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Existence of complete band gaps in 2D steel-water phononic crystal with square lattice

Cunfu HE, Huanyu ZHAO, Ruiju WEI, Bin WU

Frontiers of Mechanical Engineering 2010, Volume 5, Issue 4,   Pages 450-454 doi: 10.1007/s11465-010-0105-y

Abstract: The band structure of phononic crystal is calculated by a plane wave expansion (PWE) method.

Keywords： phononic crystal     plane wave expansion (PWE) method     experimental study    

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On subsurface box-shaped lined tunnel under incident SH-wave propagation

Frontiers of Structural and Civil Engineering 2021, Volume 15, Issue 4,   Pages 948-960 doi: 10.1007/s11709-021-0740-x

Abstract: In this paper, a half-plane time-domain boundary element method is applied to obtain the seismic groundAfter encoding the method in a previously confirmed computer program, a numerical study is carried outto sensitize some effective parameters, including frequency content and incident wave angle for obtainingresults showed that subsurface openings with sharp corners distorted the propagation path of the anti-plane

Keywords： box-lined tunnel     half-plane BEM     surface response     SH-wave     time-domain    

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Finite element analysis of creep for plane steel frames in fire

Hui ZHU, Yuching WU

Frontiers of Structural and Civil Engineering 2012, Volume 6, Issue 3,   Pages 297-307 doi: 10.1007/s11709-012-0162-x

Abstract: formulation is derived, and the corresponding numerical model is developed to study the creep behavior of planeNext, the numerical model is used to analyze the creep behavior of the plane steel frames under decreasing

Keywords： creep     plane steel frame     fire     finite element method     geometric nonlinearity    

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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 material    

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A simple method for evaluating liquefaction potential from shear wave velocity

Lianyang ZHANG,

Frontiers of Structural and Civil Engineering 2010, Volume 4, Issue 2,   Pages 178-195 doi: 10.1007/s11709-010-0023-4

Abstract: The simplified procedure using shear wave velocity measurements is increasingly used to evaluate theThis paper develops a simple method for evaluating the liquefaction potential of soils from shear wavefactors considered are the earthquake magnitude, the vertical effective overburden stress, the shear waveThe most important factor has been identified as the shear wave velocity.The developed method uses the measured data directly and in a very simple way.

Keywords： liquefaction     earthquake     simple method     shear wave velocity     case history introduction    

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Time reversal method for guided wave inspection in pipes

DENG Fei, WU Bin, HE Cunfu

Frontiers of Mechanical Engineering 2008, Volume 3, Issue 3,   Pages 251-260 doi: 10.1007/s11465-008-0050-1

Abstract: The application of the time reversal method in pipe-like structures based on finite element method (FEMratio of a guided wave inspection system.In parallel, a circumferential locating method based on the time reversal method is described.The time reversal process used for guided wave inspection leads to the temporal and spatial focusing.Except for a pipe with one defect, the circumferential locating method has been verified on another pipe

Keywords： reversal process     beneficial     circumferential location     energy     number    

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A Stoneley wave method to detect interlaminar damage of metal layer composite pipe

Bing LI,Lei QIANG,Tong LU,Xu GENG,Minghang LI

Frontiers of Mechanical Engineering 2015, Volume 10, Issue 1,   Pages 89-94 doi: 10.1007/s11465-015-0323-4

Abstract: In this paper, a Stoneley wave method is presented to detect interlaminar damage in laminated pipe structureStoneley wave possesses some good characteristics, such as high energy and large displacement at theAdditionally, as the frequency increases, the wavelength of the Stoneley wave reduces.propagation of Lamb waves and Stoneley wave, respectively.The simulation examples demonstrate that the Stoneley wave method can better identify the interlaminar

Keywords： Stoneley wave     interlaminar damage     metal laminated pipe    

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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: by the buried rectangular and rib optical waveguides are obtained using variable transformed series expansionmethod.The infinite x-y plane is mapped into a unit square by an elegant tangent-type variable transformationIn addition, small matrix derived from this method promotes the computational efficiency.

