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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 frictionof static friction and the load.In 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.

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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Effect of friction coefficients on the dynamic response of gear systems

Lingli JIANG, Zhenyong DENG, Fengshou GU, Andrew D. BALL, Xuejun LI

Frontiers of Mechanical Engineering 2017, Volume 12, Issue 3,   Pages 397-405 doi: 10.1007/s11465-017-0415-4

Abstract: The change in the lubrication conditions is modeled by the changes in the friction coefficients, therebydemonstrated by the mean and root mean square values calculated by the simulated responses under different frictioncoefficients.

Keywords： dynamic response     friction coefficient     wind loads     wind turbine gearbox    

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Testing development of different surface treatments on pervious concrete

Mina YEKKALAR,Liv HASELBACH,Quinn LANGFITT

Frontiers of Structural and Civil Engineering 2016, Volume 10, Issue 4,   Pages 385-393 doi: 10.1007/s11709-016-0351-0

Abstract: pervious concrete specimens both qualitatively from personal judgements, and quantitatively through staticfriction measurements with a spring balance with respect to “slipperiness”.that the spring balance test may be an acceptable methodology for comparative analyses with respect to staticfriction.

Keywords： pervious concrete     static coefficient of friction     pedestrian    

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Experimental study of aerodynamic interference effects on aerostatic coefficients of twin deck bridges

Zhiwen LIU , Zhengqing CHEN , Gao LIU , Xinpeng SHAO ,

Frontiers of Structural and Civil Engineering 2009, Volume 3, Issue 3,   Pages 292-298 doi: 10.1007/s11709-009-0048-8

Abstract: The aerodynamic interference effects on aerostatic coefficients of twin deck bridges with large spanchanged during the wind tunnel test to study the effects on aerodynamic interferences of aerostatic coefficientsThe research results have shown that the drag coefficients of the leeward deck are much smaller thanThe drag coefficients of a windward deck decrease slightly compared with that of a single deck.And the aerodynamic interference effects on lift and torque coefficients of twin decks can be neglected

Keywords： twin decks     aerodynamic interference effects     aerostatic coefficients     wind tunnel test    

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Calculations of narrow-band transimissities and the Planck mean absorption coefficients of real gases

Huaqiang CHU, Mingyan GU, Huaichun ZHOU, Fengshan LIU

Frontiers in Energy 2014, Volume 8, Issue 1,   Pages 41-48 doi: 10.1007/s11708-013-0292-4

Abstract: The Planck mean absorption coefficients of CO , H O, CO, and CH in the temperature range of 300 to 2500The SNB model was also used to calculate the Planck mean absorption coefficients of these four radiating

Keywords： transimissity     HITEMP     HITRAN     Planck mean absorption coefficients    

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Analysis of nonlinear channel friction inverse problem

CHENG Weiping, LIU Guohua

Frontiers of Structural and Civil Engineering 2007, Volume 1, Issue 2,   Pages 205-210 doi: 10.1007/s11709-007-0024-0

Abstract: decomposition (SVD) for general inverse matrices and the optimization algorithm are used to solve the channel frictionThe resolution and covariance friction inverse model in matrix form is developed to examine the reliability

Keywords： singular     SVD     second-order     covariance     Theoretical    

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A Comparative Study of Friction Self-Piercing Riveting and Self-Piercing Riveting of Aluminum Alloy AA5182 Article

Yunwu Ma,He Shan,Sizhe Niu,Yongbing Li,Zhongqin Lin,Ninshu Ma

Engineering 2021, Volume 7, Issue 12,   Pages 1741-1750 doi: 10.1016/j.eng.2020.06.015

Abstract:

In this paper, self-piercing riveting (SPR) and friction self-piercing riveting (F-SPR) processesout to compare the two processes in terms of joint macrogeometry, tooling force, microhardness, quasi-staticbonding enhanced the F-SPR joint stiffness under lap-shear loading, which contributed to the higher quasi-static

Keywords： Self-piercing riveting     Friction self-piercing riveting     Mechanical joining     Quasi-static strength     Fatigue    

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Effects of leakage and friction on the miniaturization of a Wankel compressor

Yilin ZHANG, Wen WANG

Frontiers in Energy 2011, Volume 5, Issue 1,   Pages 83-92 doi: 10.1007/s11708-010-0125-7

Abstract: The discussion is related to the effect of leakage and friction on the design limit (cooling capacityThe largest friction originates from the clearance among the end face of the eccentric shaft, the end

Keywords： meso-scale     Wankel compressor     leakage     friction    

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Interactive DE for solving combined security environmental economic dispatch considering FACTS technology

Belkacem MAHDAD, K. SRAIRI, B. TAREK

Frontiers in Energy 2013, Volume 7, Issue 4,   Pages 429-447 doi: 10.1007/s11708-013-0270-x

Abstract: This paper presents an efficient interactive differential evolution (IDE) to solve the multi-objectiveemissions, while the second is a reactive power planning (RPP) using multi shunt FACTS device based static

Keywords： optimal power flow (OPF)     economic dispatch     environment     differential evolution     migration operator     multi-objective     flexible AC transmission systems (FACTS)     static VAR compensator (SVC)    

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Measurement of activity coefficients at infinite dilution for hydrocarbons in imidazolium-based ionic

