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A dynamic model of mobile concrete pump boom based on discrete time transfer matrix method

Wu REN, Yunxin WU, Zhaowei ZHANG

Frontiers of Mechanical Engineering 2013, Volume 8, Issue 4,   Pages 360-366 doi: 10.1007/s11465-013-0280-8

Abstract: A dynamics model of a mobile concrete pump boom is established based on discrete time transfer matrixIn the model, the booms and links are regarded as rigid elements and the hydraulic cylinders are equivalentThe overall dynamic equation and transfer matrix of the model can be assembled by sub-structures A andThe displacement and rotation angle curves of the proposed method fit well with the ADAMS model.

Keywords： multi-body     mobile concrete pump boom     discrete time transfer matrix method (DTTMM)     kinematic     dynamic     tip    

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Study of two-phase flow regime identification in horizontal tube bundles under vertical upward cross-flow

HUANG Xinghua, WANG Li, JIA Feng

Frontiers in Energy 2008, Volume 2, Issue 3,   Pages 333-338 doi: 10.1007/s11708-008-0043-0

Abstract: Tests on two-phase flow pattern of R134a were conducted under low mass velocity and flow boiling conditionsTime series of differential pressure fluctuations were measured and analyzed with discrete wavelet transformThe comparison with experiment results show that it is feasible to use the discrete wavelet transform

Keywords： two-phase     discrete     appropriate     wavelet-transform     criterion    

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Stormwater treatment: examples of computational fluid dynamics modeling

Gaoxiang YING, John SANSALONE, Srikanth PATHAPATI, Giuseppina GAROFALO, Marco MAGLIONICO, Andrea BOLOGNESI, Alessandro ARTINA

Frontiers of Environmental Science & Engineering 2012, Volume 6, Issue 5,   Pages 638-648 doi: 10.1007/s11783-012-0442-7

Abstract: The Navier-Stokes (NS) system of nonlinear partial differential equations for multi-phase hydrodynamicsA standard turbulence model is used to resolve flow, and a discrete phase model (DPM) is utilized toCFD results closely follow physical model results across the entire range of flow rates.

Keywords： hydrodynamic separation     filtration     adsorption     computational fluid dynamics (CFD)     turbulence modeling     discretephase model     particle separation     detention/retention basins     clarification    

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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: The three-dimensional mode-deformable discrete element method (3MDEM) is an extended distinct element

Keywords： mode discrete element method     elastoplastic     numerical method     discontinuum     contact    

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Model test and discrete element method simulation of shield tunneling face stability in transparent clay

Huayang LEI, Yajie ZHANG, Yao HU, Yingnan LIU

Frontiers of Structural and Civil Engineering 2021, Volume 15, Issue 1,   Pages 147-166 doi: 10.1007/s11709-020-0704-6

Abstract: transparent clay with properties similar to those of Tianjin clay is prepared and a new transparent clay modeltest apparatus is developed to overcome the “black box” problem in the traditional model test.A series of transparent clay model tests is performed to investigate the active failure mode, influence

Keywords： shield tunneling face     stability     transparent clay     model test     numerical simulation    

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High-order phase-field model with the local and second-order max-entropy approximants

Fatemeh AMIRI

Frontiers of Structural and Civil Engineering 2019, Volume 13, Issue 2,   Pages 406-416 doi: 10.1007/s11709-018-0475-5

Abstract: We approximate the fracture surface energy functional based on phase-field method with smooth local maximumof the meshfree methods such as LME and SME approximants allows to directly solve the fourth-order phase-fieldwill first show that the crack surface functional can be captured more accurately in the fourth-order modelFurthermore, smaller length scale parameter is needed for the fourth-order model to approximate the energyThe proposed meshfree fourth-order phase-field formulation show more stable results for SME compared

Keywords： second-order maximum entropy     local maximum entropy     second- and fourth-order phase-field models     B-spline    

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Application of a weakly compressible smoothed particle hydrodynamics multi-phase model to non-cohesive

