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An improved algorithm for McDowell’s analytical model of residual stress

Zhaoxu QI,Bin LI,Liangshan XIONG

Frontiers of Mechanical Engineering 2014, Volume 9, Issue 2, Pages 150-155 doi: 10.1007/s11465-014-0295-9

Abstract:

The analytical model for two-dimensional elastoplastic rolling/sliding contact proposed by McDowellis an important tool for predicting residual stress in rolling/sliding processes.

Keywords： residual stress McDowell’s model volume-constancy of plastic deformation FEM elastoplastic rolling/slidingcontact

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3D mode discrete element method with the elastoplastic model

Wei HU, Feng JIN, Chong ZHANG, Jinting WANG

Frontiers of Structural and Civil Engineering 2012, Volume 6, Issue 1, Pages 57-68 doi: 10.1007/s11709-012-0139-9

Abstract: In this paper, the elastoplastic constitutive relationship of blocks is implemented on the 3MDEM platformTo overcome the shortcomings of the conventional criterion for contact fracturing, a new criterion basedFinally, a cantilever beam is simulated as a comprehensive case study, which went through elastic, elastoplastic

Keywords： mode discrete element method elastoplastic numerical method discontinuum contact

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Review of the damage mechanism in wind turbine gearbox bearings under rolling contact fatigue

Yun-Shuai SU, Shu-Rong YU, Shu-Xin LI, Yan-Ni HE

Frontiers of Mechanical Engineering 2019, Volume 14, Issue 4, Pages 434-441 doi: 10.1007/s11465-018-0474-1

Abstract: Gearbox bearings are subjected to rolling contact fatigue (RCF) and they are observed to fail due to

Keywords： rolling contact fatigue (RCF) white etching area (WEA) white etching crack (WEC) adiabatic shear band

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Durability of plasma-sprayed Cr3C2-NiCr coatings under rolling contact conditions

Xiancheng ZHANG, Fuzhen XUAN, Shantung TU, Binshi XU, Yixiong WU

Frontiers of Mechanical Engineering 2011, Volume 6, Issue 1, Pages 118-135 doi: 10.1007/s11465-011-0127-0

Abstract:

The aim of this paper was to address the rolling contact fatigue (RCF) failure mechanisms ofplasma-sprayed Cr3C2-NiCr coatings under different tribological conditions of contact stress.The coatings were prone to fail in delamination under higher contact stresses.amplitude can be used as a key parameter to predict the initiation of subsurface cracks within coating in rollingcontact.

Keywords： rolling contact fatigue coating Weibull distribution failure mode mechanism

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Contact Pressure and Fatigue Life Prediction of Kiln Rolling Ring Under Intermittent Contact

Shi Yu,Xiao Yougang,Lei Xianming

Strategic Study of CAE 2006, Volume 8, Issue 7, Pages 54-57

Abstract:

The mathematical models of contact pressure distribution between rolling ring and shell under intermittentcontact are set up, the formulae of bending moment and bending stress of tyre are obtained.applying nominal stress method and local stress-strain method, the fatigue life prediction model of rollingThe support angle 30° of rolling ring is unreasonable.There exits an optimal angle which will enhance rolling ring life to the utmost.

Keywords： rolling ring contact pressure support angle fatigue life

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Elastoplastic frictional contact problem study on interference fits of compressor

ZHANG Hongwu, WU Changhua, LIAO Aihua

Frontiers in Energy 2008, Volume 2, Issue 3, Pages 313-319 doi: 10.1007/s11708-008-0026-1

Abstract: parametric variational principle (PVP) was used for the analysis of the stress distribution of the 3D elastoplasticfrictional contact of an impeller-shaft sleeve-shaft.The solution of elastoplastic frictional contact problems belongs to unspecified boundary problems whereThe effect of fit tolerance, wall thickness of the shaft sleeve, and rotational speed on the contactshaft sleeve and shaft by press-fitting should be controlled strictly to avoid the rapid increase of contact

Keywords： computation thickness interference-fit interference unspecified

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Accumulated damage process of thermal sprayed coating under rolling contact by acoustic emission technique

Jia XU,Zhen-yu ZHOU,Zhong-yu PIAO

Frontiers of Mechanical Engineering 2016, Volume 11, Issue 3, Pages 227-232 doi: 10.1007/s11465-016-0395-9

Abstract:

The accumulated damage process of rolling contact fatigue (RCF) of plasma-sprayed coatings was investigatedResult showed that the polished coating would resist the asperity contact and remit accumulated damage

Keywords： accumulated damage spray coating rolling contact fatigue acoustic emission

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Ribbed strip rolling by three-dimensional finite element method combining extremely thin array of elements

