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Lamb wave propagation modeling for structure health monitoring

Xiaoyue ZHANG, Shenfang YUAN, Tong HAO

Frontiers of Mechanical Engineering 2009, Volume 4, Issue 3,   Pages 326-331 doi: 10.1007/s11465-009-0045-6

Abstract: A number of different numerical computational techniques have been developed for wave propagation studiesin complex media (LISA/SIM theory), has been effectively applied to numerical simulations of elastic waveThe finite difference equations describing wave propagation used in the LISA/SIM theory are obtained.

Keywords： Lamb wave     modeling     LISA/SIM theory     finite difference equation     finite element    

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Simulation of Wave Propagation Over a Submerged Bar Using a Modified Boussinesq Equation

Zheng Yonghong,Shen Yongming,Wu Xiuguang,You Yage

Strategic Study of CAE 2004, Volume 6, Issue 4,   Pages 34-40

Abstract:

A modified Boussinesq equation is numerically studied.Comparison of numerical results with experimental data shows that the modified Boussinesq equation itselfThese results can give some theoretical guidance to the applications of Boussinesq equation to wave propagation

Keywords： modified Boussinesq equation     numerical simulation     wave propagation     submerged bar    

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Analyzing the nonlinear vibrational wave differential equation for the simplified model of Tower Cranes

M.R. AKBARI,D.D. GANJI,A.R. AHMADI,Sayyid H. Hashemi KACHAPI

Frontiers of Mechanical Engineering 2014, Volume 9, Issue 1,   Pages 58-70 doi: 10.1007/s11465-014-0289-7

Abstract: model of Tower Cranes has been presented in order to investigate and analyze the nonlinear differential equation

Keywords： Algebraic Method (AGM)     tower crane     oscillating system     angular frequency    

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Numerical Study on the Parabolic Mild-slope Equation

Shen Yongming,Zheng Yonghong,Wu Xiuguang

Strategic Study of CAE 2004, Volume 6, Issue 3,   Pages 30-35

Abstract: By numerical modeling wave transformation over four typical topographies, the accuracy of numerical schemesthe effect of grid number on the solution accuracy, the sensitiveness of the models to the incident waveresults can give some theoretical guidance to the applications of parabolic mild slope equations to wave

Keywords： parabolic mild-slope equation     numerical study     wave    

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The experimental study on the equation of state for polyester

Lin Peng,Wang Changli,Li Yan,Liu Wenxiang,Wang Dengwang

Strategic Study of CAE 2009, Volume 11, Issue 4,   Pages 63-66

Abstract:

The shock wave propagation characteristics of the polyester have beenmeasured by recording the shock wave profile produced by the impact of projectiles accelerated in aThe Hugoniot relation, expressed as the curve of shock wave velocity versus particle velocity, obtainedThe polynomial equation of state is obtained by regression of the experimental data and the Grüneisen

Keywords： polyester     equation of state     Hugoniot     the shock wave    

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Numerical Simulation of the Hyperbolic Mild Slope Equation

Tang Jun,Shen Yongming,Qiu Dahong

Strategic Study of CAE 2007, Volume 9, Issue 4,   Pages 70-74

Abstract:

The hyperbolic mild slope equation has been widely used as an effectivesystem that collocated in time and staged in space has been used to discretize the hyperbolic mild slope equationused in the paper can be effectively used in the numerical simulation of the hyperbolic mild slope equation

Keywords： wave model     hyperbolic mild slope equation     numerical simulation    

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Parametric analysis and design equation of ultimate capacity for unstiffened overlapped CHS K-joints

CHEN Yu, ZHAO Xianzhong, CHEN Yiyi

Frontiers of Structural and Civil Engineering 2008, Volume 2, Issue 2,   Pages 107-115 doi: 10.1007/s11709-008-0014-x

Abstract: The results of finite element parametric analysis indicate that the brace-to-chord thickness ratio hasFinally, based on the design equation of gap joints, a formula predicting the ultimate capacity of overlappedCHS K-joints was derived by applying multivariate regression analysis.Results from the proposed design equation are consistent with experimental results.

