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Design of Microstructure Parameters on a Small Multi-Throttle Aerostatic Guideway in Photolithography Article

Zhongpu Wen,  Jianwei Wu,  Kunpeng Xing, Yin Zhang,  Jiean Li,  Jiubin Tan

Engineering 2021, Volume 7, Issue 2,   Pages 226-237 doi: 10.1016/j.eng.2019.09.012

Abstract:

A compact multi-throttle aerostatic guideway is the preferred structure for high precision and accelerationThe presence of microstructure, such as recesses and grooves, on the guideway working surface has beenNevertheless, the effects on the guideway performance of changing the microstructure on the micron levelThe experimental results show that the rotational stiffness of the designed guideway, based on the tuned

Keywords： Photolithography     Multi-throttle aerostatic guideway     Microstructure     Working point     Rotational stiffness    

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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 spanangles were changed during the wind tunnel test to study the effects on aerodynamic interferences of aerostatic

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

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Application of Porous Aerostatic Bearings in Three-axis Table

Du Jinming

Strategic Study of CAE 2005, Volume 7, Issue 1,   Pages 65-68

Abstract:

Aerostatic bearings have been applied widely in aviation, aerospace and precision electronics.Porous aerostatic bearings have higher load capacity, static stiffness and highed damping than otherThe paper presents theoretical analysis of porous aerostatic bearings and compares them with orificeaerostatic bearings.The results show the load capacity of porous aerostatic bearings is higher than orifice aerostatic bearings

Keywords： aerostatic bearings     porous     orifice restricted     three-axis table    

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Research of the aerostatic and aerodynamic stability of super long-span cable-stayed bridges

Zhang Xinjun and Sun Hailing

Strategic Study of CAE 2014, Volume 16, Issue 3,   Pages 50-58

Abstract: Three-dimensional nonlinear aerostatic and aerodynamic stability analysis of long-span bridges is usedto investigate the aerostatic and aerodynamic stability of a super long- span cable- stayed bridge withIn addition，parametric analysis on the aerostatic and aerodynamic stability of super long-span cable-stayed

Keywords： super long-span cable-stayed bridge     aerostatic stability     aerodynamic stability     design parameter    

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Dynamic modeling of hydrostatic guideway considering compressibility and inertia effect

Yikang DU,Kuanmin MAO,Yaming ZHU,Fengyun WANG,Xiaobo MAO,Bin LI

Frontiers of Mechanical Engineering 2015, Volume 10, Issue 1,   Pages 78-88 doi: 10.1007/s11465-015-0331-4

Abstract:

Hydrostatic guideways are used as an alternative to contact bearings due to high stiffness and high damping in heavy machine tools. To improve the dynamic characteristic of bearing structure, the dynamic modeling of the hydrostatic guidway should be accurately known. This paper presents a “mass-spring-Maxwell” model considering the effects of inertia, squeeze, compressibility and static bearing. To determine the dynamic model coefficients, numerical simulation of different cases between displacement and dynamic force of oil film are performed with fluent code. Simulation results show that hydrostatic guidway can be taken as a linear system when it is subjected to a small oscillation amplitude. Based on a dynamic model and numerical simulation, every dynamic model’s parameters are calculated by the Levenberg-Marquardt algorithm. Identification results show that “mass-spring-damper” model is the most appropriate dynamic model of the hydrostatic guidway. This paper provides a reference and preparation for the analysis of the dynamic model of the similar hydrostatic bearings.

