEM)     computational accuracyand efficiency    

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Ion beam figuring of continuous phase plates based on the frequency filtering process

Mingjin XU,Yifan DAI,Xuhui XIE,Lin ZHOU,Shengyi LI,Wenqiang PENG

Frontiers of Mechanical Engineering 2017, Volume 12, Issue 1,   Pages 110-115 doi: 10.1007/s11465-017-0430-5

Abstract: approach with different beam diameters based on the frequency filtering method to improve the machining accuracyand efficiency of CPPs during IBF.This method maximizes the high removal efficiency of the large removal function and the high correctiveConsequently, the fast convergence of the machining accuracy and efficiency can be achieved.

Keywords： ion beam figuring (IBF)     continuous phase plates (CPPs)     machining accuracy     machining efficiency     frequency    

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Coupling evaluation for material removal and thermal control on precision milling machine tools

Frontiers of Mechanical Engineering 2022, Volume 17, Issue 1,   Pages 12-12 doi: 10.1007/s11465-021-0668-9

Abstract: useful energy consumed by thermal control (TC) for maintaining internal thermal stability and machining accuracyHence, the cutting energy efficiency model considering the coupling relationship is established basedFurthermore, the heat characteristics are analyzed, which can be adopted to represent machining accuracyThe forced cooling mode of TC results in a 7% reduction in cutting energy efficiency.This paper reveals the coupling effect of MR and TC on energy efficiency and machining accuracy.

Keywords： machine tools     cutting energy efficiency     thermal stability     machining accuracy     coupling evaluation    

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Reliability analysis of kinematic accuracy for the elastic slider-crank mechanism

TUO Yaofei, CHEN Jianjun, ZHANG Chijiang, CHEN Yongqin

Frontiers of Mechanical Engineering 2007, Volume 2, Issue 2,   Pages 214-217 doi: 10.1007/s11465-007-0037-3

Abstract: This paper deals with the static and dynamic output kinematic accuracy of a group of elastic slider-crankstatic and dynamic output kinematic errors are synthesized, and the reliability model of the kinematic accuracyThrough an example, a study of the influencing factors on the reliability of the output kinematic accuracymechanism becomes the principal factor that greatly affects the reliability of the output kinematic accuracy

Keywords： output kinematic     group     slider-crank     kinematic accuracy     displacement    

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Applications of traditional pump design theory to artificial heart and CFD simulation

WANG Yingpeng, SONG Xinwei, YING Chuntong

Frontiers in Energy 2008, Volume 2, Issue 4,   Pages 504-507 doi: 10.1007/s11708-008-0059-5

Abstract: Moreover, computational fluid dynamics (CFD) simulations were performed to determine relevant model parametersThe results show that this procedure can be used for designing a series of high-efficiency artificial

Keywords： computational     high-efficiency artificial     iterative approach     artificial     traditional    

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Improved numerical method for time domain dynamic structure-foundation interaction analysis based on scaled boundary finite element method

DU Jianguo, LIN Gao

Frontiers of Structural and Civil Engineering 2008, Volume 2, Issue 4,   Pages 336-342 doi: 10.1007/s11709-008-0054-2

Abstract: was found that a higher degree of reduced set of base functions resulted in a significant increase of computationalefficiency but a little bit of loss in accuracy.When the reduced set was decreased by 60%, the efficiency may be increased to up to five times, whilethe loss of accuracy of peak value of response will be less than 4%.

Keywords： structure-foundation interface     computational efficiency     different     suitable     numerical approach    

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Challenges of high dam construction to computational mechanics

ZHANG Chuhan

Frontiers of Structural and Civil Engineering 2007, Volume 1, Issue 1,   Pages 12-33 doi: 10.1007/s11709-007-0002-6

Abstract: large dams and hydro-power plants, especially those associated with application of state-of-the-art computationalSome examples demonstrating successful utilizations of computational mechanics in high dam engineeringTo make more use of the computational mechanics in high dam engineering, it is pointed out that muchresearch including different computational methods, numerical models and solution schemes, and verifications

