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Icing tunnel experimental study of the static pressure detector

Peng Youxin,Zheng Li,Lin Guiping

Strategic Study of CAE 2009, Volume 11, Issue 11,   Pages 51-55

Abstract:

This work presented experimental approach of studying static pressuredetector in an icing tunnel.The main topics are: the experimental items of the detector in the icing tunnel, the experimental conditionsAccording to the features of the icing tunnel, the experimental results of the detector and some suggestion

Keywords： static pressure detector     icing tunnel experiment     anti-ice    

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Combined static mixers for high viscous fluids mixing

Zhenhao XI, Weizhen SUN, Ling ZHAO, Zhaoyan LIU

Frontiers of Chemical Science and Engineering 2009, Volume 3, Issue 1,   Pages 93-96 doi: 10.1007/s11705-009-0112-x

Abstract: A new static mixer Cross-over-Disc has been invented to strip off the boundary layer and to make strongThe pressure drop of Cross-over-Disc is 12—26 times as large as that of empty pipe with equivalent diameterFurthermore, mixing inhomogeneity for a combination of static mixing elements (four from Cross-over-Discand three pairs from Sulzer-type) can be decreased to 2.1%—3.1% within a reasonable range of pressure

Keywords： static mixer     Cross-over-Disc     pressure drop     mixing performance     high viscous fluid    

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Development of an axial-type fan with an optimization method

Chong-hyun CHO, Soo-yong CHO, Chaesil KIM,

Frontiers in Energy 2009, Volume 3, Issue 4,   Pages 414-422 doi: 10.1007/s11708-009-0038-5

Abstract: An axial-type fan that operates at a relative total pressure of 671Pa and a static pressure ofThe total and static pressure are applied to the restriction condition with the operating flowrate on

Keywords： axial-type fan     gradient method     free-vortex method     design variable     total pressure     static pressure     operating    

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prediction of thin tube using strain energy density as a function of stress triaxiality under quasi-static

Tahir MAHMOOD, Sangarapillai KANAPATHIPILLAI, Mahiuddin CHOWDHURY

Frontiers of Mechanical Engineering 2013, Volume 8, Issue 2,   Pages 181-186 doi: 10.1007/s11465-013-0257-7

Abstract:

This paper demonstrates the application of a new multiaxial creep damage model developed by authors using stress traixiality to predict the failure time of a component made of 0.5%Cr-0.5%Mo-0.25%V low alloy steel. The model employs strain energy density and assumes that the uniaxial strain energy density of a component can be easily calculated and can be converted to multi-axial strain energy density by multiplying it to a function of stress trixiality which is a ratio of mean stress to equivalent stress. For comparison, an elastic-creep and elastic-plastic-creep finite element analysis (FEA) is performed to get multi-axial strain energy density of the component which is compared with the calculated strain energy density for both cases. The verification and application of the model are demonstrated by applying it to thin tube for which the experimental data are available. The predicted failure times by the model are compared with the experimental results. The results show that the proposed model is capable of predicting failure times of the component made of the above-mentioned material with an accuracy of 4.0%.

Keywords： elastic-creep     elastic-plastic-creep     stress triaxiality     life prediction     pressure vessels     finite element    

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Damage detection in beam-like structures using static shear energy redistribution

Frontiers of Structural and Civil Engineering 2022, Volume 16, Issue 12,   Pages 1552-1564 doi: 10.1007/s11709-022-0903-4

Abstract: In this study, a static shear energy algorithm is presented for the damage assessment of beam-like structuresTherefore, the change in the static shear energy is employed to determine the damage locations in beam-likeThe static shear energy is derived from the spectral factorization of the elementary stiffness matrix

Keywords： damage detection     beam structure     strain energy     static displacement variation     energy damage index    

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Tetra-detector size exclusion chromatography characterization of molecular and solution properties of

Qingbin Guo,Sheng Chang

Frontiers of Environmental Science & Engineering 2017, Volume 11, Issue 2, doi: 10.1007/s11783-017-0922-x

Abstract: Tetra-detector HPSEC was evaluated for the SMP characterization Molecular weight and intrinsic viscosityof the SMP were characterized Specific viscosity and osmotic pressure of the SMP solution were studiedBased on the tetra-detector HPSEC determined absolute molecular weights and intrinsic viscosity, a universalTwo factors which can be derived from the tetra-detector HPSEC analysis were proposed for the characterizationof the viscous and osmotic pressure properties of the SMP polysaccharides.