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

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Experimental verification of the interface wave method to detect interlaminar damage of a metal multilayer

Bing LI,Xu GENG,Tong LU,Lei QIANG,Minghang LI

Frontiers of Mechanical Engineering 2015, Volume 10, Issue 4,   Pages 380-391 doi: 10.1007/s11465-015-0365-7

Abstract: The feasibility of this method is also verified.First, the wave velocity and wave structure of Stoneley waves at a perfectly bonded aluminum-steel interfaceare obtained by solving the Stoneley wave dispersion equation of two elastic half-spaces.beam and to locate interlaminar cracks by referring to the Stoneley wave velocity and echo wave timeTherefore, Stoneley waves show great potential as a non-destructive inspection method of a multilayer

Keywords： crack localization     interface waves     Stoneley waves     interlaminar damage     multilayer structure    

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Seismic response of precast reinforced concrete wall subjected to cyclic in-plane and constant out-of-plane

Frontiers of Structural and Civil Engineering 2021, Volume 15, Issue 5,   Pages 1128-1143 doi: 10.1007/s11709-021-0753-5

Abstract: provides insight into the seismic behavior of a full-scale precast reinforced concrete wall under in-planecyclic loading combined with out-of-plane loading replicated by sand backfill to simulate the actualThe tested wall exhibited flexural cracks, owing to the high aspect ratio and considerable out-of-planeAn increase in aspect ratio leads to a reduction in in-plane capacity and an increase in drift.backfill density, which may be adopted to determine the in-plane yield capacity of the basement walls

Keywords： precast wall     basement wall     out-of-plane response     quasi-static test     sand backfill     seismic parameters    

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New computational treatment of optical wave propagation in lossywaveguides

Jian-xin ZHU,Guan-jie WANG

Frontiers of Information Technology & Electronic Engineering 2015, Volume 16, Issue 8,   Pages 646-653 doi: 10.1631/FITEE.1400406

Abstract: In this paper, the optical wave propagation in lossy waveguides is described by the Helmholtz equationwith the complex refractive-index, and the Chebyshev pseudospectral method is used to discretize theMeanwhile, an operator marching method, a one-way re-formulation based on the Dirichletto-Neumann (DtN

Keywords： Adjoint operator     Orthogonal     Chebyshev     Pseudospectral method     Dirichlet-to-Neumann map    

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Experimental investigation and ANN modeling on improved performance of an innovative method of usingheave response of a non-floating object for ocean wave energy conversion

Srinivasan CHANDRASEKARAN, Arunachalam AMARKARTHIK, Karuppan SIVAKUMAR, Dhanasekaran SELVAMUTHUKUMARAN, Shaji SIDNEY

Frontiers in Energy 2013, Volume 7, Issue 3,   Pages 279-287 doi: 10.1007/s11708-013-0268-4

Abstract: To convert wave energy into usable forms of energy by utilizing heaving body, heaving bodies (buoys)The wave exerts excess buoyancy force on the buoy, lifting it during the approach of wave crest whilethe gravity pulls it down during the wave trough.Though using a floating buoy for harnessing wave energy is conventional, this device faces many challengesIn the present paper, an innovative heaving body type of wave energy converter with a non-floating object

Keywords： ocean wave energy     point absorbers     heaving body     non-floating object     heave response ratio     artificial neural    

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Dynamic in-plane transversal normal stresses in the concrete face of CFRD

Neftalí SARMIENTO-SOLANO, Miguel P. ROMO

Frontiers of Structural and Civil Engineering 2019, Volume 13, Issue 1,   Pages 135-148 doi: 10.1007/s11709-018-0481-7