Keywords： reservoir     engineering     hydro-power development     state-of-the-art computational     earthquake    

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A hybrid deep learning model for robust prediction of the dimensional accuracy in precision milling of

Frontiers of Mechanical Engineering 2022, Volume 17, Issue 3, doi: 10.1007/s11465-022-0688-0

Abstract: The use of artificial intelligence to process sensor data and predict the dimensional accuracy of machinedIn this study, we develop a predictive model of the dimensional accuracy for precision milling of thin-walledThe classification accuracy of the popular machine learning methods has been evaluated in comparisoncollected during the milling experiments, the proposed model proved to be capable of predicting dimensional accuracyThe average classification accuracy obtained using the proposed deep learning model was 9.55% higher

Keywords： precision milling     dimensional accuracy     cutting force     convolutional neural networks     coherent noise    

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Understanding coupled factors that affect the modelling accuracy of typical planar compliant mechanisms

Guangbo HAO,Haiyang LI,Suzen KEMALCAN,Guimin CHEN,Jingjun YU

Frontiers of Mechanical Engineering 2016, Volume 11, Issue 2,   Pages 129-134 doi: 10.1007/s11465-016-0392-z

Abstract: using nonlinear finite element analysis (FEA) to reflect coupled factors in affecting the modelling accuracy

Keywords： coupling factors     modelling accuracy     compliant mechanisms     equivalent modulus    

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Investigation of carbon dioxide photoreduction process in a laboratory-scale photoreactor by computational

Frontiers of Chemical Science and Engineering 2022, Volume 16, Issue 7,   Pages 1149-1163 doi: 10.1007/s11705-021-2096-0

Abstract: The novelty of this work is the computational fluid dynamic model combined with the novel carbon dioxide

Keywords： carbon dioxide photoreduction     computational fluid dynamic simulation     kinetic model     Langmuir adsorption    

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Impact of crude distillation unit model accuracy on refinery production planning

Gang FU, Pedro A. Castillo CASTILLO, Vladimir MAHALEC

Frontiers of Engineering Management 2018, Volume 5, Issue 2,   Pages 195-201 doi: 10.15302/J-FEM-2017052

Abstract: In this work, we examine the impact of crude distillation unit (CDU) model errors on the results of refinery-wide optimization for production planning or feedstock selection. We compare the swing cut+ bias CDU model with a recently developed hybrid CDU model (Fu et al., 2016). The hybrid CDU model computes material and energy balances, as well as product true boiling point (TBP) curves and bulk properties (e.g., sulfur % and cetane index, and other properties). Product TBP curves are predicted with an average error of 0.5% against rigorous simulation curves. Case studies of optimal operation computed using a planning model that is based on the swing cut+ bias CDU model and using a planning model that incorporates the hybrid CDU model are presented. Our results show that significant economic benefits can be obtained using accurate CDU models in refinery production planning.

Keywords： impact of model accuracy on production planning     swing cut+ bias CDU model     hybrid CDU model     refinery feedstock    

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Comprehensive analysis of the influence of structural and dynamic parameters on the accuracy of nano-precision

Chengyuan LIANG, Fang YUAN, Xuedong CHEN, Wei JIANG, Lizhan ZENG, Xin LUO

Frontiers of Mechanical Engineering 2019, Volume 14, Issue 3,   Pages 255-272 doi: 10.1007/s11465-019-0538-x

Abstract: stage, which are determined by structural and dynamic parameters, exert a serious influence on the accuracyA systematic approach to modeling the dynamic accuracy of a nano-precision positioning stage is developedplane errors, foundation vibrations, and positions of the acting points of driving forces, on dynamic accuracy

Keywords： nano-precision positioning stage     analysis and design     structural and dynamic parameters     dynamic accuracy    

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AMMONIA DISPERSION FROM MULTI-FLOOR VERSUS STANDARD SINGLE-FLOOR PIG PRODUCTION FACILITIES BASED ON COMPUTATIONAL

Frontiers of Agricultural Science and Engineering 2023, Volume 10, Issue 3,   Pages 374-389 doi: 10.15302/J-FASE-2023501

Abstract:

● NH3 dispersion from a multi-floor pig building was compared to a single-floor building.

