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Nonlinear sealing force of a seawater balance valve used in an 11000-meter manned submersible

Frontiers of Mechanical Engineering 2023, Volume 18, Issue 1, doi: 10.1007/s11465-022-0726-y

Abstract: A hybrid analytical–numerical–experimental (ANE) model is proposed to obtain the minimum sealing forceThe effects of roundness error, environmental pressure, and materials on the minimum sealing force areFinally, the minimum sealing force equation is applied in a balance valve to be experimented using aThe balance valve designed through the minimum sealing force equation is leak-free in the experiment.Thus, the minimum sealing force equation is suitable for the ultrahigh pressure balance valve and has

Keywords： seawater balance valve     sealing performance     hybrid ANE model     FEM     minimum sealing force equation    

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Mechanical behavior and semiempirical force model of aerospace aluminum alloy milling using nano biological

Frontiers of Mechanical Engineering 2023, Volume 18, Issue 1, doi: 10.1007/s11465-022-0720-4

Abstract: The traditional milling force models are mainly based on empirical models and finite element simulationsIn this study, the milling force of the integral end milling cutter is deduced by force analysis of theThe instantaneous milling force model of the integral end milling cutter is established under the conditionexperiment is designed to introduce NMQL and the milling feed factor into the instantaneous milling force

Keywords： milling     force     nanofluid minimum quantity lubrication     aerospace aluminum alloy     nano biological lubricant    

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Tribological mechanism of carbon group nanofluids on grinding interface under minimum quantity lubrication

Frontiers of Mechanical Engineering 2023, Volume 18, Issue 1, doi: 10.1007/s11465-022-0733-z

Abstract: Carbon group nanofluids can further improve the friction-reducing and anti-wear properties of minimumTangential grinding force was used to evaluate the lubrication performance under the grinding conditions

Keywords： grinding     minimum quantity lubrication     carbon group nanofluid     tribological mechanism    

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Estimation of the minimum effective dose of tramadol for postoperative analgesia in infants using the

Yue’e Dai, Dongxu Lei, Zhenghua Huang, Yan Yin, G. Allen Finley, Yunxia Zuo

Frontiers of Medicine 2012, Volume 6, Issue 3,   Pages 288-295 doi: 10.1007/s11684-012-0208-4

Abstract: However, the analgesia efficacy of tramadol, particularly its minimum effective dose (MED), is not clear

Keywords： tramadol     minimum effective dose     postoperative analgesia     infants     continual reassessment method    

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Cryogenic minimum quantity lubrication machining: from mechanism to application

Frontiers of Mechanical Engineering 2021, Volume 16, Issue 4,   Pages 649-697 doi: 10.1007/s11465-021-0654-2

Abstract: Environmental machining technologies, such as dry cutting, minimum quantity lubrication (MQL), and cryogenicThe latest progress of cryogenic minimum quantity lubrication (CMQL) technology is reviewed in this paperthe cooling–lubrication mechanism of CMQL and its influence mechanism on material hardness, cutting force

Keywords： cryogenic minimum quantity lubrication (CMQL)     cryogenic medium     processing mode     device application    

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The V－BLAST Detection for MIMO MC－CDMA System

Yang Jie,Feng Guangzeng

Strategic Study of CAE 2007, Volume 9, Issue 1,   Pages 58-62

Abstract:

This paper investigates V-BLAST MC-CDMA down link.A V-BLAST detector per subcarrier is proposed for MIMO MC-CDMA system in this paper and the system performance with var ious numbers of V -BLAST antennas and users for such a system is evaluated throu gh simulations.

Keywords： multiple output(MIMO)     orthogonal frequency division multiplexing(OFDM)     layered space唱time code(LST)     zero force(ZF)algorithm     minimum mean square error(MMSE)    

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Modeling of the minimum cutting thickness in micro cutting with consideration of the friction around

Tianfeng ZHOU, Ying WANG, Benshuai RUAN, Zhiqiang LIANG, Xibin WANG

Frontiers of Mechanical Engineering 2020, Volume 15, Issue 1,   Pages 81-88 doi: 10.1007/s11465-019-0561-y