Keywords： regression analysis     consistent     unstiffened     plasticity     overlapped    

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Parametric equations for notch stress concentration factors of rib–deck welds under bending loading

Frontiers of Structural and Civil Engineering 2021, Volume 15, Issue 3,   Pages 595-608 doi: 10.1007/s11709-021-0720-1

Abstract: of rib–deck welds requires notch stress concentration factors obtained from complex finite element analysisThen, we performed a parametric analysis to investigate the effects of multiple geometric parametersOn this basis, the multiple linear stepwise regression analysis was performed to obtain the optimal regressionconcentration factors estimated from the developed formulas show agree well with the finite element analysis

Keywords： notch stress concentration factor     rib–deck weld     parametric analysis     regression analysis     parametricequation    

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Numerical Simulation of Pollutants Movement in Coastal Surf Zone

Tang Jun,Shen Yongming and Qiu Dahong

Strategic Study of CAE 2007, Volume 9, Issue 12,   Pages 63-68

Abstract: In coastal and offshore areas, the breakingwaveinduced currents induced as waves propagate obliquelyBased on parabolic mild slope equation for wave propagating in mild slope zones, the nearshore currents

Keywords： parabolic mild slope equation     surf zone     wave radiation stress     longshore currents     pollutants    

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Theoretical analysis and experimental investigation of valveless piezoelectric pump with unsymmetrical

ZHANG Jianhui, LU Jizhuang, XIA Qixiao, LI Hong

Frontiers of Mechanical Engineering 2007, Volume 2, Issue 1,   Pages 13-19 doi: 10.1007/s11465-007-0002-1

Abstract: by analyzing the vibration of the piezoelectric vibrator, the vibration deformation function and the equationMeanwhile, the theoretical equation of the pump flow rate is established.

Keywords： unsymmetrical     theoretical flow     theoretical equation     pump flow     converse flow    

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Imposing Active Sources during High-Frequency Passive Surface-Wave Measurement Article

Feng Cheng,Jianghai Xia,Chao Shen,Yue Hu,Zongbo Xu,Binbin Mi

Engineering 2018, Volume 4, Issue 5,   Pages 685-693 doi: 10.1016/j.eng.2018.08.003

Abstract: “mixed-source surface-wave (MSW) measurement.Spectral analysis indicates that the high-frequency energy is improved by imposing active sources duringcontinuous passive surface-wave observation.The spatial autocorrelation (SPAC) method and the multichannel analysis of passive surface waves (MAPSdemonstrate the flexibility and applicability of the proposed method for high-frequency phase velocity analysis

Keywords： Passive surface wave     Active surface wave     High frequency     Mixed-source surface wave     Spatial autocorrelation     Multichannel analysis of passive surface waves    

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A numerical wave model with weak nonlinearity and its application ability analysis

Liu Zhongbo,Tang Jun

Strategic Study of CAE 2010, Volume 12, Issue 9,   Pages 96-100

Abstract:

Based on the extended Boussinesq equation with weak nonlinearity, 2-DNumerical simulation was done upon one-dimension and two-dimension wave propagations problem, and through

Keywords： numerical model     application ability     wave    

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Drivability of Large Diameter Steel Cylinders during Hammer-Group Vibratory Installation for the Hong Kong–Zhuhai–Macao Bridge Article

W.J. Lu,B. Li,J.F. Hou,X.W. Xu,H.F. Zou,L.M. Zhang,

Engineering 2023, Volume 20, Issue 1,   Pages 180-191 doi: 10.1016/j.eng.2021.07.028

Abstract: cylinders in the HZMB is investigated based on geological surveys, field monitoring, and drivability analysis

Keywords： Hong Kong–Zhuhai–Macao Bridge     Vibratory pile driving     Wave equation analysis     Large-diameter steel cylinder    

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Shock wave of vapor-liquid two-phase flow

