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Buffer capacity of granular matter to impact of spherical projectile based on discrete element method

Ying YAN, Pengfei LI, Shunying JI

Frontiers of Structural and Civil Engineering 2013, Volume 7, Issue 1,   Pages 50-54 doi: 10.1007/s11709-013-0186-x

Abstract: Granular matter possesses impact-absorbing property due to its energy dissipation character.To investigate the impact-absorbing capacity of granular matter, the discrete element method (DEM) isadopted to simulate the impact of a spherical projectile on to a granular bed.The dynamic responses of the projectile are obtained for both thin and thick granular bed.Determining a suitable bed thickness is crucial to the buffering effect of granular matter.

Keywords: granular matter     impact peak     buffer capacity     discrete element method     critical thickness    

Mesoscopic properties of dense granular materials: An overview

Qicheng SUN, Feng JIN, Guohua ZHANG

Frontiers of Structural and Civil Engineering 2013, Volume 7, Issue 1,   Pages 1-12 doi: 10.1007/s11709-013-0184-z

Abstract: A granular material is a conglomeration of discrete solid particles.However, for granular flows and solid-like states, the theory is still poorly understood because of theThe current theory is that the mesoscale characteristics define the key differences between granularWidespread interest in granular materials has arisen among physicists, and significant progress has beenA multiscale framework is then proposed for dense granular materials.

Keywords: granular matter     macroscopic structure     jamming phase transition    

Fluorescence spectroscopic studies of the effect of granular activated carbon adsorption on structuralproperties of dissolved organic matter fractions

Shuang XUE, Qingliang ZHAO, Liangliang WEI, Xiujuan HUI, Xiping MA, Yingzi LIN

Frontiers of Environmental Science & Engineering 2012, Volume 6, Issue 6,   Pages 784-796 doi: 10.1007/s11783-012-0436-5

Abstract: This work investigated the effect of granular activated carbon adsorption (GACA) on fluorescence characteristicsof dissolved organic matter (DOM) in secondary effluent, by means of excitation–emission matrix (EEM

Keywords: granular activated carbon adsorption     dissolved organic matter     fractionation     fluorescence    

Force fluctuations in sheared granular disks

Mingbo YUAN, Qicheng SUN, Feng JIN

Frontiers of Structural and Civil Engineering 2013, Volume 7, Issue 1,   Pages 46-49 doi: 10.1007/s11709-013-0189-7

Abstract: The internal structure established within granular materials, often observed as force chains, is dominantThese results help reveal the structure and mechanics of granular materials, and further investigations

Keywords: granular matter     force chain     stick and slip    

Visualization of force networks in 2D dense granular materials

Jianguo LIU, Qicheng SUN, Feng JIN,

Frontiers of Structural and Civil Engineering 2010, Volume 4, Issue 1,   Pages 109-115 doi: 10.1007/s11709-010-0003-8

Abstract: Dense granular matter is a conglomeration of discrete solid and closely packed particles.photoelastic technique was improved for determining stresses and strains in the assemblies of photoelastic granular

Keywords: granular matter     force chain     multiscale modeling    

Application of granular solid hydrodynamics to a well-graded unbound granular material undergoing triaxial

Shixiong SONG, Qicheng SUN, Feng JIN, Chuhan ZHANG

Frontiers of Structural and Civil Engineering 2013, Volume 7, Issue 1,   Pages 83-88 doi: 10.1007/s11709-012-0148-8

Abstract: Unbound granular materials (UGMs) are widely used as a base or a subbase in pavement construction.are generally well graded and exhibit a higher peak strength than that of conventional cohesionless granularBy using a simplified version of granular solid hydrodynamics (GSH), a set of GSH material constantsThe results indicate that the GSH theory is able to describe such a special type of granular materials

Keywords: granular solid hydrodynamics     unbound granular material (UGM)     triaxial tests    

Exploration on electrical resistance tomography in characterizing the slurry spatial distribution in cemented granular

Frontiers of Structural and Civil Engineering 2024, Volume 18, Issue 3,   Pages 365-379 doi: 10.1007/s11709-024-1049-3

Abstract: electrical resistance tomography (ERT) in characterizing the slurry spatial distribution in cemented granular

Keywords: electrical resistance tomography     cemented granular material     grouting     spatial distribution     Archie’    

Effects of shear force on formation and properties of anoxic granular sludge in SBR

Xinyan ZHANG, Binbin WANG, Qingqing HAN, Hongmei ZHAO, Dangcong PENG

Frontiers of Environmental Science & Engineering 2013, Volume 7, Issue 6,   Pages 896-905 doi: 10.1007/s11783-013-0539-7

Abstract: This paper reports the effects of shear force on anoxic granular sludge in sequencing batch reactorsanoxic granules in the SBR in order to investigate the effects of shear force on the formation of anoxic granulargranules with smaller diameters, high density and good settling ability were formed in the reactor, and 2) granularshear force, such as was applied in SBR1, this research demonstrated that: 1) the activity of anoxic granular

Keywords: denitrification     anoxic granular sludge     sequencing batch reactors (SBR)     shear force    

Resistance to salt stresses by aerobic granular sludge: sludge property and microbial community

Frontiers of Environmental Science & Engineering doi: 10.1007/s11783-024-1861-y

Abstract:

● Aerobic granular sludge could withstand long-term saline stresses

Keywords: Aerobic granular sludge     Long-term saline stresses     Performance     Sludge property     Microbial community    

Concept and application of anaerobic suspended granular sludge bed (SGSB) reactor for wastewater treatment

Mingxia ZHENG,Zhong YAN,Jiane ZUO,Kaijun WANG

Frontiers of Environmental Science & Engineering 2014, Volume 8, Issue 5,   Pages 797-804 doi: 10.1007/s11783-013-0597-x

Abstract: An analysis of the flow pattern of expanded granular sludge bed (EGSB) reactors shows that most EGSBA high-rate anaerobic suspended granular sludge bed (SGSB) reactor was then developed.

