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Determination of effective stress parameter of unsaturated soils: A Gaussian process regression approach

Pijush Samui, Jagan J

Frontiers of Structural and Civil Engineering 2013, Volume 7, Issue 2,   Pages 133-136 doi: 10.1007/s11709-013-0202-1

Abstract: This article examines the capability of Gaussian process regression (GPR) for prediction of effectivestress parameter ( ) of unsaturated soil.volumetric water content ( ), residual water content ( ), bubbling pressure ( ), suction ( ) and fitting parameterA sensitivity analysis has been done to determine the effect of each input parameter on .

Keywords： unsaturated soil     effective stress parameter     Gaussian process regression (GPR)     artificial neural network    

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Intelligent methods for the process parameter determination of plastic injection molding

Huang GAO, Yun ZHANG, Xundao ZHOU, Dequn LI

Frontiers of Mechanical Engineering 2018, Volume 13, Issue 1,   Pages 85-95 doi: 10.1007/s11465-018-0491-0

Abstract: The determination of process parameters is important in obtaining qualified products and maintainingThis article reviews the recent studies and developments of the intelligent methods applied in the processparameter determination of injection molding.A framework of process parameter determination is proposed after comprehensive discussions.

Keywords： injection molding     intelligent methods     process parameters     optimization    

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Energy efficient cutting parameter optimization

Xingzheng CHEN, Congbo LI, Ying TANG, Li LI, Hongcheng LI

Frontiers of Mechanical Engineering 2021, Volume 16, Issue 2,   Pages 221-248 doi: 10.1007/s11465-020-0627-x

Abstract: In a practical machining process, cutting parameters are vital variables set by manufacturers in accordanceconsideration can effectively reduce energy consumption and improve energy efficiency of the machining processOver the past 10 years, many researchers have been engaged in energy efficient cutting parameter optimizationThe energy consumption characteristics of machining process are analyzed by decomposing total energyCurrent studies on energy efficient cutting parameter optimization by using experimental design method

Keywords： energy efficiency     cutting parameter     optimization     machining process    

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The Parameter Analysis of the Process in Cylinder for Light Oil-based Fuel in Gasoline Engine

Sun Lingling

Strategic Study of CAE 2000, Volume 2, Issue 12,   Pages 78-83

Abstract: To check its quality, a series of tests on process parameter in cylinder are done.power of engine with light oil-based fuel is close to that with gasoline and the standard errors of processparameter in cylinder with light oil-based fuel are lower than that with gasoline.

Keywords： light oil     gasoline engine     process parameter in cylinder     antiknock property    

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Numerical simulation and experimental research on the wheel brush sampling process of an asteroid sampler

Frontiers of Mechanical Engineering 2023, Volume 18, Issue 2, doi: 10.1007/s11465-022-0732-0

Abstract: sampling wheel brushes is established and a simulation and experimental verification of the sampling processThe parameter calibration of the sampled particles is studied first, and the calibrated particle parametersare used in the numerical simulation of the sampling process.are obtained for the working conditions of different rotation speeds, and the effects of different parameterthe dynamic torque sensor is used to test the torque change of the wheel brush during the sampling process

Keywords： asteroid sampling     wheel brush sampler     discrete element method     parameter calibration     experimental    

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The economic impact analysis of process parameters change of large section slurry shield in urban water-rich

Wang Ying

Strategic Study of CAE 2010, Volume 12, Issue 12,   Pages 108-112

Abstract: underground diameter shield construction of Beijing railway for example, the choosing principles of processanalyzed according to the analysis of construction efficiency and machine material consuming when the process

Keywords： shield construction     process parameter     cost analysis    

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Modified Performance Index Method for Parameter Estimation for Industrial Process with Time-varying

Zhang Chenghui

Strategic Study of CAE 2001, Volume 3, Issue 11,   Pages 54-59

Abstract:

A new estimation method based on modified performance index is proposed for time-varying process to

Keywords： parameter estimation     method of calculation     least square method     time-varying system     industrial production    

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Electrospinning of polycarbonate urethane biomaterials