Keywords： hydrostatic guidway     dynamic model     dynamic mesh technique     Levenberg-Marquardt     mass-spring-damper model    

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Multi-objective optimization for the multi-mode finance-based project scheduling problem

Sameh Al-SHIHABI, Mohammad AlDURGAM

Frontiers of Engineering Management 2020, Volume 7, Issue 2,   Pages 223-237 doi: 10.1007/s42524-020-0097-1

Abstract: The FBSP is extended to consider different execution modes that result in the multi-mode FBSP (MMFBSPNo exact models are available for contractors who look for optimal solutions to the multi-objective MMFBSPMoreover, its current version, CPLEX 12.9, solves multi-objective optimization problems.This study presents a mixed-integer linear programming model for the multi-objective MMFBSP.Using CPLEX 12.9, we discuss several techniques that researchers can use to optimize a multi-objective

Keywords： multi-objective optimization     finance-based scheduling     multi-mode project scheduling     mixed-integer linear    

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Build orientation determination of multi-feature mechanical parts in selective laser melting via multi-objective

Frontiers of Mechanical Engineering 2023, Volume 18, Issue 2, doi: 10.1007/s11465-022-0737-8

Abstract: This study proposes a method to determine the build orientation of multi-feature mechanical parts (MFMPsLastly, a multi-objective decision making method integrated by the technique for order of preference

Keywords： selective laser melting (SLM)     build orientation determination     multi-feature mechanical part (MFMP)     fuzzy analytical hierarchy process     multi-objective decision making (MODM)    

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A practical multi-lane factor model of bridges based on multi-truck presence considering lane load disparities

Frontiers of Structural and Civil Engineering 2021, Volume 15, Issue 4,   Pages 877-894 doi: 10.1007/s11709-021-0756-2

Abstract: Many bridge design specifications consider multi-lane factors (MLFs) a critical component of the trafficMeasured multi-lane traffic data generally exhibit significant lane disparities in traffic loads overTo address this drawback, a multi-coefficient MLF model was developed based on an improved probabilistic

Keywords： bridges     multi-lane factor     traffic load     lane load disparity     multi-truck presence     weigh-in-motion    

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Development of machine learning multi-city model for municipal solid waste generation prediction

Frontiers of Environmental Science & Engineering 2022, Volume 16, Issue 9, doi: 10.1007/s11783-022-1551-6

Abstract:

● A database of municipal solid waste (MSW) generation in China was established.

Keywords： Municipal solid waste     Machine learning     Multi-cities     Gradient boost regression tree    

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A naive optimization method for multi-line systems with alternative machines

Weichang KONG, Fei QIAO, Qidi WU

Frontiers of Mechanical Engineering 2019, Volume 14, Issue 4,   Pages 377-392 doi: 10.1007/s11465-019-0544-z

Abstract: The scheduling of parallel machines and the optimization of multi-line systems are two hotspots in theConsequently, optimization of multi-line systems with alternative machines requires a simple mechanismTo define a general multi-line system with alternative machines, this study introduces the capabilitystudies are performed on a real 5/6-inch semiconductor wafer manufacturing facility and a simulated multi-lineThe method demonstrates a potential for utilization in multi-objective optimization.

Keywords： multi-line systems     alternative machines     feedback control     closed-loop optimization    

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Mechanical responses of multi-layered ground due to shallow tunneling with arbitrary ground surface load

Frontiers of Structural and Civil Engineering 2023, Volume 17, Issue 5,   Pages 745-762 doi: 10.1007/s11709-023-0935-4

Abstract: on complex variable theory is proposed to investigate ground responses due to shallow tunneling in multi-layeredTo solve the proposed multi-boundary problem, a series of analytic functions is introduced to accuratelyBased on the principle of linear-elastic superposition, the multi-boundary problem is converted intopresent model is superior to the classical model for analyzing ground responses of shallow tunneling in multi-layered

Keywords： analytical model     mechanical response     multi-layered ground     shallow tunneling     ground surface load    

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WATER POLLUTION AND AGRICULTURE: MULTI-POLLUTANT PERSPECTIVES

Frontiers of Agricultural Science and Engineering 2023, Volume 10, Issue 4,   Pages 639-647 doi: 10.15302/J-FASE-2023527

Abstract: As a result, water science has been shifting from single-pollutant to multi-pollutant perspectives forpaper summarizes and discusses four main highlights related to water pollution and agriculture from the multi-pollutant