Rasoul MEMARZADEH, Gholamabbas BARANI, Mahnaz GHAEINI-HESSAROEYEH

Frontiers of Structural and Civil Engineering 2018, Volume 12, Issue 3,   Pages 412-424 doi: 10.1007/s11709-017-0432-8

Abstract: present study is the application of mesh free Lagrangian two-dimensional non-cohesive sediment transport modelapplied to a two-phase flow over an initially trapezoidal-shaped sediment embankment.To simulate the movement of sediment particles, the model considers a powerful two-part technique; whenthe sediment phase has rigid behavior, only the force term due to shear stress in the Navier-Stokesbetween computational results and experimental data shows that the model generally predicts well the

Keywords： WCSPH method     non-cohesive sediment transport     rheological model     two-part technique     two-phase dam break    

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A “Sequential Design of Simulations” approach for exploiting and calibrating discrete element simulations

Frontiers of Chemical Science and Engineering 2022, Volume 16, Issue 6,   Pages 874-885 doi: 10.1007/s11705-021-2131-1

Abstract: The flow behaviours of cohesive particles in the ring shear test were simulated and examined using discrete

Keywords： discrete element method     cohesive materials     parameter calibration     ring shear cell     design of experiments    

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Improving existing “reaching law” for better discrete control of seismically-excited building structures

Zhijun LI, Zichen DENG

Frontiers of Structural and Civil Engineering 2009, Volume 3, Issue 2,   Pages 111-116 doi: 10.1007/s11709-009-0022-5

Abstract: In this paper, a novel “composite reaching law” was explained in details: 1) the equation of discretemotion for a control system; 2) the design of discrete-time variable structure control.In addition, the model of a three-storey shear-type building structure was used to verify the effectivenessof the discrete variable structure control method.The results of numerical example analysis of the model show that the control law can effectively reduce

Keywords： discrete-time variable structure control     composite reaching law     chattering effect     saturated control law    

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Hydromechanical model for hydraulic fractures using XFEM

Bo HE

Frontiers of Structural and Civil Engineering 2019, Volume 13, Issue 1,   Pages 240-249 doi: 10.1007/s11709-018-0490-6

Abstract: In this study, a hydromechanical model for fluid flow in fractured porous media is presented.The fluid flow through discrete cracks will be modelled by the extended finite element method and anWe also present a consistent linearization of the underlying non-linear discrete equations.Furthermore, the model is extended to includes crack propagation.examples are presented to demonstrate the versatility and efficiency of this two-scale hydromechanical model

Keywords： multi-phase medium     porous     fracture     multi-scale method    

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Application of coupled multi-body dynamics–discrete element method for optimization of particle damper

Danhui DAN, Qianqing WANG, Jiongxin GONG

Frontiers of Structural and Civil Engineering 2021, Volume 15, Issue 1,   Pages 244-252 doi: 10.1007/s11709-021-0696-x

Abstract: In this paper, a coupled multi-body dynamics–discrete element method is proposed to simulate the dampingThe analyses are done by combining the discrete element method in EDEM and multi-body dynamics in ADAMS

Keywords： granular material     vibration control     discrete element method     particle damper     cable vibration    

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A model reference adaptive control based method for actuator delay estimation in real-time testing

Cheng CHEN, James M. RICLES

Frontiers of Structural and Civil Engineering 2010, Volume 4, Issue 3,   Pages 277-286 doi: 10.1007/s11709-010-0072-8

Abstract: This paper presents a model reference adaptive control based method to identify the parameter of a simplifieddiscrete model for servo-hydraulic dynamics and the resulting compensation method.

