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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.The MFSE method uses a bounded material field with specified spatial correlation to represent the structuralWith the series-expansion method for bounded fields, this material field is described with the characteristicCompared with the conventional density-based method, the MFSE method decouples the topological description

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

Achieving desired nodal lines in freely vibrating structures via material-field series-expansion topology

Frontiers of Mechanical Engineering 2023, Volume 18, Issue 3, doi: 10.1007/s11465-023-0758-y

Abstract: In this study, an effective material-field series-expansion (MFSE)-based topology optimization design

Keywords: nodal line     topology optimization     structural dynamics design     material-field series-expansion    

Vectorial Eigenmode Analysis of Optical Waveguides Based on the Variable Transformed Series ExpansionMethod

Xiao Jinbiao,Sun Xiaohan,Zhang Mingde,Ding Dong

Strategic Study of CAE 2001, Volume 3, Issue 11,   Pages 49-53

Abstract: supported by the buried rectangular and rib optical waveguides are obtained using variable transformed seriesexpansion method.In addition, small matrix derived from this method promotes the computational efficiency.

Keywords: variable transformed series expansion method     optical waveguides     vectorial eigenmode analysis    

Modelling autogenous expansion for magnesia concrete in arch dams

JIN Feng, LUO Xiaoqing, ZHANG Chuhan, ZHANG Guoxin

Frontiers of Structural and Civil Engineering 2008, Volume 2, Issue 3,   Pages 211-218 doi: 10.1007/s11709-008-0025-7

Abstract: To evaluate the effects of autogenous expansion on the stresses of arch dams, a simple model of autogenousexpansion for Magnesia Concrete in dam engineering is presented.This model is based on three assumptions: 1) the total amount of autogenous expansion of Magnesia Concreteis related only to the properties of materials and mixing of concrete; 2) the autogenous expansion ofThe model is verified by some experimental data of autogenous expansion of Magnesia Concrete and field-measured

Keywords: field-measured     irreversibility     temperature     irreversible     element arch    

Robust topology optimization of hinge-free compliant mechanisms with material uncertainties based ona non-probabilistic field model

Junjie ZHAN, Yangjun LUO

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

Abstract: new robust topology optimization framework for hinge-free compliant mechanisms with spatially varying materialuncertainties, which are described using a non-probabilistic bounded field model.Bounded field uncertainties are efficiently represented by a reduced set of uncertain-but-bounded coefficientson the basis of the series expansion method.Numerical examples are presented to illustrate the effectiveness of the proposed method for circumventing

Keywords: compliant mechanisms     robust topology optimization     hinges     uncertainty     bounded field    

A FEniCS implementation of the phase field method for quasi-static brittle fracture

HIRSHIKESH, Sundararajan NATARAJAN, Ratna Kumar ANNABATTULA

Frontiers of Structural and Civil Engineering 2019, Volume 13, Issue 2,   Pages 380-396 doi: 10.1007/s11709-018-0471-9

Abstract: In the recent years, the phase field method for simulating fracture problems has received considerableThis is due to the salient features of the method: 1) it can be incorporated into any conventional finiteThe present work discusses the implementation of the phase field method for brittle fracture within the

Keywords: phase field method     FEniCS     brittle fracture     crack propagation     variational theory of fracture    

Experimental study and field application of calcium sulfoaluminate cement for rapid repair of concrete

Yanhua GUAN, Ying GAO, Renjuan SUN, Moon C. WON, Zhi GE

Frontiers of Structural and Civil Engineering 2017, Volume 11, Issue 3,   Pages 338-345 doi: 10.1007/s11709-017-0411-0

Abstract: properties of Type III and CSA cement concrete, including compressive strength, coefficient of thermal expansionBased on the laboratory results, the CSA cement was selected as the partial-depth rapid repair material

Keywords: Calcium Sulfoaluminate (CSA) cement     Type III cement     coefficient of thermal expansion (CTE)     shrinkage    

Applying the spectral stochastic finite element method in multiple-random field RC structures

Abbas YAZDANI

Frontiers of Structural and Civil Engineering 2022, Volume 16, Issue 4,   Pages 434-447 doi: 10.1007/s11709-022-0820-6

Abstract: This paper uses the spectral stochastic finite element method (SSFEM) for analyzing reinforced concreteIn doing so, it presents a new framework to study how the correlation length of a random field (RF) with

Keywords: uncertainty     spectral stochastic finite element method     correlation length     reliability assessment     reinforced    

Multiscale stochastic finite element method on random field modeling of geotechnical problems – a fast

Xi F. XU

Frontiers of Structural and Civil Engineering 2015, Volume 9, Issue 2,   Pages 107-113 doi: 10.1007/s11709-014-0268-4

Abstract: The Green-function-based multiscale stochastic finite element method (MSFEM) has been formulated basedIn this study a fast computing procedure based on the MSFEM is developed to solve random field geotechnicalsettlement shows that the procedure achieves significant computing efficiency compared with Monte Carlo method

Keywords: multiscale     finite element     settlement     perturbation     random field     geotechnical    

Digital high-efficiency print forming method and device for multi-material casting molds

Zhongde SHAN, Zhi GUO, Dong DU, Feng LIU, Wenjiang LI

Frontiers of Mechanical Engineering 2020, Volume 15, Issue 2,   Pages 328-337 doi: 10.1007/s11465-019-0574-6

Abstract: However, current sand mold 3D printing technology exhibits several problems, such as single-materialThis study proposes a novel high-efficiency print forming method and device for multi-material castingThe proposed method is specifically related to the integrated forming of two-way coating and printingThe integrated forming method for layered heating and roller compaction presented in this study effectivelyThe manufacture of multi-material casting molds is demonstrated on typical wheeled cast-iron parts.

