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Conformal analysis of fundamental frequency of vibration of elastic clamped plates

QI Hongyuan, ZHU Hengjun

Frontiers of Mechanical Engineering 2007, Volume 2, Issue 4,   Pages 429-432 doi: 10.1007/s11465-007-0073-z

Abstract: To calculate the fundamental frequency of vibration of special-shaped and elastic clamped plates, theconformal mapping theory is adopted to separate the interpolating points of a complicated boundary intoFinally, taking ellipse elastic clamped plates as an example, the effects on fundamental frequency coefficient

Keywords： direction     theory     vibration     odd     complicated boundary    

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Power performance of circular piezoelectric diaphragm generators

TANG Kehong, KAN Junwu, YANG Zhigang, CHENG Guangming, PENG Taijiang

Frontiers of Mechanical Engineering 2008, Volume 3, Issue 4,   Pages 434-440 doi: 10.1007/s11465-008-0069-3

Abstract: performance of a piezoelectric generator depends mainly on several elements such as the structural style, boundarySimply supported and clamped boundary conditions were considered.Given the correlative material parameters and boundary conditions, the output power, using structuralpiezoelectric diaphragm generator with given dimensions tends to achieve higher output power under clampedboundary conditions than that under simply supported boundary conditions.

Keywords： clamped boundary     energy-harvesting     composite diaphragm     piezoelectric composite     maximum    

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Fundamental frequency and testing mode of complicated elastic clamped-plate vibration

QI Hongyuan, GUAN Yiduo

Frontiers of Mechanical Engineering 2008, Volume 3, Issue 4,   Pages 360-364 doi: 10.1007/s11465-008-0084-4

Abstract: Aimed at the modal analysis of complicated elastic clamped-plates, a trigonometric interpolation methodsignal processing technology and its software programming, modal parameter recognition of the elastic clamped-plate

Keywords： multi-point excitation     rectangle-plate     single-point     processing technology     trigonometric interpolation    

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Chemically reactive solute transfer in a boundary layer slip flow along a stretching cylinder

Swati Mukhopadhyay

Frontiers of Chemical Science and Engineering 2011, Volume 5, Issue 3,   Pages 385-391 doi: 10.1007/s11705-011-1101-4

Abstract: the distribution of a solute undergoing a first order chemical reaction in an axisymmetric laminar boundaryVelocity slip condition at the boundary is used instead of no-slip condition.

Keywords： boundary layer     stretching cylinder     partial slip     mass transfer     similarity solution    

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Controlling nested wrinkle morphology through the boundary effect on narrow-band thin films

Hanyang XU, Tielin SHI, Guanglan LIAO, Qi XIA

Frontiers of Mechanical Engineering 2019, Volume 14, Issue 2,   Pages 235-240 doi: 10.1007/s11465-017-0458-6

Abstract: nano-scale wrinkles and the highly ordered morphology of micro-scale wrinkles were explained by using the boundary

Keywords： nested and hierarchical wrinkles     morphology     amplitude saturation     boundary effect    

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Approaching the upper boundary of driver-response relationships: identifying factors using a novel framework

Frontiers of Environmental Science & Engineering 2023, Volume 17, Issue 6, doi: 10.1007/s11783-023-1676-2

Abstract:

● A novel framework integrating quantile regression with machine learning is proposed.

Keywords： Driver-response     Upper boundary of relationship     Interpretable machine learning     Quantile regression    

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Comparison of indirect boundary element and finite element methods A case study: Shiraz-Esfahan railway

Amin MANOUCHEHRIAN, Mohammad Fatehi MARJI, Mohsen MOHEBBI

Frontiers of Structural and Civil Engineering 2012, Volume 6, Issue 4,   Pages 385-392 doi: 10.1007/s11709-012-0173-7

Abstract: such as finite element method (FEM), discrete element method (DEM), finite difference method (FDM) and boundaryThis paper suggests the implementation of the indirect boundary element method (IBEM) as a formulationIn rock mechanics, for problems with a low ratio of boundary surface to volume, FEM is not very well

Keywords： indirect boundary element method     finite element method     displacement     tunnel     case study    