ZHAO Liangju, GAO Hong, TANG Jingwen, YUAN Yuexiang, WANG Fei

Frontiers in Energy 2008, Volume 2, Issue 3,   Pages 344-347 doi: 10.1007/s11708-008-0065-7

Abstract: The shock wave of vapor-liquid two-phase flow in a pressure-gain steam injector is studied by buildingThe analysis of available energy shows that the shock is an irreversible process with entropy increase

Keywords： available     mathematic     conform     vapor-liquid two-phase     analysis    

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Stable expression and control parameters in the numerical simulation of unsaturated flow

Zhiyuan ZHANG; Xu LI; Yongkang WU; Xiaokang LI

Frontiers of Structural and Civil Engineering 2022, Volume 16, Issue 12,   Pages 1501-1514 doi: 10.1007/s11709-022-0893-2

Abstract: The Richards’ equation describes the flow phenomenon in unsaturated porous media and is essential toThis study evaluated the numerical stability of two different forms of the Richards’ equation.Sensitivity analyses were performed to investigate the control parameters of the equation.saturation flows than the θ-form Richards’ equation.For the h-form Richards’ equation, the hydraulic conductivity of the soil in the low-suction range

Keywords： Richards’ equation     sensitivity analysis     unsaturated soil     hydraulic diffusivity     seepage simulation    

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Title Author Date Type Operation

Lamb wave propagation modeling for structure health monitoring

Xiaoyue ZHANG, Shenfang YUAN, Tong HAO

Journal Article

Simulation of Wave Propagation Over a Submerged Bar Using a Modified Boussinesq Equation

Zheng Yonghong,Shen Yongming,Wu Xiuguang,You Yage

Journal Article

Analyzing the nonlinear vibrational wave differential equation for the simplified model of Tower Cranes

M.R. AKBARI,D.D. GANJI,A.R. AHMADI,Sayyid H. Hashemi KACHAPI

Journal Article

Numerical Study on the Parabolic Mild-slope Equation

Shen Yongming,Zheng Yonghong,Wu Xiuguang

Journal Article

The experimental study on the equation of state for polyester

Lin Peng,Wang Changli,Li Yan,Liu Wenxiang,Wang Dengwang

Journal Article

Numerical Simulation of the Hyperbolic Mild Slope Equation

Tang Jun,Shen Yongming,Qiu Dahong

Journal Article

Parametric analysis and design equation of ultimate capacity for unstiffened overlapped CHS K-joints

CHEN Yu, ZHAO Xianzhong, CHEN Yiyi

Journal Article

Parametric equations for notch stress concentration factors of rib–deck welds under bending loading

Journal Article

Numerical Simulation of Pollutants Movement in Coastal Surf Zone

Tang Jun,Shen Yongming and Qiu Dahong

Journal Article

Theoretical analysis and experimental investigation of valveless piezoelectric pump with unsymmetrical

ZHANG Jianhui, LU Jizhuang, XIA Qixiao, LI Hong

Journal Article

Imposing Active Sources during High-Frequency Passive Surface-Wave Measurement

Feng Cheng,Jianghai Xia,Chao Shen,Yue Hu,Zongbo Xu,Binbin Mi

Journal Article

A numerical wave model with weak nonlinearity and its application ability analysis

Liu Zhongbo,Tang Jun

Journal Article

Drivability of Large Diameter Steel Cylinders during Hammer-Group Vibratory Installation for the Hong Kong–Zhuhai–Macao Bridge

W.J. Lu,B. Li,J.F. Hou,X.W. Xu,H.F. Zou,L.M. Zhang,

Journal Article

Shock wave of vapor-liquid two-phase flow

ZHAO Liangju, GAO Hong, TANG Jingwen, YUAN Yuexiang, WANG Fei

Journal Article

Stable expression and control parameters in the numerical simulation of unsaturated flow

Zhiyuan ZHANG; Xu LI; Yongkang WU; Xiaokang LI

Journal Article