Abstract: Face Rockfill Dams (CFRDs) such as concrete cracking and joint's water stops distressing where high in-planeThe procedure is the dynamic complement of a method recently developed to evaluate in-plane transversalUsing these two procedures in a sequential manner, it is possible to define the concrete slab in-planeIn the above reference, the method to evaluate the concrete face in-plane transversal normal stressesIn this paper, the seismic procedure is first developed and then through an example the whole method

Keywords： CFR dams     dynamic analysis     in-plane normal stresses     concrete face    

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Ribbon bridge in waves based on hydroelasticity theory

Cong WANG, Shixiao FU, Weicheng CUI

Frontiers of Structural and Civil Engineering 2009, Volume 3, Issue 1,   Pages 57-62 doi: 10.1007/s11709-009-0005-6

Abstract: This paper investigated the hydroelastic performances of a ribbon bridge under wave action.3D hydroelasticity theory, the hydroelastic behavior of the ribbon bridge modeled by finite element method(FEM) was analyzed by employing the mode superposition method.It is found that the present method is applicable and adaptable for predicting the hydroelastic response

Keywords： hydroelasticity     ribbon bridge     wave     finite element method (FEM)    

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Out-of-plane elastic buckling load and strength design of space truss arch with a rectangular section

Senping WANG; Xiaolong LIU; Bo YUAN; Minjie SHI; Yanhui WEI

Frontiers of Structural and Civil Engineering 2022, Volume 16, Issue 9,   Pages 1141-1152 doi: 10.1007/s11709-022-0866-5

Abstract: The out-of-plane stability of the two-hinged space truss circular arch with a rectangular section isThe calculation formula of out-of-plane elastic buckling loads of the space truss arch is derived basedon the classical solution of out-of-plane flexural-torsional buckling loads of the solid web arch.cannot be used for the calculation of the arch with a small rise-span ratio, the formula for out-of-planeNumerical research of the out-of-plane stability of space truss arches under different load cases shows

Keywords： torsional stiffness     strength design     elastic buckling     space truss arches     out-of-plane    

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Title Author Date Type Operation

Existence of complete band gaps in 2D steel-water phononic crystal with square lattice

Cunfu HE, Huanyu ZHAO, Ruiju WEI, Bin WU

Journal Article

On subsurface box-shaped lined tunnel under incident SH-wave propagation

Journal Article

Finite element analysis of creep for plane steel frames in fire

Hui ZHU, Yuching WU

Journal Article

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

Journal Article

A simple method for evaluating liquefaction potential from shear wave velocity

Lianyang ZHANG,

Journal Article

Time reversal method for guided wave inspection in pipes

DENG Fei, WU Bin, HE Cunfu

Journal Article

A Stoneley wave method to detect interlaminar damage of metal layer composite pipe

Bing LI,Lei QIANG,Tong LU,Xu GENG,Minghang LI

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

Experimental verification of the interface wave method to detect interlaminar damage of a metal multilayer

Bing LI,Xu GENG,Tong LU,Lei QIANG,Minghang LI

Journal Article

Seismic response of precast reinforced concrete wall subjected to cyclic in-plane and constant out-of-plane

Journal Article

New computational treatment of optical wave propagation in lossywaveguides

Jian-xin ZHU,Guan-jie WANG

Journal Article

Experimental investigation and ANN modeling on improved performance of an innovative method of usingheave response of a non-floating object for ocean wave energy conversion

Srinivasan CHANDRASEKARAN, Arunachalam AMARKARTHIK, Karuppan SIVAKUMAR, Dhanasekaran SELVAMUTHUKUMARAN, Shaji SIDNEY

Journal Article

Dynamic in-plane transversal normal stresses in the concrete face of CFRD

Neftalí SARMIENTO-SOLANO, Miguel P. ROMO

Journal Article

Ribbon bridge in waves based on hydroelasticity theory

Cong WANG, Shixiao FU, Weicheng CUI

Journal Article

Out-of-plane elastic buckling load and strength design of space truss arch with a rectangular section

Senping WANG; Xiaolong LIU; Bo YUAN; Minjie SHI; Yanhui WEI

Journal Article