Abstract: Friction modeling between the tool and the workpiece plays an important role in predicting the minimumthe rake, edge, and clearance faces of the tool; and predict the stagnation point location and the minimumThen, it is applied to calculate the stagnation point location on the edge face and predict the minimumThe stagnation point and the minimum cutting thickness are also observed and illustrated in the FEM simulationMicro cutting experiments are conducted to validate the accuracy of the friction and the minimum cutting

Keywords： tool friction     minimum cutting thickness     finite element method     tool edge radius     micro cutting    

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Modeling limit force capacities of high force to volume lead extrusion dampers

Frontiers of Structural and Civil Engineering 2021, Volume 15, Issue 3,   Pages 609-622 doi: 10.1007/s11709-021-0724-x

Abstract: Small volumetric sizes and high force capacities define high-force-to-volume (HF2V) devices, which canHowever, the design of such devices for specific force capacities has proven difficult based on the complexitiesThis study developed upper- and lower-bound force capacity estimates from analytical mechanics basedThe proposed models were validated by comparing the predicted bounds to experimental force capacity data/sub>) pair has a mean lower-bound gap of 36%, meaning the lower bound was 74% of the actual device force

Keywords： extrusion     lead dampers     upper and lower bound     analytical modelling     limit force    

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Achieving air pollutant emission reduction targets with minimum abatement costs: An enterprise-level

Frontiers of Environmental Science & Engineering 2022, Volume 16, Issue 2, doi: 10.1007/s11783-021-1459-6

Abstract:

• Quantification of efficiency and fairness of abatement allocation are optimized.

Keywords： Pollutant emission reduction allocation     Emission reduction measures     Total abatement cost     Economic efficiency     Abatement space    

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Identification of structural parameters and boundary conditions using a minimum number of measurement

Ali KARIMPOUR, Salam RAHMATALLA

Frontiers of Structural and Civil Engineering 2020, Volume 14, Issue 6,   Pages 1331-1348 doi: 10.1007/s11709-020-0686-4

Abstract: This article proposes a novel methodology that uses mathematical and numerical models of a structure to build a data set and determine crucial nodes that possess the highest sensitivity. Regression surfaces between the structural parameters and structural output features, represented by the natural frequencies of the structure and local transmissibility, are built using the numerical data set. A description of a possible experimental application is provided, where sensors are mounted at crucial nodes, and the natural frequencies and local transmissibility at each natural frequency are determined from the power spectral density and the power spectral density ratios of the sensor responses, respectively. An inverse iterative process is then applied to identify the structural parameters by matching the experimental features with the available parameters in the myriad numerical data set. Three examples are presented to demonstrate the feasibility and efficacy of the proposed methodology. The results reveal that the method was able to accurately identify the boundary coefficients and physical parameters of the Euler-Bernoulli beam as well as a highway bridge model with elastic foundations using only two measurement points. It is expected that the proposed method will have practical applications in the identification and analysis of restored structural systems with unknown parameters and boundary coefficients.

Keywords： structural model validation     eigenvalue problem     response surface     inverse problems    

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Comparison of the performance of traditional advection-dispersion equation and mobile-immobile model

Haizhu HU,Xiaomin MAO

Frontiers of Agricultural Science and Engineering 2016, Volume 3, Issue 3,   Pages 241-248 doi: 10.15302/J-FASE-2016108

Abstract: The traditional advection-dispersion equation (ADE) and the mobile-immobile model (MIM) are widely used

Keywords： solute transport     advection dispersion equation (ADE)     mobile-immobile model (MIM)     conservative solute    

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Optimal design of extractive dividing-wall column using an efficient equation-oriented approach

Yingjie Ma, Nan Zhang, Jie Li, Cuiwen Cao

Frontiers of Chemical Science and Engineering 2021, Volume 15, Issue 1,   Pages 72-89 doi: 10.1007/s11705-020-1977-y

Abstract: The extractive dividing-wall column (EDWC) is one of the most efficient technologies for separation of azeotropic or close boiling-point mixtures, but its design is fairly challenging. In this paper we extend the hybrid feasible path optimisation algorithm (Ma Y, McLaughlan M, Zhang N, Li J. Computers & Chemical Engineering, 2020, 143: 107058) for such optimal design. The tolerances-relaxation integration method is refined to allow for long enough integration time that can ensure the solution of the pseudo-transient continuation simulation close to the steady state before the required tolerance is used. To ensure the gradient and Jacobian information available for optimisation, we allow a relaxed tolerance for the simulation in the sensitivity analysis mode when the simulation diverges under small tolerance. In addition, valid lower bounds on purity of the recycled entrainer and the vapour flow rate in column sections are imposed to improve computational efficiency. The computational results demonstrate that the extended hybrid algorithm can achieve better design of the EDWC compared to those in literature. The energy consumption can be reduced by more than 20% compared with existing literature report. In addition, the optimal design of the heat pump assisted EDWC is achieved using the improved hybrid algorithm for the first time.