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Engineering the grain boundary: a promising strategy to configure NiCoPO/NiCoP nanowire arrays for ultra-stable

Frontiers of Chemical Science and Engineering 2022, Volume 16, Issue 8,   Pages 1259-1267 doi: 10.1007/s11705-021-2132-0

Abstract: NiCoP4O12/NiCoP nanorod-like arrays with tunable grain boundary density and pores

Keywords： NiCo     array electrode     grain boundary     stability     supercapacitor    

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Slender reinforced concrete shear walls with high-strength concrete boundary elements

Frontiers of Structural and Civil Engineering 2023, Volume 17, Issue 1,   Pages 138-151 doi: 10.1007/s11709-022-0897-y

Abstract: HSC was incorporated in the boundary elements of the wall to compare its performance with that of thePotential reductions in the reinforcement area and size of the boundary elements were investigated.and stiffness, and thereby, allowed reduction in the longitudinal reinforcement area and size of the boundaryCold joints resulting from dissimilar concrete pours in the web and boundary elements of the HSC wall

Keywords： slender walls     high-strength concrete     rectangular and barbell-shaped walls     cold joints    

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A Novel PWM Method of Diode-clamped Multilevel Inverter at Low Modulation Indices

Xin Xiang,Zhang Qingfan,Hu Shunquan,Li Ruilai

Strategic Study of CAE 2007, Volume 9, Issue 10,   Pages 91-96

Abstract:

Diode-clamped multilevel inverter is a kind of power converter which

Keywords： diode-clamped inverter     carrier-based PWM     low modulation index     redundant state    

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Hydrologic experiments and modeling of two laboratory bioretention systems under different boundary conditions

Ruifen Liu, Elizabeth Fassman-Beck

Frontiers of Environmental Science & Engineering 2017, Volume 11, Issue 4, doi: 10.1007/s11783-017-0951-5

Abstract: Hydrologic performance of bioretention systems is significantly influenced by the media composition and underdrain configuration. This research measured hydrologic performance of column-scale bioretention systems during a synthetic design storm of 25.9 mm, assuming a system area:catchment area ratio of 5%. The laboratory experiments involved two different engineered media and two different drainage configurations. Results show that the two engineered media with different sand aggregates were able to retain about 36% of the inflow volume with free drainage configuration. However, the medium with marine sand is better at delaying the occurrence of drainage than the one with pumice sand, denoting the better detention ability of the former. For both engineered media, an underdrain configuration with internal water storage (IWS) zone lowered drainage volume and peak drainage rate as well as delayed the occurrence of drainage and peak drainage rate, as compared to a free drainage configuration. The USEPA SWMM v5.1.11 model was applied for the free drainage configuration case, and there is a reasonable fit between observed and modeled drainage-rates when media-specific characteristics are available. For the IWS drainage configuration case, air entrapment was observed to occur in the engineered medium with marine sand. Filling of an IWS zone is most likely to be influenced by many factors, such as the structure of the bioretention system, medium physical and hydraulic properties, and inflow characteristics. More research is needed on the analysis and modeling of hydrologic process in bioretention with IWS drainage configuration.

Keywords： Bioretention     Hydrologic process     Underdrain configuration     SWMM     Modeling    

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Influence of boundary conditions and turntable speeds on the stability of hydrostatic oil cavity

Zhaomiao LIU, Chengyin ZHANG, Feng SHEN

Frontiers of Mechanical Engineering 2011, Volume 6, Issue 3,   Pages 359-368 doi: 10.1007/s11465-011-0222-2

Abstract: numerically simulated, considering the rotation speeds of a turntable from 0 to 5 m/s and different boundary

Keywords： hydrostatic oil cavity     flow state     oil cavity pressure     stability     vortex    

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Implementation of sinh method in integration space for boundary integrals with near singularity in potential

Guizhong XIE,Dehai ZHANG,Jianming ZHANG,Fannian MENG,Wenliao DU,Xiaoyu WEN

Frontiers of Mechanical Engineering 2016, Volume 11, Issue 4,   Pages 412-422 doi: 10.1007/s11465-016-0396-8