Yakai FENG, Fanru MENG, Ruofang XIAO, Haiyang ZHAO, Jintang GUO

Frontiers of Chemical Science and Engineering 2011, Volume 5, Issue 1,   Pages 11-18 doi: 10.1007/s11705-010-1011-x

Abstract: The applied voltage in the electrospinning process has a significant influence on the morphology of fibers

Keywords： electrospinning     polycarbonate urethane     process parameter     average diameter     morphology    

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Processing parameter optimization of fiber laser beam welding using an ensemble of metamodels and MOABC

Frontiers of Mechanical Engineering 2022, Volume 17, Issue 4, doi: 10.1007/s11465-022-0703-5

Abstract: In fiber laser beam welding (LBW), the selection of optimal processing parameters is challenging and plays a key role in improving the bead geometry and welding quality. This study proposes a multi-objective optimization framework by combining an ensemble of metamodels (EMs) with the multi-objective artificial bee colony algorithm (MOABC) to identify the optimal welding parameters. An inverse proportional weighting method that considers the leave-one-out prediction error is presented to construct EM, which incorporates the competitive strengths of three metamodels. EM constructs the correlation between processing parameters (laser power, welding speed, and distance defocus) and bead geometries (bead width, depth of penetration, neck width, and neck depth) with average errors of 10.95%, 7.04%, 7.63%, and 8.62%, respectively. On the basis of EM, MOABC is employed to approximate the Pareto front, and verification experiments show that the relative errors are less than 14.67%. Furthermore, the main effect and the interaction effect of processing parameters on bead geometries are studied. Results demonstrate that the proposed EM-MOABC is effective in guiding actual fiber LBW applications.

Keywords： laser beam welding     parameter optimization     metamodel     multi-objective    

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Dilution rate and microstructure of TIG arc Ni-Al powder surfacing layer

SHAN Jiguo, DONG Wei, TAN Wenda, ZHANG Di, REN Jialie

Frontiers of Mechanical Engineering 2007, Volume 2, Issue 1,   Pages 20-24 doi: 10.1007/s11465-007-0003-0

Abstract: beads are prepared by a direct current tungsten inert gas arc nickel-aluminum (Ni-Al) powder surfacing processassistant cooler, which can potentially reduce the temperature of the base metal, is used in the surfacing processThe result indicates that with the surfacing parameter combination of low current and speed, the widthWith the reduction of the parameter combination, the intergranular phase ?With the use of an assistant cooler on a selected operation condition during the surfacing process, the

Keywords： decrease     Ni-Al     surfacing parameter     temperature     surfacing process    

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The Mechanism of Fiber Bending and Elongation in the Integrated Piercing Process of Orthogonal Laminated

Zhu Jianxun,He Jianmin,Wang Haiyan

Strategic Study of CAE 2003, Volume 5, Issue 5,   Pages 59-62

Abstract:

The paper analyzes the interaction between woven fabric and needle in the integrated piercing process

Keywords： integrated piercing     fiber     bending elongation     structure parameter     elongation breakage    

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1000 MW ultra-supercritical turbine steam parameter optimization

FENG Weizhong

Frontiers in Energy 2008, Volume 2, Issue 2,   Pages 187-193 doi: 10.1007/s11708-008-0030-5

Abstract: The 2 × 1000 MW ultra-supercritical steam turbine of Shanghai Waigaoqiao Phase III project, which uses grid frequency regulation and overload control through an overload valve, is manufactured by Shanghai Turbine Company using Siemens technology. Through optimization, the steam pressure is regarded as the criterion between constant pressure and sliding pressure operation. At high circulating water temperature, the turbine overload valve is kept closed when the unit load is lower than 1000 MW while at other circulating water temperatures the turbine can run in sliding pressure operation when the unit load is higher than 1000 MW and the pressure is lower than 27 MPa This increases the unit operation efficiency. The 3D bending technology in the critical piping helps to reduce the project investment and minimize the reheat system pressure drop which improves the unit operation efficiency and safety. By choosing lower circulating water design temperature and by setting the individual Boiler Feedwater Turbine condenser to reduce the exhaust steam flow and the heat load to the main condenser, the unit average back pressure and the terminal temperature difference are minimized. Therefore, the unit heat efficiency is increased.
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Structural parameter design method for a fast-steering mirror based on a closed-loop bandwidth