Keywords： Soluble microbial product     Extracellular polymeric substance     Membrane bioreactor     Membrane fouling     Molecular weight     Intrinsic viscosity    

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Static balancing of planar articulated robots

Giuseppe QUAGLIA,Zhe YIN

Frontiers of Mechanical Engineering 2015, Volume 10, Issue 4,   Pages 326-343 doi: 10.1007/s11465-015-0355-9

Abstract:

Static balancing for a manipulator’s weight is necessary in terms of energy saving and performance

Keywords： robotics     static balancing     pneumatic spring     mechanical spring     torque compensation    

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Expressions for Differential and Apparent Coefficients of Static Friction

Wang Weiyuan

Strategic Study of CAE 2001, Volume 3, Issue 8,   Pages 29-32

Abstract:

Recently, scientists and engineers are interested in coefficients of static friction on micro andOn macro scale, the friction force is proportional to load, the apparent coefficients of static frictionIn this paper, from the definition of differential coefficients of static friction, the expressions fordifferential and apparent coefficients of static friction, 〓 and 〓 for several models are deduced.constant, 〓 is not a constant but proportional to P-1. 〓 is a constant only in high normal pressure

Keywords： differential coefficients of static friction     coefficients of static friction on micro or nano scale     apparentcoefficients of static friction     coefficients of static friction on macro scale    

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Distribution of background equivalent static wind load on high-rise buildings

Jianguo ZHANG , Ming GU ,

Frontiers of Structural and Civil Engineering 2009, Volume 3, Issue 3,   Pages 241-248 doi: 10.1007/s11709-009-0036-z

Abstract: distributions along the height of high-rise buildings and their correlations are obtained through simultaneous pressureenvelope (GLE) methods, are verified in terms of their accuracy in describing the background equivalent staticBased on the results, formulae of the distribution of background equivalent static load on high-rise

Keywords： high-rise buildings     along-wind     cross-wind     background equivalent static wind load     close formulae    

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Experimental study of two saturated natural soils and their saturated remoulded soils under three consolidated undrained stress paths

Mingjing JIANG, Haijun HU, Jianbing PENG, Serge LEROUEIL

Frontiers of Structural and Civil Engineering 2011, Volume 5, Issue 2,   Pages 225-238 doi: 10.1007/s11709-011-0108-8

Abstract: strain-hardening, is remarkably influenced by the structure, void ratio, stress path and confining pressureExcess pore pressure during shearing is significantly affected by stress path.loose sand on character of strain-softening and are different from common clay on excess pore water pressure

Keywords： stress paths     static liquefaction     natural soil     remoulded soil     loess     structure     total strength indices     excesspore pressure    

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Micromechanics model for static and dynamic strength of concrete under confinement

ZHENG Dan

Frontiers of Structural and Civil Engineering 2008, Volume 2, Issue 4,   Pages 329-335 doi: 10.1007/s11709-008-0044-4

Abstract: On the assumption that the micro fracture toughness of concrete does not vary with stain rate, the static

Keywords： comparison     different     interaction     pseudo-force     toughness    

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Evaluation of the static and dynamic structural performance of segmental pre-stressed concrete box girder

Ali Fadhil NASER, Zonglin WANG

Frontiers of Structural and Civil Engineering 2013, Volume 7, Issue 2,   Pages 164-177 doi: 10.1007/s11709-013-0196-8

Abstract: methods which are used to improve the structural performance of the bridge structure, to analyze the static

Keywords： structural performance     steel plates     external pre-stressing     cracks     grouting method     static    

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Characteristics of metal magnetic memory signals of different steels under static tension