Zhengyi JIANG,

Frontiers of Mechanical Engineering 2010, Volume 5, Issue 1, Pages 52-60 doi: 10.1007/s11465-009-0087-9

Abstract: In this paper, a three-dimensional finite element modelling of the ribbed strip rolling is carried outThe formulation of the finite element modelling by adding a rib inclined contact surface boundary condition

Keywords： rib inclined contact boundary condition ribbed strip extremely thin elements pulling down of rib height

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Contact fatigue life prediction of a bevel gear under spectrum loading

Pan JIA, Huaiju LIU, Caichao ZHU, Wei WU, Guocheng LU

Frontiers of Mechanical Engineering 2020, Volume 15, Issue 1, Pages 123-132 doi: 10.1007/s11465-019-0556-8

Abstract: Rolling contact fatigue (RCF) issues, such as pitting, might occur on bevel gears because load fluctuation

Keywords： bevel gear rolling contact fatigue (RCF) multiaxial fatigue criterion load spectrum damage accumulation

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Robust SVM-direct torque control of induction motor based on sliding mode controller and sliding mode

Abdelkarim AMMAR,Amor BOUREK,Abdelhamid BENAKCHA

Frontiers in Energy 2020, Volume 14, Issue 4, Pages 836-849 doi: 10.1007/s11708-017-0444-z

Abstract: It describes a coupling of sliding mode direct torque control (DTC) with sliding mode flux and speedThis algorithm uses direct torque control basics and the sliding mode approach.The sliding mode controller is used to generate reference voltages in stationary frame and give themThe second aim of this paper is to design a sliding mode speed/flux observer which can improve the control

Keywords： induction motor direct torque control (DTC) space vector modulation (SVM) sliding mode control (SMC) sliding mode observer (SMO) dS1104

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A rolling 6U parallel mechanism

Zhihuai MIAO, Yanan YAO

Frontiers of Mechanical Engineering 2011, Volume 6, Issue 1, Pages 96-98 doi: 10.1007/s11465-011-0214-2

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Novel probabilistic rolling regular tetrahedron mechanism

Yonghan GUAN, Yan’an YAO, Chao LIU, Ruiming LI

Frontiers of Mechanical Engineering 2021, Volume 16, Issue 2, Pages 363-378 doi: 10.1007/s11465-020-0628-9

Abstract: In this study, a novel mechanism that can conduct probabilistic rolling is proposed to reach a designatedAccording to mobility and kinematic analyses, the mechanism can implement probabilistic rolling.Each rolling gait has three probable rolling directions, and the mechanism rolls in one of the threeFurthermore, the mathematical principle of probabilistic rolling is revealed in terms of probabilityTo achieve the rolling function, the design of the linear actuators is improved, and the extension ratio

Keywords： mobile mechanism probabilistic motion rolling mechanism stochastic motion

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Thin-liquid-film evaporation at contact line

Hao WANG, Zhenai PAN, Zhao CHEN

Frontiers in Energy 2009, Volume 3, Issue 2, Pages 141-151 doi: 10.1007/s11708-009-0020-2

Abstract: When a liquid wets a solid wall, the extended meniscus near the contact line may be divided into three

Keywords： meniscus thin film contact line disjoining pressure evaporation

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A rolling 3-UPU parallel mechanism

Zhihuai MIAO, Yan’an YAO, Xianwen KONG

Frontiers of Mechanical Engineering 2013, Volume 8, Issue 4, Pages 340-349 doi: 10.1007/s11465-013-0282-6

Abstract:

A novel rolling mechanism is proposed based on a 3-UPU parallel mechanism in this paper.The rolling mechanism is composed of two platforms connected by three UPU (universal-prismatic-universalFour rolling modes of the mechanism are discussed and simulated.The feasibility of the rolling mechanism is verified by means of a physical prototype.Finally, its terrain adaptability is enhanced through planning the rolling gaits.

Keywords： parallel mechanism rolling mechanism screw theory

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Modelling of dynamic contact length in rail grinding process

Shaodan ZHI,Jianyong LI,A. M. ZAREMBSKI

Frontiers of Mechanical Engineering 2014, Volume 9, Issue 3, Pages 242-248 doi: 10.1007/s11465-014-0305-y

Abstract: accumulated stress concentrations will cause the plastic deformation of rail towards generating corrugations, contactFirst of all, it’s important to analyze the contact length between the grinding stone and the rail, because the contact length is a critical parameter to measure the grinding capabilities of stones.Therefore the theoretical model for contact length is developed based on the geometrical analysis.

Keywords： rail grinding contact length dynamic model Hamiltonian system grinding stone rail grinding car