Keywords： water quality     agriculture     multi-pollutant assessment     hotspots     interactions    

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A cellphone-based colorimetric multi-channel sensor for water environmental monitoring

Frontiers of Environmental Science & Engineering 2022, Volume 16, Issue 12, doi: 10.1007/s11783-022-1590-z

Abstract:

● A cellphone-based colorimetric multi-channel sensor for in-field

Keywords： Colorimetric analysis     Multi-channel sensor     Cellphone     Water quality indexes     Environmental monitoring    

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On the added value of multi-scale modeling of concrete

Frontiers of Structural and Civil Engineering 2022, Volume 16, Issue 1,   Pages 1-23 doi: 10.1007/s11709-021-0790-0

Abstract: This review of the added value of multi-scale modeling of concrete is based on three representative examplesThe structural nature of the high-dynamic strength increase can be explained by using a multi-scale modelThe second example refers to multi-scale thermoelastic analysis of concrete pavements, subjected to solarThe third example deals with multi-scale structural analysis of a real-scale test of a segmental tunnelOverall, it is concluded that multi-scale models have indeed a significant added value.

Keywords： experiments     multi-scale analysis     conventional structural analysis     concrete     reinforced concrete    

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Anisotropy of multi-layered structure with sliding and bonded interlayer conditions

Lingyun YOU, Kezhen YAN, Jianhong MAN, Nengyuan LIU

Frontiers of Structural and Civil Engineering 2020, Volume 14, Issue 3,   Pages 632-645 doi: 10.1007/s11709-020-0617-4

Abstract: A better understanding of the mechanical behavior of the multi-layered structure under external loadingobjective of this study are to propose and develop an analytical solution for the mechanical behaviors of multi-layeredaxisymmetric loading, and to investigate the impact of anisotropic layers and interlayer conditions on the multi-layeredThen the global matrix technique is applied to achieve the analytical solution of multi-layered structurethree-layered flexible pavement was applied as the computing carrier of numerical analysis for the multi-layered

Keywords： multi-layered structure     Hankel transformation     anisotropic     transversely isotropic     interlayer condition    

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Title Author Date Type Operation

Design of Microstructure Parameters on a Small Multi-Throttle Aerostatic Guideway in Photolithography

Zhongpu Wen,  Jianwei Wu,  Kunpeng Xing, Yin Zhang,  Jiean Li,  Jiubin Tan

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

Application of Porous Aerostatic Bearings in Three-axis Table

Du Jinming

Journal Article

Research of the aerostatic and aerodynamic stability of super long-span cable-stayed bridges

Zhang Xinjun and Sun Hailing

Journal Article

Dynamic modeling of hydrostatic guideway considering compressibility and inertia effect

Yikang DU,Kuanmin MAO,Yaming ZHU,Fengyun WANG,Xiaobo MAO,Bin LI

Journal Article

Multi-objective optimization for the multi-mode finance-based project scheduling problem

Sameh Al-SHIHABI, Mohammad AlDURGAM

Journal Article

Build orientation determination of multi-feature mechanical parts in selective laser melting via multi-objective

Journal Article

A practical multi-lane factor model of bridges based on multi-truck presence considering lane load disparities

Journal Article

Development of machine learning multi-city model for municipal solid waste generation prediction

Journal Article

A naive optimization method for multi-line systems with alternative machines

Weichang KONG, Fei QIAO, Qidi WU

Journal Article

Mechanical responses of multi-layered ground due to shallow tunneling with arbitrary ground surface load

Journal Article

WATER POLLUTION AND AGRICULTURE: MULTI-POLLUTANT PERSPECTIVES

Journal Article

A cellphone-based colorimetric multi-channel sensor for water environmental monitoring

Journal Article

On the added value of multi-scale modeling of concrete

Journal Article

Anisotropy of multi-layered structure with sliding and bonded interlayer conditions

Lingyun YOU, Kezhen YAN, Jianhong MAN, Nengyuan LIU

Journal Article