Keywords: multi-material casting mold     3D printing     efficient print forming method    

Combined Application of Wide-Field Electromagnetic Method and Flow Field Fitting Method for High-Resolution Article

Jishan He

Engineering 2018, Volume 4, Issue 5,   Pages 667-675 doi: 10.1016/j.eng.2018.09.006

Abstract: and the water distribution in the mine by separate use of various exploration methods such as seismic methodTo solve this difficult problem, a combination of the wide-field electromagnetic method and the flowfield fitting method with three-dimensional resistivity data inversion was applied to determine the precise

Keywords: Wide-field electromagnetic method     Flow field fitting method     Goaf     Water abundance     High-resolution exploration    

Energy field-assisted high-speed dry milling green machining technology for difficult-to-machine metal

Frontiers of Mechanical Engineering 2023, Volume 18, Issue 2, doi: 10.1007/s11465-022-0744-9

Abstract: Energy field-assisted machining technology has the potential to overcome the limitations of machiningThe introduction of advanced energy-field-assisted green processing technology can improve the machinabilityThe laser energy field, ultrasonic energy field, and cryogenic minimum quantity lubrication energy fieldsBy analyzing the effects of changing the energy field and cutting parameters on tool wear, chip morphologyFinally, the shortcomings and technical challenges of energy-field-assisted milling are summarized in

Keywords: difficult-to-machine metal material     green machining     high-speed dry milling     laser energy field-assistedmilling     ultrasonic energy field-assisted milling     cryogenic minimum quantity lubrication energy field-assisted    

Generalization and application in time series forecasting of the least square support vector machinemethod

Xiang Xiaodong

Strategic Study of CAE 2008, Volume 10, Issue 11,   Pages 89-92

Abstract: According to the theory that the present data contains more future information than historical data in time-series,the paper extends the prediction method of least square support vector machine and obtains a more generalvector machine,and develops algorithm of the extended prediction model.Prediction examples of two time-seriesshow that the extended model is more effective.Therefore it improves the value of the prediction method

Keywords: least square support vector machine     generalization     time series     forecasting    

Macro-architectured cellular materials: Properties, characteristic modes, and prediction methods

Zheng-Dong MA

Frontiers of Mechanical Engineering 2018, Volume 13, Issue 3,   Pages 442-459 doi: 10.1007/s11465-018-0488-8

Abstract: material, were introduced in this study.First, a strain-based homogenization method was developed using an approach that separated the strainfield into a homogenized strain field and a strain variation field in the local cellular domain superposedfield.The new method was then extended to a stress-based homogenization process based on the principle of virtual

Keywords: architectured material     cellular materials     multi-scale modeling     homogenization method     effective materialproperties     computational method    

Stress field near circular-arc interface crack tip based on electric saturation concept

Longchao DAI, Xinwei WANG

Frontiers of Mechanical Engineering 2009, Volume 4, Issue 3,   Pages 320-325 doi: 10.1007/s11465-009-0042-9

Abstract: between a circular piezoelectric inhomogeneity and an infinite piezoelectric matrix subjected to a far-fielduniform loading is investigated by an electrical strip saturation model, the complex variable method, and the method of analytical continuation.

Keywords: piezoelectric material     arc crack     strip saturation     stress intensity factor    

Title Author Date Type Operation

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

Journal Article

Achieving desired nodal lines in freely vibrating structures via material-field series-expansion topology

Journal Article

Vectorial Eigenmode Analysis of Optical Waveguides Based on the Variable Transformed Series ExpansionMethod

Xiao Jinbiao,Sun Xiaohan,Zhang Mingde,Ding Dong

Journal Article

Modelling autogenous expansion for magnesia concrete in arch dams

JIN Feng, LUO Xiaoqing, ZHANG Chuhan, ZHANG Guoxin

Journal Article

Robust topology optimization of hinge-free compliant mechanisms with material uncertainties based ona non-probabilistic field model

Junjie ZHAN, Yangjun LUO

Journal Article

A FEniCS implementation of the phase field method for quasi-static brittle fracture

HIRSHIKESH, Sundararajan NATARAJAN, Ratna Kumar ANNABATTULA

Journal Article

Experimental study and field application of calcium sulfoaluminate cement for rapid repair of concrete

Yanhua GUAN, Ying GAO, Renjuan SUN, Moon C. WON, Zhi GE

Journal Article

Applying the spectral stochastic finite element method in multiple-random field RC structures

Abbas YAZDANI

Journal Article

Multiscale stochastic finite element method on random field modeling of geotechnical problems – a fast

Xi F. XU

Journal Article

Digital high-efficiency print forming method and device for multi-material casting molds

Zhongde SHAN, Zhi GUO, Dong DU, Feng LIU, Wenjiang LI

Journal Article

Combined Application of Wide-Field Electromagnetic Method and Flow Field Fitting Method for High-Resolution

Jishan He

Journal Article

Energy field-assisted high-speed dry milling green machining technology for difficult-to-machine metal

Journal Article

Generalization and application in time series forecasting of the least square support vector machinemethod

Xiang Xiaodong

Journal Article

Macro-architectured cellular materials: Properties, characteristic modes, and prediction methods

Zheng-Dong MA

Journal Article

Stress field near circular-arc interface crack tip based on electric saturation concept

Longchao DAI, Xinwei WANG

Journal Article