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Evaluation of measurement uncertainty of the high-speed variable-slit system based on the Monte Carlo method

Yin ZHANG, Jianwei WU, Kunpeng XING, Zhongpu WEN, Jiubin TAN

Frontiers of Mechanical Engineering 2020, Volume 15, Issue 4,   Pages 517-537 doi: 10.1007/s11465-020-0589-z

Abstract: This paper presents a dynamic and static error transfer model and uncertainty evaluation method for aFirst, an error transfer model of the high-speed variable-slit system is established, and the influencecoefficients are calculated for each source of error associated with the accuracy of the blade motionThen, the maximum range of each error source is determined by simulation and experiment.The proposed model can evaluate the performance of the complex mechanical system and be used to guide

Keywords： air-floating guide rail     error transfer model     driving and following structure     dynamic error     uncertainty    

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Application of different CFD multiphase models to investigate effects of baffles and nanoparticles on heat transfer

Ali SHAHMOHAMMADI,Arezou JAFARI

Frontiers of Chemical Science and Engineering 2014, Volume 8, Issue 3,   Pages 320-329 doi: 10.1007/s11705-014-1437-7

Abstract: In this work, the effect of baffles in a pipe on heat transfer enhancement was studied using computationalTo find an accurate model for CFD simulations, the results obtained by the single phase were comparedIt was found that multiphase models could better predict the heat transfer in nanofluids.The effect of baffles on heat transfer of nanofluid flow was also investigated through a baffled geometryThe numerical results show that at Reynolds numbers in the range of 600 to 2100, the heat transfer of

Keywords： CFD simulation     heat transfer     nanofluid     baffle     single phase model     multiphase model    

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Financing Model Decision of Inter-basin Water Transfer Projects

Ji-wei Zhu,Li-nan Zhou,Zhao Zhai,Cong Wang

Frontiers of Engineering Management 2016, Volume 3, Issue 4,   Pages 396-403 doi: 10.15302/J-FEM-2016060

Abstract: Inter-basin Water Transfer Projects require the appropriate financing model to attract large amountsModel is established in this paper.First, the complex financing mode decision problems of Inter-basin Water Transfer Projects are decomposedThe Weighted Grey Target Model is used to calculate the approaching degree of financing model and assistsdecision of Inter-basin Water Transfer Projects.

Keywords： Inter-basin Water Transfer Projects     financing model     Weighted Grey Target Model     water diversion     Han River    

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Chord error constraint based integrated control strategy for contour error compensation

Tie ZHANG, Caicheng WU, Yanbiao ZOU

Frontiers of Mechanical Engineering 2020, Volume 15, Issue 4,   Pages 645-658 doi: 10.1007/s11465-020-0601-7

Abstract: position error compensator, is proposed.To reduce the contour error, a PI-type cross-coupling controller is designed, with its stability beinganalyzed by using the contour error transfer function.Moreover, a feed rate regulator based on the chord error constraint is proposed, which performs speedcompensation of tracking error.

Keywords： cross-coupling controller     contour error     tracking error     position error compensator     feed rate regulator    

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A simplified model of direct-contact heat transfer in desalination system utilizing LNG cold energy

Qingqing SHEN, Wensheng LIN, Anzhong GU, Yonglin JU

Frontiers in Energy 2012, Volume 6, Issue 2,   Pages 122-128 doi: 10.1007/s11708-012-0175-0

Abstract: A simplified model of the direct-contact heat transfer in this desalination system is proposed and theoreticalThe number density distribution of two-phase bubbles, the heat transfer between the two immiscible fluidssize of dispersed phase droplets, the initial temperature of continuous phase, and the volumetric heat transfer

Keywords： liquefied natural gas (LNG)     cold energy utilization     desalination     direct-contact heat transfer    

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A dynamic model of mobile concrete pump boom based on discrete time transfer matrix method

Wu REN, Yunxin WU, Zhaowei ZHANG

Frontiers of Mechanical Engineering 2013, Volume 8, Issue 4,   Pages 360-366 doi: 10.1007/s11465-013-0280-8

Abstract: A dynamics model of a mobile concrete pump boom is established based on discrete time transfer matrixIn the model, the booms and links are regarded as rigid elements and the hydraulic cylinders are equivalentThe overall dynamic equation and transfer matrix of the model can be assembled by sub-structures A andThe displacement and rotation angle curves of the proposed method fit well with the ADAMS model.

