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Multiscale Homogenization Analysis of Alkali–Silica Reaction (ASR) Effect in Concrete Article

Roozbeh Rezakhani, Mohammed Alnaggar, Gianluca Cusatis

Engineering 2019, Volume 5, Issue 6,   Pages 1139-1154 doi: 10.1016/j.eng.2019.02.007

Abstract: In this study, ASR damage in concrete is considered within the lattice discrete particle model (LDPM), a mesoscale mechanical model that simulates concrete at the scale of the coarse aggregate pieces.is employed to simulate the macroscale effects of ASR, while ASR-LDPM is utilized as the mesoscale modeldegradation of prisms in compression and four-point bending beams is evaluated by both the mesoscale modelIn all the numerical analyses, different RVE sizes with different inner particle realizations are considered

Keywords： Multiscale homogenization     Representative volume element     Alkali–silica reaction     Lattice discrete particlemodel    

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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: With the application of the particle damping technology to cable vibration attenuation, the rootlessIn 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 ADAMSThe simulation results demonstrate the damping efficiency of rootless particle damper under differentand reveal the influence of the design parameters on its performance, including the filling ratio, particle

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

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Advances in Numerical Simulation of Demolition Blasting

Xie Xianqi,Liu Jun,Jia Yongsheng,Sun Jinshan

Strategic Study of CAE 2014, Volume 16, Issue 11,   Pages 20-27

Abstract: Furthermore, the solid lattice model in the frame of DEM, which was developed by the author together

Keywords： demolition blasting     numerical simulation     discrete element method     solid lattice model    

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Flow behavior of non-spherical particle flowing in hopper

He TAO,Wenqi ZHONG,Baosheng JIN

Frontiers in Energy 2014, Volume 8, Issue 3,   Pages 315-321 doi: 10.1007/s11708-014-0331-9

Abstract: Ellipsoidal particles flowing in the hopper were simulated by using the discrete element method (DEM)The contact detection algorithm and equations for ellipsoidal particle motion in hopper were developedThe velocity of spherical particle is larger than that of ellipsoidal.

Keywords： discrete element method     ellipsoidal particle     flow behavior     hopper    

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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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Discrete element method modeling of corn-shaped particle flow in rectangular hopper

He TAO, Baosheng JIN, Wenqi ZHONG, Xiaofang WANG,

Frontiers of Structural and Civil Engineering 2010, Volume 4, Issue 2,   Pages 267-275 doi: 10.1007/s11709-010-0035-0

Abstract: Discrete element method (DEM) was developed to simulate the corn-shaped particles flow in the hopper.The corn-shaped particle was described by four overlapping spheres.Contact force and gravity force were considered when establishing the model.

Keywords： discrete        element          method         (DEM)             non-spherical    

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Particle-scale simulation of fluidized bed with immersed tubes

ZHAO Yongzhi, JIANG Maoqiang, CHENG Yi

Frontiers of Chemical Science and Engineering 2008, Volume 2, Issue 3,   Pages 341-345 doi: 10.1007/s11705-008-0046-8

Abstract: complex geometry, the boundary element method was incorporated into the implementation of a combined modelof computational fluid dynamics and discrete element method.The transient simulation results showed particle and bubble dynamics.

Keywords： unfavorable     computational     gas-solid     particle     discrete    

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Multi-scale investigation of active failure for various modes of wall movement

Frontiers of Structural and Civil Engineering 2021, Volume 15, Issue 4,   Pages 961-979 doi: 10.1007/s11709-021-0738-4

Abstract: the transition of retained backfills from at-rest condition to the active state is modeled using the discreteDEM allows conducting virtual experiments, with which the variation of particle and boundary propertiesFor each model, cumulative rotations of single particles are tracked, and the results are used to analyzepressure coefficients and coordination numbers, as respective macro and micro behavior indicators, on particleand deformation mechanisms are discussed with reference to the associated modes of wall movement and particle

Keywords： discrete-element modelling     granular materials     retaining walls     particle shape     arching    

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Influence mechanism of dynamic and static liquid bridge forces on particle deposition behaviors in solar

Xueqing LIU, Xiaodong ZHAO, Luyi LU, Jianlan LI

Frontiers in Energy 2021, Volume 15, Issue 2,   Pages 499-512 doi: 10.1007/s11708-021-0742-3

Abstract: In this paper, the influence mechanism of the dynamic and static liquid bridge forces on particle depositionIn addition, the expression and physical meaning of the particle critical separation velocity are proposedHowever, the dynamic liquid bridge force can act as a resistance force for the particle motion processThe particle critical separation velocity describes the relative size of the collision-rebound effect