Keywords: expansion characteristic     high-rate bioreactor     anaerobic suspended granular sludge bed     expanded granular    

Methanogenic community structure in simultaneous methanogenesis and denitrification granular sludge

Yujiao Sun, Juanjuan Zhao, Lili Chen, Yueqiao Liu, Jiane Zuo

Frontiers of Environmental Science & Engineering 2018, Volume 12, Issue 4, doi: 10.1007/s11783-018-1067-2

Abstract:

• UASB with SMD granules was operated with high removal efficiency of COD and NO3--N.

Methanosaetaceae was absolute predominant methanogen in SMD granules.

• The methanogen quantity and activity decreased as C/N decreased from 20:1 to 5:1.

• Bacterial community succession happened with C/N decreasing.

Keywords: Simultaneous methanogenesis and denitrification (SMD)     Methanogens     Community structure     Diversity index     Granular    

A miniature triaxial apparatus for investigating the micromechanics of granular soils with

Zhuang CHENG, Jianfeng WANG, Matthew Richard COOP, Guanlin YE

Frontiers of Structural and Civil Engineering 2020, Volume 14, Issue 2,   Pages 357-373 doi: 10.1007/s11709-019-0599-2

Abstract: techniques, this apparatus can be used for investigation of the micro-scale mechanical behavior of granularX-ray μCT imaging techniques, is a powerful tool to investigate the micro-scale mechanical behavior of granular

Keywords: triaxial apparatus     X-ray μCT     in situ test     micro-scale mechanical behavior     granular soils    

Development of a constitutive model for rockfills and similar granular materials based on the disturbed

Mehdi VEISKARAMI, Ali GHORBANI, Mohammadreza ALAVIPOUR

Frontiers of Structural and Civil Engineering 2012, Volume 6, Issue 4,   Pages 365-378 doi: 10.1007/s11709-012-0178-2

Abstract: It was found that both the stress level and the shear stress ratio, like most of granular materials,

Keywords: constitutive model     granular material     rockfill     plasticity     disturbed state concept     stress level    

Two-scale modeling of granular materials: A FEM-FEM approach

Yun-Zhu CAI, Yu-Ching WU

Frontiers of Structural and Civil Engineering 2013, Volume 7, Issue 3,   Pages 304-315 doi: 10.1007/s11709-013-0213-y

Abstract: homogenization-based two-scale FEM-FEM model is developed to simulate compactions of visco-plastic granularThe granular structure consisting of two-dimensional grains is modeled by the microscopic finite elementThe method could be used in a variety of problems that can be represented using granular media.

Keywords: homogenization     two-scale     representative volume element     compaction     granular assembly     finite element method    

INDIAN PERSPECTIVE: SUSTAINABILITY OF BT COTTON IS A MATTER OF CONCERN NOW!

Frontiers of Agricultural Science and Engineering 2022, Volume 9, Issue 1,   Pages 146-149 doi: 10.15302/J-FASE-2021415

Title Author Date Type Operation

Buffer capacity of granular matter to impact of spherical projectile based on discrete element method

Ying YAN, Pengfei LI, Shunying JI

Journal Article

Mesoscopic properties of dense granular materials: An overview

Qicheng SUN, Feng JIN, Guohua ZHANG

Journal Article

Fluorescence spectroscopic studies of the effect of granular activated carbon adsorption on structuralproperties of dissolved organic matter fractions

Shuang XUE, Qingliang ZHAO, Liangliang WEI, Xiujuan HUI, Xiping MA, Yingzi LIN

Journal Article

Force fluctuations in sheared granular disks

Mingbo YUAN, Qicheng SUN, Feng JIN

Journal Article

Visualization of force networks in 2D dense granular materials

Jianguo LIU, Qicheng SUN, Feng JIN,

Journal Article

Application of granular solid hydrodynamics to a well-graded unbound granular material undergoing triaxial

Shixiong SONG, Qicheng SUN, Feng JIN, Chuhan ZHANG

Journal Article

Exploration on electrical resistance tomography in characterizing the slurry spatial distribution in cemented granular

Journal Article

Effects of shear force on formation and properties of anoxic granular sludge in SBR

Xinyan ZHANG, Binbin WANG, Qingqing HAN, Hongmei ZHAO, Dangcong PENG

Journal Article

Resistance to salt stresses by aerobic granular sludge: sludge property and microbial community

Journal Article

Concept and application of anaerobic suspended granular sludge bed (SGSB) reactor for wastewater treatment

Mingxia ZHENG,Zhong YAN,Jiane ZUO,Kaijun WANG

Journal Article

Methanogenic community structure in simultaneous methanogenesis and denitrification granular sludge

Yujiao Sun, Juanjuan Zhao, Lili Chen, Yueqiao Liu, Jiane Zuo

Journal Article

A miniature triaxial apparatus for investigating the micromechanics of granular soils with

Zhuang CHENG, Jianfeng WANG, Matthew Richard COOP, Guanlin YE

Journal Article

Development of a constitutive model for rockfills and similar granular materials based on the disturbed

Mehdi VEISKARAMI, Ali GHORBANI, Mohammadreza ALAVIPOUR

Journal Article

Two-scale modeling of granular materials: A FEM-FEM approach

Yun-Zhu CAI, Yu-Ching WU

Journal Article

INDIAN PERSPECTIVE: SUSTAINABILITY OF BT COTTON IS A MATTER OF CONCERN NOW!

Journal Article