Keywords： multi-body     mobile concrete pump boom     discrete time transfer matrix method (DTTMM)     kinematic     dynamic     tip    

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Key point selection in large-scale FBG temperature sensors for thermal error modeling of heavy-duty CNC

Jianmin HU, Zude ZHOU, Quan LIU, Ping LOU, Junwei YAN, Ruiya LI

Frontiers of Mechanical Engineering 2019, Volume 14, Issue 4,   Pages 442-451 doi: 10.1007/s11465-019-0543-0

Abstract: Thermal error is one of the main factors that influence the machining accuracy of computer numericalIt is usually reduced by thermal error compensation.Temperature field monitoring and key temperature measurement point (TMP) selection are the bases of thermal erroralgorithm to reduce the calculation workload and avoid problems in the coupling of TMPs for thermal errorResults show that the number of TMPs is reduced from 128 to 5, and the developed model demonstrates good

Keywords： thermal error     heavy-duty CNC machine tools     FBG     key TMPs     prediction model    

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New model of load transfer function for pile analysis based on disturbed state model

LIU Qijian, YANG Linde, WU Jun

Frontiers of Structural and Civil Engineering 2007, Volume 1, Issue 4,   Pages 443-447 doi: 10.1007/s11709-007-0060-9

Abstract: Based on the disturbed state concept (DSC), a new model of load transfer function for pile analysis isIn the model, shear intensity of elements in an intact state are simulated by Duncan-Zhang model andThe model of this paper has few parameters, which can reflect the aspects of load transfer function,The well agreement between the in-situ data and the predicted shows that the validity of the model hereinSo the proposed model in this paper is easy to be used in engineering practice.

Keywords： hardening     homogenization     displacement     engineering     Duncan-Zhang    

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Temperature control of transfer roller’s bearing based on finite element analysis

Peng ZHANG, Yourong LI, Han XIAO

Frontiers of Mechanical Engineering 2009, Volume 4, Issue 2,   Pages 215-218 doi: 10.1007/s11465-009-0026-9

Abstract: heat preservation cover is installed on the main rolling line, the heat dissipation environment of the transferFirst, a globe model of the transfer roller is built for finite element analysis.Second, the sub-model of the fixed end bearing is built and the boundary condition of the sub-model issupplied by the results of the globe model.The analysis result of the sub-model shows that the temperature of the transfer roller bearing exceeds

Keywords： transfer roller bearing     finite element analysis     sub-model     temperature control    

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Kinematic error separation on five-axis NC machine tool based on telescoping double ball bar

Min WANG, Jianzhong HU, Tao ZAN

Frontiers of Mechanical Engineering 2010, Volume 5, Issue 4,   Pages 431-437 doi: 10.1007/s11465-010-0110-1

Abstract: algorithm of the homogeneous transformation matrix (HTM) method are applied in establishing the kinematic errormodel of five-axis machining tool with two-axis turntable.Based on this model, a new method for the kinematic error separation in five-axis numerical control (Finally, the value measured by telescoping double ball bar is substituted into the model to obtain kinematicerror of NC machining tool.

Keywords： error modeling     error separation     telescoping double ball bar     five-axis numerical control (NC) machining    

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Robust ensemble of metamodels based on the hybrid error measure

Frontiers of Mechanical Engineering 2021, Volume 16, Issue 3,   Pages 623-634 doi: 10.1007/s11465-021-0641-7

Abstract: The weight factor is adaptively determined according to the hybrid error metric, which combines globaland local error measures to improve the accuracy of the EMs.

Keywords： metamodel     ensemble of metamodels     hybrid error measure     stochastic problem    

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Virtual-position Reading Method—a Novel Method for Error Motion and Form Error Separation

Hong Maisheng,Li Zijun,Su Heng,Ye Feifan

Strategic Study of CAE 2002, Volume 4, Issue 10,   Pages 48-51

Abstract: By means of this method, form error or error motion can be respectively separated according to practicalneeds, and the separating sequence of form error or error motion can also be optional.proposed method, it is not necessary to change the conventional measuring and separating system of form error

Keywords： virtual-position reading     signal re-organization     form error     error motion     error separation techniques    

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A modified zone model for estimating equivalent room thermal capacity

Hua CHEN, Xiaolin WANG

Frontiers in Energy 2013, Volume 7, Issue 3,   Pages 351-357 doi: 10.1007/s11708-013-0254-x