Abstract:

As a widely used numerical method, boundary element method (BEM) is efficient for computer aided engineeringHowever, boundary integrals with near singularity need to be calculated accurately and efficiently toedge by solving a cubic equation if the location of the projection point is outside the element, where boundaryResults demonstrate that our method is effective for regularizing the boundary integrals with near singularity

Keywords： computer aided engineering (CAE)     boundary element method (BEM)     near singularity     sinh method     coordinate    

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A new meshless approach for bending analysis of thin plates with arbitrary shapes and boundary conditions

Frontiers of Structural and Civil Engineering 2022, Volume 16, Issue 1,   Pages 75-85 doi: 10.1007/s11709-021-0798-5

Abstract: integration is needed, while the unknown coefficients of deflection expression could be determined through boundaryand accuracy of the approach are shown through numerical results of plates with arbitrary shapes and boundary

Keywords： plate     bending     meshless method     collocation    

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A way to explain the thermal boundary effects on laminar convection through a square duct

Liangbi WANG, Xiaoping GAI, Kun HUANG, Yongheng ZHANG, Xiang YANG, Xiang WU

Frontiers in Energy 2010, Volume 4, Issue 4,   Pages 496-506 doi: 10.1007/s11708-010-0020-2

Abstract: the reformulation of the energy conservation equation in terms of heat flux to explain the thermal boundaryon the wall surface, the velocity is zero, but convection occurs for uniform wall heat flux (UWHF) boundaryin the developing region due to the velocity gradient term; for uniform wall temperature (UWT) boundaryThe thermal boundary effects on the laminar convection inside the flow are also detailed.

Keywords： convective transport     heat transfer     mass transfer     laminar flow     thermal boundary effects    

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Title Author Date Type Operation

Conformal analysis of fundamental frequency of vibration of elastic clamped plates

QI Hongyuan, ZHU Hengjun

Journal Article

Power performance of circular piezoelectric diaphragm generators

TANG Kehong, KAN Junwu, YANG Zhigang, CHENG Guangming, PENG Taijiang

Journal Article

Fundamental frequency and testing mode of complicated elastic clamped-plate vibration

QI Hongyuan, GUAN Yiduo

Journal Article

Chemically reactive solute transfer in a boundary layer slip flow along a stretching cylinder

Swati Mukhopadhyay

Journal Article

Controlling nested wrinkle morphology through the boundary effect on narrow-band thin films

Hanyang XU, Tielin SHI, Guanglan LIAO, Qi XIA

Journal Article

Approaching the upper boundary of driver-response relationships: identifying factors using a novel framework

Journal Article

Comparison of indirect boundary element and finite element methods A case study: Shiraz-Esfahan railway

Amin MANOUCHEHRIAN, Mohammad Fatehi MARJI, Mohsen MOHEBBI

Journal Article

Engineering the grain boundary: a promising strategy to configure NiCoPO/NiCoP nanowire arrays for ultra-stable

Journal Article

Slender reinforced concrete shear walls with high-strength concrete boundary elements

Journal Article

A Novel PWM Method of Diode-clamped Multilevel Inverter at Low Modulation Indices

Xin Xiang,Zhang Qingfan,Hu Shunquan,Li Ruilai

Journal Article

Hydrologic experiments and modeling of two laboratory bioretention systems under different boundary conditions

Ruifen Liu, Elizabeth Fassman-Beck

Journal Article

Influence of boundary conditions and turntable speeds on the stability of hydrostatic oil cavity

Zhaomiao LIU, Chengyin ZHANG, Feng SHEN

Journal Article

Implementation of sinh method in integration space for boundary integrals with near singularity in potential

Guizhong XIE,Dehai ZHANG,Jianming ZHANG,Fannian MENG,Wenliao DU,Xiaoyu WEN

Journal Article

A new meshless approach for bending analysis of thin plates with arbitrary shapes and boundary conditions

Journal Article

A way to explain the thermal boundary effects on laminar convection through a square duct

Liangbi WANG, Xiaoping GAI, Kun HUANG, Yongheng ZHANG, Xiang YANG, Xiang WU

Journal Article