Keywords： real-time testing     actuator delay     compensation     adaptive control     MIT rule     discrete transfer function    

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Coupled solid-fluid FE-analysis of an embankment dam

Michael PERTL, Matthias HOFMANN, Guenter HOFSTETTER

Frontiers of Structural and Civil Engineering 2011, Volume 5, Issue 1,   Pages 53-62 doi: 10.1007/s11709-010-0084-4

Abstract: A coupled solid-fluid FE-model for partially saturated soils, characterized by modeling the soil as athree-phase material consisting of a deformable soil skeleton and the fluid phases water and air, isAs a constitutive model for the soil skeleton, the well-known Barcelona Basic model (BBM) is employedThe coupled FE-model is applied to the coupled transient numerical simulation of the water flow and the

Keywords： multi-phase model     unsaturated soil model     Barcelona Basic model (BBM)     return mapping algorithm     embankment    

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Gained switching-based fuzzy sliding mode control for a discrete-time underactuated robotic system with

Hui LI, Ruiqin LI, Jianwei ZHANG

Frontiers of Mechanical Engineering 2021, Volume 16, Issue 2,   Pages 353-362 doi: 10.1007/s11465-020-0620-4

Abstract: This study proposes a gained switching-based discrete-time sliding mode control method to address thechattering issue in disturbed discrete-time systems, which suffer from various unknown uncertainties

Keywords： sliding-mode control     robot control     discrete-time uncertain systems     fuzzy logic    

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Discrete-event stochastic systems with correlated inputs: Modeling and performance evaluation

Frontiers of Engineering Management 2022, Volume 9, Issue 2,   Pages 214-220 doi: 10.1007/s42524-022-0192-6

Abstract: In the majority of the previous works on discrete-event stochastic systems, they have been assumed toinput processes, and we discuss the difficulties and possible future research topics in the study of discrete-event

Keywords： discrete-event stochastic system     correlated input     performance evaluation    

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Title Author Date Type Operation

A dynamic model of mobile concrete pump boom based on discrete time transfer matrix method

Wu REN, Yunxin WU, Zhaowei ZHANG

Journal Article

Study of two-phase flow regime identification in horizontal tube bundles under vertical upward cross-flow

HUANG Xinghua, WANG Li, JIA Feng

Journal Article

Stormwater treatment: examples of computational fluid dynamics modeling

Gaoxiang YING, John SANSALONE, Srikanth PATHAPATI, Giuseppina GAROFALO, Marco MAGLIONICO, Andrea BOLOGNESI, Alessandro ARTINA

Journal Article

3D mode discrete element method with the elastoplastic model

Wei HU, Feng JIN, Chong ZHANG, Jinting WANG

Journal Article

Model test and discrete element method simulation of shield tunneling face stability in transparent clay

Huayang LEI, Yajie ZHANG, Yao HU, Yingnan LIU

Journal Article

High-order phase-field model with the local and second-order max-entropy approximants

Fatemeh AMIRI

Journal Article

Application of a weakly compressible smoothed particle hydrodynamics multi-phase model to non-cohesive

Rasoul MEMARZADEH, Gholamabbas BARANI, Mahnaz GHAEINI-HESSAROEYEH

Journal Article

A “Sequential Design of Simulations” approach for exploiting and calibrating discrete element simulations

Journal Article

Improving existing “reaching law” for better discrete control of seismically-excited building structures

Zhijun LI, Zichen DENG

Journal Article

Hydromechanical model for hydraulic fractures using XFEM

Bo HE

Journal Article

Application of coupled multi-body dynamics–discrete element method for optimization of particle damper

Danhui DAN, Qianqing WANG, Jiongxin GONG

Journal Article

A model reference adaptive control based method for actuator delay estimation in real-time testing

Cheng CHEN, James M. RICLES

Journal Article

Coupled solid-fluid FE-analysis of an embankment dam

Michael PERTL, Matthias HOFMANN, Guenter HOFSTETTER

Journal Article

Gained switching-based fuzzy sliding mode control for a discrete-time underactuated robotic system with

Hui LI, Ruiqin LI, Jianwei ZHANG

Journal Article

Discrete-event stochastic systems with correlated inputs: Modeling and performance evaluation

Journal Article