Yiliang ZHANG, Ruibin GOU, Jimin LI, Gongtian SHEN,

Frontiers of Mechanical Engineering 2010, Volume 5, Issue 2,   Pages 226-232 doi: 10.1007/s11465-010-0012-2

Abstract: the characteristics of metal magnetic memory (MMM) signals of different steels during tensile test, static

Keywords： metal magnetic memory (MMM)     magnetic intensity (Hp)     static tension     weld    

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Peridynamics versus XFEM: a comparative study for quasi-static crack problems

Jinhai ZHAO, Hesheng TANG, Songtao XUE

Frontiers of Structural and Civil Engineering 2018, Volume 12, Issue 4,   Pages 548-557 doi: 10.1007/s11709-017-0434-6

Abstract: Peridynamics (PD) is a nonlocal continuum theory based on integro-differential equations without spatial derivatives. The fracture criterion is implicitly incorporated in the PD theory and fracture is a natural outcome of the simulation. However, capturing of complex mixed-mode crack patterns has been proven to be difficult with PD. On the other hand, the extended finite element method (XFEM) is one of the most popular methods for fracture which allows crack propagation with minimal remeshing. It requires a fracture criterion which is independent of the underlying discretization though a certain refinement is needed in order to obtain suitable results. This article presents a comparative study between XFEM and PD. Therefore, two examples are studied. The first example is crack propagation in a double notched specimen under uniaxial tension with different crack spacings in loading direction. The second example is the specimens with two center cracks. The results show that PD as well as XFEM are well suited to capture this type of behaviour.

Keywords： XFEM     peridynamic     bilateral crack     parallel double cracks     nonlocal theory    

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The relevance of James Lovelock’s research and philosophy to environmental science and academia

Frontiers of Environmental Science & Engineering 2023, Volume 17, Issue 3, doi: 10.1007/s11783-023-1639-7

Abstract: Lovelock is also remembered as the co-inventor of the electron capture detector that eventually allowed

Keywords： Academic independence     Climate change     Electron capture detector     Environmental equilibrium     Global warming    

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Title Author Date Type Operation

Icing tunnel experimental study of the static pressure detector

Peng Youxin,Zheng Li,Lin Guiping

Journal Article

Combined static mixers for high viscous fluids mixing

Zhenhao XI, Weizhen SUN, Ling ZHAO, Zhaoyan LIU

Journal Article

Development of an axial-type fan with an optimization method

Chong-hyun CHO, Soo-yong CHO, Chaesil KIM,

Journal Article

prediction of thin tube using strain energy density as a function of stress triaxiality under quasi-static

Tahir MAHMOOD, Sangarapillai KANAPATHIPILLAI, Mahiuddin CHOWDHURY

Journal Article

Damage detection in beam-like structures using static shear energy redistribution

Journal Article

Tetra-detector size exclusion chromatography characterization of molecular and solution properties of

Qingbin Guo,Sheng Chang

Journal Article

Static balancing of planar articulated robots

Giuseppe QUAGLIA,Zhe YIN

Journal Article

Expressions for Differential and Apparent Coefficients of Static Friction

Wang Weiyuan

Journal Article

Distribution of background equivalent static wind load on high-rise buildings

Jianguo ZHANG , Ming GU ,

Journal Article

Experimental study of two saturated natural soils and their saturated remoulded soils under three consolidated undrained stress paths

Mingjing JIANG, Haijun HU, Jianbing PENG, Serge LEROUEIL

Journal Article

Micromechanics model for static and dynamic strength of concrete under confinement

ZHENG Dan

Journal Article

Evaluation of the static and dynamic structural performance of segmental pre-stressed concrete box girder

Ali Fadhil NASER, Zonglin WANG

Journal Article

Characteristics of metal magnetic memory signals of different steels under static tension

Yiliang ZHANG, Ruibin GOU, Jimin LI, Gongtian SHEN,

Journal Article

Peridynamics versus XFEM: a comparative study for quasi-static crack problems

Jinhai ZHAO, Hesheng TANG, Songtao XUE

Journal Article

The relevance of James Lovelock’s research and philosophy to environmental science and academia

Journal Article