Keywords： dust deposition     discrete element method (DEM)     photovoltaic mirrors     solar energy    

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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: This study applies the principles of computational fluid dynamics (CFD) to predict the particle and pollutantA standard turbulence model is used to resolve flow, and a discrete phase model (DPM) is utilized toexamine the particle clarification response.CFD results closely follow physical model results across the entire range of flow rates.mechanistic behavior of unit operations by means of three dimensional (3-D) hydraulic profiles and particle

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

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Effect of adjusted mesoscale drag model on flue gas desulfurization in powder-particle spouted beds

Frontiers of Chemical Science and Engineering 2022, Volume 16, Issue 6,   Pages 909-920 doi: 10.1007/s11705-021-2100-8

Abstract: An energy minimum multiscale model was adjusted to simulate the mesoscale structure of the flue gas desulfurizationprocess in a powder-particle spouted bed and verified experimentally.The obtained results revealed that the spout morphology simulated by the adjusted mesoscale drag modelIn addition, more thorough gas radial mixing was achieved using the adjusted mesoscale drag model.was 1.5 times higher than that obtained by the homogeneous drag model during the simulation of water

Keywords： adjusted mesoscale drag model     particle image velocimetry     water vaporization     desulfurization reaction    

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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, influencerange, and support force of the shield tunneling face under different burial depth conditions, whereas particle

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

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Microdamage study of granite under thermomechanical coupling based on the particle flow code

Frontiers of Structural and Civil Engineering   Pages 1413-1427 doi: 10.1007/s11709-023-0953-2

Abstract: In this study, an improved temperature-dependent linear parallel bond model is introduced under the frameworkof a particle flow simulation.thermomechanical coupling tests are then conducted to calibrate the micro-parameters of the proposed modelWith this improved model, the thermodynamic response and underlying cracking behavior of a deep-buried

Keywords： thermomechanical coupling effect     granite     improved linear parallel bond model     thermal property     particle    

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Particle swarm optimization model to predict scour depth around a bridge pier

Shahaboddin SHAMSHIRBAND, Amir MOSAVI, Timon RABCZUK

Frontiers of Structural and Civil Engineering 2020, Volume 14, Issue 4,   Pages 855-866 doi: 10.1007/s11709-020-0619-2

Abstract: Therefore, this paper aims to develop new equations using particle swarm optimization as a metaheuristicTo improve the efficiency of the proposed model, individual equations are derived for laboratory andComparing the results of the proposed model with those of existing regression-based equations revealMoreover, the ratio of pier width to flow depth and ratio of 50 (mean particle diameter) to flow depth

Keywords： scour depth     bridge design and construction     particle swarm optimization     computational mechanics     artificial    

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Title Author Date Type Operation

Multiscale Homogenization Analysis of Alkali–Silica Reaction (ASR) Effect in Concrete

Roozbeh Rezakhani, Mohammed Alnaggar, Gianluca Cusatis

Journal Article

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

Danhui DAN, Qianqing WANG, Jiongxin GONG

Journal Article

Advances in Numerical Simulation of Demolition Blasting

Xie Xianqi,Liu Jun,Jia Yongsheng,Sun Jinshan

Journal Article

Flow behavior of non-spherical particle flowing in hopper

He TAO,Wenqi ZHONG,Baosheng JIN

Journal Article

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

Wu REN, Yunxin WU, Zhaowei ZHANG

Journal Article

Discrete element method modeling of corn-shaped particle flow in rectangular hopper

He TAO, Baosheng JIN, Wenqi ZHONG, Xiaofang WANG,

Journal Article

Particle-scale simulation of fluidized bed with immersed tubes

ZHAO Yongzhi, JIANG Maoqiang, CHENG Yi

Journal Article

Multi-scale investigation of active failure for various modes of wall movement

Journal Article

Influence mechanism of dynamic and static liquid bridge forces on particle deposition behaviors in solar

Xueqing LIU, Xiaodong ZHAO, Luyi LU, Jianlan LI

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

Effect of adjusted mesoscale drag model on flue gas desulfurization in powder-particle spouted beds

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

Microdamage study of granite under thermomechanical coupling based on the particle flow code

Journal Article

Particle swarm optimization model to predict scour depth around a bridge pier

Shahaboddin SHAMSHIRBAND, Amir MOSAVI, Timon RABCZUK

Journal Article