Guozhen CHEN, Pinkuan LIU, Han DING

Frontiers of Mechanical Engineering 2020, Volume 15, Issue 1,   Pages 55-65 doi: 10.1007/s11465-019-0545-y

Abstract: This study proposes a structural parameter design approach for an FSM system based on the quantitative

Keywords： fast-steering mirror     structural parameter     PI controller     bandwidth     notch filter    

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Hierarchical parameter estimation of DFIG and drive train system in a wind turbine generator

Xueping PAN, Ping JU, Feng WU, Yuqing JIN

Frontiers of Mechanical Engineering 2017, Volume 12, Issue 3,   Pages 367-376 doi: 10.1007/s11465-017-0429-y

Abstract:

A new hierarchical parameter estimation method for doubly fed induction generator (DFIG) and drive

Keywords： wind turbine generator     DFIG     drive train system     hierarchical parameter estimation method     trajectory sensitivity    

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Variational mode decomposition based modal parameter identification in civil engineering

Mingjie ZHANG, Fuyou XU

Frontiers of Structural and Civil Engineering 2019, Volume 13, Issue 5,   Pages 1082-1094 doi: 10.1007/s11709-019-0537-3

Abstract: An out-put only modal parameter identification method based on variational mode decomposition (VMD) isconducted to demonstrate the efficiency and highlight the superiority of the proposed method in modal parameterThe proposed method is proved to be efficient and accurate in modal parameter identification for bothlinear and nonlinear civil structures, including structures with closely spaced modes, sudden modal parameter

Keywords： modal parameter identification     variational mode decomposition     civil structure     nonlinear system     closely    

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Title Author Date Type Operation

Determination of effective stress parameter of unsaturated soils: A Gaussian process regression approach

Pijush Samui, Jagan J

Journal Article

Intelligent methods for the process parameter determination of plastic injection molding

Huang GAO, Yun ZHANG, Xundao ZHOU, Dequn LI

Journal Article

Energy efficient cutting parameter optimization

Xingzheng CHEN, Congbo LI, Ying TANG, Li LI, Hongcheng LI

Journal Article

The Parameter Analysis of the Process in Cylinder for Light Oil-based Fuel in Gasoline Engine

Sun Lingling

Journal Article

Numerical simulation and experimental research on the wheel brush sampling process of an asteroid sampler

Journal Article

The economic impact analysis of process parameters change of large section slurry shield in urban water-rich

Wang Ying

Journal Article

Modified Performance Index Method for Parameter Estimation for Industrial Process with Time-varying

Zhang Chenghui

Journal Article

Electrospinning of polycarbonate urethane biomaterials

Yakai FENG, Fanru MENG, Ruofang XIAO, Haiyang ZHAO, Jintang GUO

Journal Article

Processing parameter optimization of fiber laser beam welding using an ensemble of metamodels and MOABC

Journal Article

Dilution rate and microstructure of TIG arc Ni-Al powder surfacing layer

SHAN Jiguo, DONG Wei, TAN Wenda, ZHANG Di, REN Jialie

Journal Article

The Mechanism of Fiber Bending and Elongation in the Integrated Piercing Process of Orthogonal Laminated

Zhu Jianxun,He Jianmin,Wang Haiyan

Journal Article

1000 MW ultra-supercritical turbine steam parameter optimization

FENG Weizhong

Journal Article

Structural parameter design method for a fast-steering mirror based on a closed-loop bandwidth

Guozhen CHEN, Pinkuan LIU, Han DING

Journal Article

Hierarchical parameter estimation of DFIG and drive train system in a wind turbine generator

Xueping PAN, Ping JU, Feng WU, Yuqing JIN

Journal Article

Variational mode decomposition based modal parameter identification in civil engineering

Mingjie ZHANG, Fuyou XU

Journal Article