Keywords： pig building     computational fluid dynamics     ammonia     dispersion    

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Computational fluid dynamics simulation of aerosol transport and deposition

Yingjie TANG, Bing GUO

Frontiers of Environmental Science & Engineering 2011, Volume 5, Issue 3,   Pages 362-377 doi: 10.1007/s11783-011-0365-8

Abstract: In this article computational fluid dynamics (CFD) simulation of aerosol transport and deposition, i.e

Keywords： computational fluid dynamics (CFD)     aerosol     transport     deposition    

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Surface accuracy optimization of mechanical parts with multiple circular holes for additive manufacturing

Jinghua XU, Hongsheng SHENG, Shuyou ZHANG, Jianrong TAN, Jinlian DENG

Frontiers of Mechanical Engineering 2021, Volume 16, Issue 1,   Pages 133-150 doi: 10.1007/s11465-020-0610-6

Abstract: Surface accuracy directly affects the surface quality and performance of mechanical parts.with traditional machining methods, additive manufacturing (AM) technology can decrease the surface accuracyHowever, an accuracy error may still exist on the surface of circular holes fabricated by AM due to theThis study proposes a surface accuracy optimization approach for mechanical parts with multiple circularoptimal AM part build orientation is determined using the genetic algorithm to optimize the surface accuracy

Keywords： surface accuracy optimization     multiple circular holes     additive manufacturing (AM)     part build orientation    

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Title Author Date Type Operation

XFEM schemes for level set based structural optimization

Li LI, Michael Yu WANG, Peng WEI

Journal Article

Ion beam figuring of continuous phase plates based on the frequency filtering process

Mingjin XU,Yifan DAI,Xuhui XIE,Lin ZHOU,Shengyi LI,Wenqiang PENG

Journal Article

Coupling evaluation for material removal and thermal control on precision milling machine tools

Journal Article

Reliability analysis of kinematic accuracy for the elastic slider-crank mechanism

TUO Yaofei, CHEN Jianjun, ZHANG Chijiang, CHEN Yongqin

Journal Article

Applications of traditional pump design theory to artificial heart and CFD simulation

WANG Yingpeng, SONG Xinwei, YING Chuntong

Journal Article

Improved numerical method for time domain dynamic structure-foundation interaction analysis based on scaled boundary finite element method

DU Jianguo, LIN Gao

Journal Article

Challenges of high dam construction to computational mechanics

ZHANG Chuhan

Journal Article

A hybrid deep learning model for robust prediction of the dimensional accuracy in precision milling of

Journal Article

Understanding coupled factors that affect the modelling accuracy of typical planar compliant mechanisms

Guangbo HAO,Haiyang LI,Suzen KEMALCAN,Guimin CHEN,Jingjun YU

Journal Article

Investigation of carbon dioxide photoreduction process in a laboratory-scale photoreactor by computational

Journal Article

Impact of crude distillation unit model accuracy on refinery production planning

Gang FU, Pedro A. Castillo CASTILLO, Vladimir MAHALEC

Journal Article

Comprehensive analysis of the influence of structural and dynamic parameters on the accuracy of nano-precision

Chengyuan LIANG, Fang YUAN, Xuedong CHEN, Wei JIANG, Lizhan ZENG, Xin LUO

Journal Article

AMMONIA DISPERSION FROM MULTI-FLOOR VERSUS STANDARD SINGLE-FLOOR PIG PRODUCTION FACILITIES BASED ON COMPUTATIONAL

Journal Article

Computational fluid dynamics simulation of aerosol transport and deposition

Yingjie TANG, Bing GUO

Journal Article

Surface accuracy optimization of mechanical parts with multiple circular holes for additive manufacturing

Jinghua XU, Hongsheng SHENG, Shuyou ZHANG, Jianrong TAN, Jinlian DENG

Journal Article