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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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Model-based nonlinear control of hydraulic servo systems: Challenges, developments and perspectives

Jianyong YAO

Frontiers of Mechanical Engineering 2018, Volume 13, Issue 2, Pages 179-210 doi: 10.1007/s11465-018-0464-3

Abstract: Essential nonlinearity is a unique feature and makes model-based nonlinear control more attractive, dueIn this paper, a discussion for challenges in model-based nonlinear control, latest developments andfriction during low velocity tracking, severe disturbance, periodic disturbance, etc.; to handle variouschallenges, nonlinear solutions including parameter adaptation, nonlinear robust control, state andresearch topics (measurement noise, constraints, inner valve dynamics, input nonlinearity, etc.) in nonlinear

Keywords： hydraulic servo system adaptive control robust control nonlinear friction disturbance compensation repetitive

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Nonlinear elastic model for compacted clay concrete interface

R. R. SHAKIR, Jungao ZHU

Frontiers of Structural and Civil Engineering 2009, Volume 3, Issue 2, Pages 187-194 doi: 10.1007/s11709-009-0033-2

Abstract: In this paper, a nonlinear elastic model was developed to simulate the behavior of compacted clay concrete

Keywords： interface modeling friction soil structure interface soil structure interaction simple shear test

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High-precision gyro-stabilized control of a gear-driven platform with a floating gear tension device

Frontiers of Mechanical Engineering 2021, Volume 16, Issue 3, Pages 487-503 doi: 10.1007/s11465-021-0635-5

Abstract: However, the weaker gear support stiffness and more complex meshing friction are also induced by theFirst, the structural properties of the gear transmission and the friction-generating mechanism are analyzed

Keywords： inertially stabilized platform floating gear tension device nonlinear friction disturbance compensation

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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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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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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 frictionHowever, a lot of experiments carried out with scanning microscope, atomic force microscope and frictionIn 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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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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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 minimumIn this study, a new three-region friction modeling is proposed to illustrate the material flow mechanismaround the friction zone in micro cutting; estimate the stress distributions on the rake, edge, andThe friction modeling is established by determining the distribution of normal and shear stress.Micro 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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Study of base friction simulation tests based on a complicated engineered bridge slope

Liu HE, Guang WU, Hua WANG

Frontiers of Structural and Civil Engineering 2012, Volume 6, Issue 4, Pages 393-397 doi: 10.1007/s11709-012-0174-6

Abstract: In this paper, a physical base friction test model of a slope is established.slope in both its natural state and during excavation loading is qualitatively analyzed through base frictionThe base friction test results are then subjected to comparison and analysis using finite element numerical

Keywords： base friction test slope stability evaluation bridge slope

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Parametric study on the Multangular-Pyramid Concave Friction System (MPCFS) for seismic isolation

Wei XIONG, Shan-Jun ZHANG, Li-Zhong JIANG, Yao-Zhuang LI

Frontiers of Structural and Civil Engineering 2020, Volume 14, Issue 5, Pages 1152-1165 doi: 10.1007/s11709-020-0659-7

Abstract: conducted on a steel-frame structure Finite-Element (FE) model with the Multangular-Pyramid Concave Frictionparametric study with varying controlling parameters, such as isolation foundation, inclination angle, friction

Keywords： seismic isolation variable frequency near-fault earthquake numerical study Multangular-Pyramid Concave Friction

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Laboratory and field evaluation of asphalt pavement surface friction resistance

Zhong WU, Chris ABADIE

Frontiers of Structural and Civil Engineering 2018, Volume 12, Issue 3, Pages 372-381 doi: 10.1007/s11709-017-0463-1

Abstract:

Pavement surface friction is a significant factor for driving safety and plays a critical role inHowever, the current asphalt mixture design procedure does not directly consider friction as a requirementThe objective of this study was to develop a surface friction prediction model that can be used duringon twenty-two selected asphalt pavement sections using different in situ devices including Dynamic Frictionsuited in checking whether the selected aggregates in a wearing course mix design would meet field friction

Keywords： friction skid resistance polishing PSV LWST micro-texture macro-texture

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Predictive model to decouple the contributions of friction and plastic deformation to machined surface

Subhash ANURAG, Yuebin GUO,

Frontiers of Mechanical Engineering 2010, Volume 5, Issue 3, Pages 247-255 doi: 10.1007/s11465-010-0097-7

Abstract: Furthermore, the individual contribution of tool/work friction and plastic deformation of work materialsprovides a finite element method based on a predictive model to decouple the contributions of tool/work frictiondeformation of work material contributes to the majority of surface temperature, whereas the tool/work frictionA large tool/work friction leads to higher surface temperatures, and the use of a cutting tool with physicalreversal from subsurface maximum residual to surface maximum residual stress may occur when tool/work friction

Keywords： surface temperature friction residual stress finite element analysis (FEA) dry cutting tool property

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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 friction

Keywords： dynamic response friction coefficient wind loads wind turbine gearbox

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New nonlinear stiffness actuator with predefined torque‒deflection profile

Frontiers of Mechanical Engineering 2023, Volume 18, Issue 1, doi: 10.1007/s11465-022-0721-3

Abstract: A nonlinear stiffness actuator (NSA) could achieve high torque/force resolution in low stiffness rangeThough sliding friction force is inevitable because no rollers were used in the cam-based mechanism,sliding displacement between the cam and the leaf spring is very small, and consumption of sliding friction

Keywords： compliant actuator nonlinear stiffness actuator nonlinear spring predefined torque−deflection profile