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Frost heave and freezing processes of saturated rock with an open crack under different freezing conditions

Zhitao LV, Caichu XIA, Yuesong WANG, Ziliang LIN

Frontiers of Structural and Civil Engineering 2020, Volume 14, Issue 4,   Pages 947-960 doi: 10.1007/s11709-020-0638-z

Abstract: Frost heave experiments on saturated sandstone and tuff with an open crack are conducted under uniformFrost heave of crack in sandstone with high permeability is more significant under uniform freezing conditionHowever, frost heave of crack in tuff with low permeability is more significant under unidirectionalfreezing condition; however, the frost heave of crack would be more significant for low permeabilityTherefore, the freezing condition and rock permeability determine the frost heave of rock with crack

Keywords： frost heave     rock with crack     freezing process     freezing condition     frost heave mode    

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Thermo-mechanical simulation of frost heave in saturated soils

Frontiers of Structural and Civil Engineering   Pages 1400-1412 doi: 10.1007/s11709-023-0990-x

Abstract: Frost heave-induced damage is one of the winter-related pavement deterioration.The study of frost heave requires conducting a multiphysics analysis, considering the thermal, mechanicalThis paper presents the use of a coupled thermo-mechanical approach to simulate frost heave in saturatedDifferent frost heave scenarios with uniform and non-uniform boundary conditions are considered to demonstrateheave phenomenon, such as water fusion, porosity variation, cryogenic suction force generation, and

Keywords： frost heave     multiphysics analysis     thermo-mechanical approach     saturated soils    

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Experimental investigations of frost release by hydrophilic surfaces

Zhongliang LIU, Lingyan HUANG, Yujun GOU, Yaomin LIU

Frontiers in Energy 2010, Volume 4, Issue 4,   Pages 475-487 doi: 10.1007/s11708-010-0114-x

Abstract: Frost formation occurs when water vapor in the surrounding air comes into contact with cold surfacesenergy, such as increasing the surface hydrophilicity or hydrophobicity, has significant effects on frostIn this paper, a kind of hydrophilic polymer paint is formulated to counteract frost deposition on coldThe coated surface can retard frost formation up to three hours under low plate temperatures (-15.3°CComparisons of frost deposition, pressure drops, and outlet temperatures are made between uncoated and

Keywords： frost formation     hydrophilicity     heat and mass transfer     performance    

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Seepage failure by heave in sheeted excavation pits constructed in stratified cohesionless soils

Serdar KOLTUK, Jie SONG, Recep IYISAN, Rafig AZZAM

Frontiers of Structural and Civil Engineering 2019, Volume 13, Issue 6,   Pages 1415-1431 doi: 10.1007/s11709-019-0565-z

Abstract: this study, experimental and numerical investigations are performed to clarify the seepage failure by heave

Keywords： seepage failure by heave     cohesionless stratified soil     model test     Terzaghi and Peck’s approach     FE analysis    

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Experimental investigation and ANN modeling on improved performance of an innovative method of using heave

Srinivasan CHANDRASEKARAN, Arunachalam AMARKARTHIK, Karuppan SIVAKUMAR, Dhanasekaran SELVAMUTHUKUMARAN, Shaji SIDNEY

Frontiers in Energy 2013, Volume 7, Issue 3,   Pages 279-287 doi: 10.1007/s11708-013-0268-4

Abstract: the improvements, experiments were conducted with non-floating body for different dimensions and the heaveThe device was modeled in artificial neural network (ANN), the heave response for various parametersIt was found that the ANN model could predict the heave response with an accuracy of 99%.