Abstract: The zone model has been widely applied in control analysis of heating, ventilation and air conditioningThis paper proposed a modified zone model which is much simpler in the HVAC system simulation and hasthe similar accuracy to the complicated simulation model.for the building enclosure was developed based on the building thermal network analytical theory and transferThe efficacy of the proposed model was demonstrated by comparing it with the complicated model — heat

Keywords： room model     thermal network analysis     transfer function     heating     ventilation and air conditioning (HVAC)    

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A comprehensive analysis of a 3-P (Pa) S spatial parallel manipulator

Yuzhe LIU,Liping WANG,Jun WU,Jinsong WANG

Frontiers of Mechanical Engineering 2015, Volume 10, Issue 1,   Pages 7-19 doi: 10.1007/s11465-015-0324-3

Abstract: Secondly, the kinematics model of this spatial PKM is set up.Furthermore, the velocity model is put forward.Two indexes based on the velocity model are employed to investigate the performance of this spatial PKMAt last, the output error model can be obtained and simulated.

Keywords： parallel mechanism     concomitant motions     kinematics     workspaces     error model    

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Accounting for local features of fouling formation on PHE heat transfer surface

Petro Kapustenko, Jiří J. Klemeš, Olga Arsenyeva, Olexandr Matsegora, Oleksandr Vasilenko

Frontiers of Chemical Science and Engineering 2018, Volume 12, Issue 4,   Pages 619-629 doi: 10.1007/s11705-018-1736-5

Abstract: in the industry by deteriorating heat recuperation, especially in heat exchangers with enhanced heat transferThe chemical reaction and transport model developed earlier for a description of fouling on intensifiedheat transfer surfaces is used for modeling of plate heat exchanger (PHE) subjected to fouling.The mathematical model consists of a system of differential and algebraic equations.It enables to estimate local parameters of heat transfer process with fouling formation and its development

Keywords： heat transfer     fouling     plate heat exchanger     mathematical model    

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Title Author Date Type Operation

Evaluation of measurement uncertainty of the high-speed variable-slit system based on the Monte Carlo method

Yin ZHANG, Jianwei WU, Kunpeng XING, Zhongpu WEN, Jiubin TAN

Journal Article

Application of different CFD multiphase models to investigate effects of baffles and nanoparticles on heat transfer

Ali SHAHMOHAMMADI,Arezou JAFARI

Journal Article

Financing Model Decision of Inter-basin Water Transfer Projects

Ji-wei Zhu,Li-nan Zhou,Zhao Zhai,Cong Wang

Journal Article

Chord error constraint based integrated control strategy for contour error compensation

Tie ZHANG, Caicheng WU, Yanbiao ZOU

Journal Article

A simplified model of direct-contact heat transfer in desalination system utilizing LNG cold energy

Qingqing SHEN, Wensheng LIN, Anzhong GU, Yonglin JU

Journal Article

A dynamic model of mobile concrete pump boom based on discrete time transfer matrix method

Wu REN, Yunxin WU, Zhaowei ZHANG

Journal Article

Key point selection in large-scale FBG temperature sensors for thermal error modeling of heavy-duty CNC

Jianmin HU, Zude ZHOU, Quan LIU, Ping LOU, Junwei YAN, Ruiya LI

Journal Article

New model of load transfer function for pile analysis based on disturbed state model

LIU Qijian, YANG Linde, WU Jun

Journal Article

Temperature control of transfer roller’s bearing based on finite element analysis

Peng ZHANG, Yourong LI, Han XIAO

Journal Article

Kinematic error separation on five-axis NC machine tool based on telescoping double ball bar

Min WANG, Jianzhong HU, Tao ZAN

Journal Article

Robust ensemble of metamodels based on the hybrid error measure

Journal Article

Virtual-position Reading Method—a Novel Method for Error Motion and Form Error Separation

Hong Maisheng,Li Zijun,Su Heng,Ye Feifan

Journal Article

A modified zone model for estimating equivalent room thermal capacity

Hua CHEN, Xiaolin WANG

Journal Article

A comprehensive analysis of a 3-P (Pa) S spatial parallel manipulator

Yuzhe LIU,Liping WANG,Jun WU,Jinsong WANG

Journal Article

Accounting for local features of fouling formation on PHE heat transfer surface

Petro Kapustenko, Jiří J. Klemeš, Olga Arsenyeva, Olexandr Matsegora, Oleksandr Vasilenko

Journal Article