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Effects of Boundary Condition and Helix Angle on Meshing Performance of TI Worm Gearing

SUN Yue-hai, DUAN Lu-qian, WANG Shu-ren, ZHANG Ce

Frontiers of Mechanical Engineering 2006, Volume 1, Issue 1,   Pages 90-95 doi: 10.1007/s11465-005-0006-7

Abstract: state and contact area of tooth surface of toroidal involute (TI) worm gearing, the authors introduced boundarycondition into contact line analysis.With helix angle chosen as parameter, the criterion for the existenceof meshing boundary line on the surface of TI worm gearing is derived.Results show that there can be four situations for meshing boundary line on the tooth surface of gear, namely, inexistence of meshing boundary line, a unique line, two lines, and two coincident lines.

Keywords： preferable     inexistence     Results     validity     boundary condition    

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Study of an artificial boundary condition based on the damping-solvent extraction method

Qiang XU, Jianyun CHEN, Jing LI, Mingming WANG

Frontiers of Structural and Civil Engineering 2012, Volume 6, Issue 3,   Pages 281-287 doi: 10.1007/s11709-012-0167-5

Abstract: A new artificial boundary condition for time domain analysis of a structure-unlimited-foundation systemThe boundary condition was based on the damping-solvent extraction method.An artificial boundary condition was then established by setting two spring-damper systems and one artificialA test example was developed to verify that the proposed boundary condition and model had high precisionCompared with the damping-solvent extraction method, this boundary condition is easier to be applied

Keywords： damping-solvent extraction method     structure-unlimited-foundation system     spring-damper system     artificial damping limited region     finite element method    

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Ribbed strip rolling by three-dimensional finite element method combining extremely thin array of elements

Zhengyi JIANG,

Frontiers of Mechanical Engineering 2010, Volume 5, Issue 1,   Pages 52-60 doi: 10.1007/s11465-009-0087-9

Abstract: The formulation of the finite element modelling by adding a rib inclined contact surface boundary condition

Keywords： rib inclined contact boundary condition     ribbed strip     extremely thin elements     pulling down of rib height    

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An isogeometric numerical study of partially and fully implicit schemes for transient adjoint shape sensitivity analysis

Zhen-Pei WANG, Zhifeng XIE, Leong Hien POH

Frontiers of Mechanical Engineering 2020, Volume 15, Issue 2,   Pages 279-293 doi: 10.1007/s11465-019-0575-5

Abstract: that (i) the explicit approach ( = 0) and semi-implicit approach with <0.5 impose a strict stability conditionIt is recommended to use for unconditional stability, such that the oscillation condition is much less

Keywords： isogeometric shape optimization     design-dependent boundary condition     transient heat conduction     implicit    

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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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A review of condition-based maintenance: Its prognostic and operational aspects

Yanrong LI, Shizhe PENG, Yanting LI, Wei JIANG

Frontiers of Engineering Management 2020, Volume 7, Issue 3,   Pages 323-334 doi: 10.1007/s42524-020-0121-5

Abstract: Condition-based maintenance (CBM) detects early signs of failure and dictates when maintenance shouldbe performed based on the actual condition of a system.

Keywords： condition-based maintenance     prognostics     operational decision-making     reliability    

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Trend prediction technology of condition maintenance for large water injection units

Xiaoli XU, Sanpeng DENG

Frontiers of Mechanical Engineering 2010, Volume 5, Issue 2,   Pages 171-175 doi: 10.1007/s11465-009-0091-0

Abstract: Trend prediction technology is the key technology to achieve condition-based maintenance of mechanicalnormal operation of units and save maintenance costs, trend prediction technology is studied to achieve condition-basedindustrial site verification shows that the proposed trend prediction technology can reflect the operating conditiontrend change of the water injection units and provide technical means to achieve condition-based predictive

Keywords： water injection units     condition-based maintenance     trend prediction    

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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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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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Title Author Date Type Operation

Effects of Boundary Condition and Helix Angle on Meshing Performance of TI Worm Gearing

SUN Yue-hai, DUAN Lu-qian, WANG Shu-ren, ZHANG Ce

Journal Article

Study of an artificial boundary condition based on the damping-solvent extraction method

Qiang XU, Jianyun CHEN, Jing LI, Mingming WANG

Journal Article

Ribbed strip rolling by three-dimensional finite element method combining extremely thin array of elements

Zhengyi JIANG,

Journal Article

An isogeometric numerical study of partially and fully implicit schemes for transient adjoint shape sensitivity analysis

Zhen-Pei WANG, Zhifeng XIE, Leong Hien POH

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

A review of condition-based maintenance: Its prognostic and operational aspects

Yanrong LI, Shizhe PENG, Yanting LI, Wei JIANG

Journal Article

Trend prediction technology of condition maintenance for large water injection units

Xiaoli XU, Sanpeng DENG

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

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