Keywords： design     extractive dividing-wall column     equation-oriented optimisation     pseudo-transient continuation model    

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Quality control based on electrode displacement and force in resistance spot welding

Chuntao JI, Lipeng DENG

Frontiers of Mechanical Engineering 2010, Volume 5, Issue 4,   Pages 412-417 doi: 10.1007/s11465-010-0114-x

Abstract: The behaviors of electrode displacement and force during spot welding under various conditions, suchAn electrode force peak is observed and believed relevant to the sufficient nugget size.

Keywords： aluminum     electrode displacement     electrode force     nugget size     data acquisition    

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Visualization of force networks in 2D dense granular materials

Jianguo LIU, Qicheng SUN, Feng JIN,

Frontiers of Structural and Civil Engineering 2010, Volume 4, Issue 1,   Pages 109-115 doi: 10.1007/s11709-010-0003-8

Abstract: To understand the structure and evolution of force chains, a photoelastic technique was improved forThe interparticle contact force distribution was found a peak around the mean value, a roughly exponentialtail for greater force and a dip toward zero for smaller force.The force chain network around the probe tip was depicted, and the contact angle distribution of particlesin force chains was found to be well aligned in the directions of major principal stress.

Keywords： granular matter     force chain     multiscale modeling    

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Nanoparticle-enhanced coolants in machining: mechanism, application, and prospects

Frontiers of Mechanical Engineering 2023, Volume 18, Issue 4, doi: 10.1007/s11465-023-0769-8

Abstract: Nanoparticle-enhanced coolants (NPECs) are increasingly used in minimum quantity lubrication (MQL) machininga volume fraction of 0.2% resulted in a 34% reduction in tool wear, an average decrease in cutting force

Keywords： nanoparticle-enhanced coolant     minimum quantity lubrication     biolubricant     thermophysical properties    

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Title Author Date Type Operation

Nonlinear sealing force of a seawater balance valve used in an 11000-meter manned submersible

Journal Article

Mechanical behavior and semiempirical force model of aerospace aluminum alloy milling using nano biological

Journal Article

Tribological mechanism of carbon group nanofluids on grinding interface under minimum quantity lubrication

Journal Article

Estimation of the minimum effective dose of tramadol for postoperative analgesia in infants using the

Yue’e Dai, Dongxu Lei, Zhenghua Huang, Yan Yin, G. Allen Finley, Yunxia Zuo

Journal Article

Cryogenic minimum quantity lubrication machining: from mechanism to application

Journal Article

The V－BLAST Detection for MIMO MC－CDMA System

Yang Jie,Feng Guangzeng

Journal Article

Modeling of the minimum cutting thickness in micro cutting with consideration of the friction around

Tianfeng ZHOU, Ying WANG, Benshuai RUAN, Zhiqiang LIANG, Xibin WANG

Journal Article

Modeling limit force capacities of high force to volume lead extrusion dampers

Journal Article

Achieving air pollutant emission reduction targets with minimum abatement costs: An enterprise-level

Journal Article

Identification of structural parameters and boundary conditions using a minimum number of measurement

Ali KARIMPOUR, Salam RAHMATALLA

Journal Article

Comparison of the performance of traditional advection-dispersion equation and mobile-immobile model

Haizhu HU,Xiaomin MAO

Journal Article

Optimal design of extractive dividing-wall column using an efficient equation-oriented approach

Yingjie Ma, Nan Zhang, Jie Li, Cuiwen Cao

Journal Article

Quality control based on electrode displacement and force in resistance spot welding

Chuntao JI, Lipeng DENG

Journal Article

Visualization of force networks in 2D dense granular materials

Jianguo LIU, Qicheng SUN, Feng JIN,

Journal Article

Nanoparticle-enhanced coolants in machining: mechanism, application, and prospects

Journal Article