Keywords： ocean wave energy     point absorbers     heaving body     non-floating object     heave response ratio     artificial neural    

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Study on Blasting at Ever-frost Ground in Qinghai-Tibet Plateau

He Guangyi

Strategic Study of CAE 2001, Volume 3, Issue 6,   Pages 57-64

Abstract: achievements on blasting while the writer participated the railway experimental engineering projects in ever-frostmethods and technology, and practicable cumulative blasting technology according to the features of ever-frost

Keywords： ever-frost ground     cutting     foundation pit     drilling hole     cumulative shell     cumulative blasting    

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Heave Compensation Equipment Virtual Prototype Cooperative Design and Simulation Analysis

Lü Dong,He Jiangsan,Liu Shaojun,Huang Kai

Strategic Study of CAE 2004, Volume 6, Issue 3,   Pages 36-40

Abstract:

This paper builds virtual prototype of heave compensation equipment by means of parameterized, concurrent

Keywords： heave compensation     virtual prototype     cooperative design     simulation    

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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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Parallel Authentication Modes Based on Double Blocks or Key Counter

Huang Yuhua,Huai Aiqun,Song Yubo

Strategic Study of CAE 2004, Volume 6, Issue 7,   Pages 70-74

Abstract:

The CBC - MAC mode is not a parallel one.The PKCB mode had a marked improvement on security & speed over parallel authentication mode, PMACAnd it may be combined with the CTR (counter) encryption mode to form a full block cipher mode.block cipher mode (2CTR)，too.The 2CTR mode had a performance advantage over the standard mode, CCM (CTR with CBC - MAC).

Keywords： authentication mode     CBC - MAC mode     PMAC mode     CTR mode     CCM mode    

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Probabilistic stability of uncertain composite plates and stochastic irregularity in their buckling mode

Frontiers of Structural and Civil Engineering   Pages 179-190 doi: 10.1007/s11709-022-0888-z

Abstract: plate were considered Gaussian random fields and their effects on the buckling load and corresponding modespatially varying stochastic properties on the critical load of the plate and the irregularity of buckling modethe plate properties as random fields, a significant stochastic irregularity is obtained in buckling mode

Keywords： uncertain composite plate     stochastic assume mode method     Karhunen−Loève theorem     polynomial chaos approach     plate buckling     irregularity in buckling mode shapes    

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Experimental investigation of evolutive mode-I and mode-II fracture behavior of fiber-reinforced cemented

Frontiers of Structural and Civil Engineering 2023, Volume 17, Issue 2,   Pages 256-270 doi: 10.1007/s11709-022-0924-z

Abstract: temperature (20, 35, and 45 °C) and cement hydration at different curing times (3, 7, and 28 d) on the mode-Iand mode-II fracture behavior and properties of fiber-reinforced CPB is investigated.

Keywords： fiber reinforcement     cemented paste backfill     fracture behavior     underground mine     cement hydration    

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Laboratory experiment on using non-floating body to generate electrical energy from water waves

Arunachalam AMARKARTHIK, Srinivasan CHANDRASEKARAN, Karuppan SIVAKUMAR, Harender SINHMAR

Frontiers in Energy 2012, Volume 6, Issue 4,   Pages 361-365 doi: 10.1007/s11708-012-0210-1

Abstract: This paper describes an innovative method of using a non-buoyant body to harness ocean waves. All the point absorbers are buoyant in nature and move up due to buoyancy and come down because of gravity. The point absorbers are designed to move along the waves to make the device efficient. These devices face excessive stress during the rough weather on account of the extreme motion of waves and cause the total device failure. The present study shows that using a non-buoyant body for conventional point absorber principle is much efficient and safer than any other device proposed till today. A small scale wave energy converter with non-buoyant body was designed, fabricated and tested in small scale wave maker. An electrical generator was coupled with the device to generate electrical energy from harnessed waves. The generator was electrically loaded and the generated power was measured. It was found from the experiments that the proposed device showed a significant improvement in electricity generation and safety during extreme conditions. In addition to the electricity generation, the characteristics of the device were also studied by using various wave and device parameters.