ZHU Jiqin, YU Yanmei, CHEN Jian, FEI Weiyang

Frontiers of Chemical Science and Engineering 2007, Volume 1, Issue 2,   Pages 190-194 doi: 10.1007/s11705-007-0035-3

Abstract: Activity coefficients γ at infinite dilution of a solute in ionic liquid are generally used in the selectionActivity coefficients at infinite dilution of hydrocarbon solutes, such as alkanes, hexenes, alkylbenzenesThe quantitative relations among the computed structure parameters and activity coefficients at infinite

Keywords： cost-saving     consistent     coefficient     measurement     separating    

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A multi-probe micro-fabrication apparatus based on the friction-induced fabrication method

Zhijiang WU, Chenfei SONG, Jian GUO, Bingjun YU, Linmao QIAN

Frontiers of Mechanical Engineering 2013, Volume 8, Issue 4,   Pages 333-339 doi: 10.1007/s11465-013-0276-4

Abstract:

A novel multi-probe micro-fabrication apparatus was developed based on the friction-induced fabricationCombining the friction-induced scanning with selective etching in KOH solution, various micro-patternsefficiency fabrication device, the multi-probe micro-fabrication apparatus may encourage the development of friction-induced

Keywords： friction-induced fabrication     silicon     surface texture     friction     multi-probe    

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Tuned reactive power dispatch through modified differential evolution technique

S. BISWAS (RAHA), N. CHAKRABORTY

Frontiers in Energy 2012, Volume 6, Issue 2,   Pages 138-147 doi: 10.1007/s11708-012-0188-8

Abstract: This paper explores the capability of modified differential evolution (MDE) technique for solving theThe proposed method is based on the basic differential evolution (DE) technique with a few modifications

Keywords： reactive power dispatch (RPD)     modified differential evolution (MDE)     differential evolution algorithm    

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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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Review of MEMS differential scanning calorimetry for biomolecular study

Shifeng YU, Shuyu WANG, Ming LU, Lei ZUO

Frontiers of Mechanical Engineering 2017, Volume 12, Issue 4,   Pages 526-538 doi: 10.1007/s11465-017-0451-0

Abstract:

Differential scanning calorimetry (DSC) is one of the few techniques that allow direct determination

Keywords： differential scanning calorimetry     biomolecule     MEMS     thermodynamic    

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Air-side heat transfer and friction characteristics of biofouled evaporator under wet conditions

Hui PU, Guoliang DING, Xiaokui MA, Haitao HU, Yifeng GAO,

Frontiers in Energy 2010, Volume 4, Issue 3,   Pages 306-312 doi: 10.1007/s11708-009-0067-0

Abstract: The effects of biofouling on air-side heat transfer and friction characteristics under wet conditionscondition of the biofouled area ratio of 60% at the inlet air velocity of 2.0m/s; The ranges of friction

Keywords： finned tube     evaporator     fouling     heat transfer     friction    

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Title Author Date Type Operation

Expressions for Differential and Apparent Coefficients of Static Friction

Wang Weiyuan

Journal Article

Effect of friction coefficients on the dynamic response of gear systems

Lingli JIANG, Zhenyong DENG, Fengshou GU, Andrew D. BALL, Xuejun LI

Journal Article

Testing development of different surface treatments on pervious concrete

Mina YEKKALAR,Liv HASELBACH,Quinn LANGFITT

Journal Article

Experimental study of aerodynamic interference effects on aerostatic coefficients of twin deck bridges

Zhiwen LIU , Zhengqing CHEN , Gao LIU , Xinpeng SHAO ,

Journal Article

Calculations of narrow-band transimissities and the Planck mean absorption coefficients of real gases

Huaqiang CHU, Mingyan GU, Huaichun ZHOU, Fengshan LIU

Journal Article

Analysis of nonlinear channel friction inverse problem

CHENG Weiping, LIU Guohua

Journal Article

A Comparative Study of Friction Self-Piercing Riveting and Self-Piercing Riveting of Aluminum Alloy AA5182

Yunwu Ma,He Shan,Sizhe Niu,Yongbing Li,Zhongqin Lin,Ninshu Ma

Journal Article

Effects of leakage and friction on the miniaturization of a Wankel compressor

Yilin ZHANG, Wen WANG

Journal Article

Interactive DE for solving combined security environmental economic dispatch considering FACTS technology

Belkacem MAHDAD, K. SRAIRI, B. TAREK

Journal Article

Measurement of activity coefficients at infinite dilution for hydrocarbons in imidazolium-based ionic

ZHU Jiqin, YU Yanmei, CHEN Jian, FEI Weiyang

Journal Article

A multi-probe micro-fabrication apparatus based on the friction-induced fabrication method

Zhijiang WU, Chenfei SONG, Jian GUO, Bingjun YU, Linmao QIAN

Journal Article

Tuned reactive power dispatch through modified differential evolution technique

S. BISWAS (RAHA), N. CHAKRABORTY

Journal Article

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

Journal Article

Review of MEMS differential scanning calorimetry for biomolecular study

Shifeng YU, Shuyu WANG, Ming LU, Lei ZUO

Journal Article

Air-side heat transfer and friction characteristics of biofouled evaporator under wet conditions

Hui PU, Guoliang DING, Xiaokui MA, Haitao HU, Yifeng GAO,

Journal Article