Keywords： ocean wave energy     point absorbers     heaving body     non-floating object     heave response ratio     electrical energy    

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An adaptive sliding mode control technology for weld seam tracking

Jie LIU,Youmin HU,Bo WU,Kaibo ZHOU,Mingfeng GE

Frontiers of Mechanical Engineering 2015, Volume 10, Issue 1,   Pages 95-101 doi: 10.1007/s11465-015-0332-3

Abstract:

A novel adaptive sliding mode control algorithm is derived to deal with seam tracking control problemalgorithm enables better high-precision tracking performance with chattering-free than traditional sliding mode

Keywords： weld seam tracking     welding robotic manipulator     adaptive control     sliding mode control    

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Relative vibration identification of cutter and workpiece based on improved bidimensional empirical mode

Jiasheng LI, Xingzhan LI, Wei WEI, Pinkuan LIU

Frontiers of Mechanical Engineering 2020, Volume 15, Issue 2,   Pages 227-239 doi: 10.1007/s11465-020-0587-1

Abstract: In this study, the bidimensional empirical mode decomposition (BEMD) method is used to identify such

Keywords： bidimensional empirical mode decomposition     spatial spectrum analysis     boundary effect     vibration identification    

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Exploration of interconnected factory mode: Haier Jiaozhou Air Conditioner Interconnected Factory

Yunjie ZHOU

Frontiers of Engineering Management 2017, Volume 4, Issue 4,   Pages 500-503 doi: 10.15302/J-FEM-2017105

Keywords： interconnected factory mode     user-centered     mass customization     interconnection    

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Title Author Date Type Operation

Frost heave and freezing processes of saturated rock with an open crack under different freezing conditions

Zhitao LV, Caichu XIA, Yuesong WANG, Ziliang LIN

Journal Article

Thermo-mechanical simulation of frost heave in saturated soils

Journal Article

Experimental investigations of frost release by hydrophilic surfaces

Zhongliang LIU, Lingyan HUANG, Yujun GOU, Yaomin LIU

Journal Article

Seepage failure by heave in sheeted excavation pits constructed in stratified cohesionless soils

Serdar KOLTUK, Jie SONG, Recep IYISAN, Rafig AZZAM

Journal Article

Experimental investigation and ANN modeling on improved performance of an innovative method of using heave

Srinivasan CHANDRASEKARAN, Arunachalam AMARKARTHIK, Karuppan SIVAKUMAR, Dhanasekaran SELVAMUTHUKUMARAN, Shaji SIDNEY

Journal Article

Study on Blasting at Ever-frost Ground in Qinghai-Tibet Plateau

He Guangyi

Journal Article

Heave Compensation Equipment Virtual Prototype Cooperative Design and Simulation Analysis

Lü Dong,He Jiangsan,Liu Shaojun,Huang Kai

Journal Article

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

Abdelkarim AMMAR,Amor BOUREK,Abdelhamid BENAKCHA

Journal Article

Parallel Authentication Modes Based on Double Blocks or Key Counter

Huang Yuhua,Huai Aiqun,Song Yubo

Journal Article

Probabilistic stability of uncertain composite plates and stochastic irregularity in their buckling mode

Journal Article

Experimental investigation of evolutive mode-I and mode-II fracture behavior of fiber-reinforced cemented

Journal Article

Laboratory experiment on using non-floating body to generate electrical energy from water waves

Arunachalam AMARKARTHIK, Srinivasan CHANDRASEKARAN, Karuppan SIVAKUMAR, Harender SINHMAR

Journal Article

An adaptive sliding mode control technology for weld seam tracking

Jie LIU,Youmin HU,Bo WU,Kaibo ZHOU,Mingfeng GE

Journal Article

Relative vibration identification of cutter and workpiece based on improved bidimensional empirical mode

Jiasheng LI, Xingzhan LI, Wei WEI, Pinkuan LIU

Journal Article

Exploration of interconnected factory mode: Haier Jiaozhou Air Conditioner Interconnected Factory

Yunjie ZHOU

Journal Article