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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 elementThe deformation of blocks is expressed by the combination of the deformation modes in 3MDEM.In this paper, the elastoplastic constitutive relationship of blocks is implemented on the 3MDEM platform

Keywords： mode discrete element method     elastoplastic     numerical method     discontinuum     contact    

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3D finite element method (FEM) simulation of groundwater flow during backward erosion piping

Kristine VANDENBOER,Vera van BEEK,Adam BEZUIJEN

Frontiers of Structural and Civil Engineering 2014, Volume 8, Issue 2,   Pages 160-166 doi: 10.1007/s11709-014-0257-7

Abstract: In this work, a 3D numerical approach of the groundwater flow leading to the erosion mechanism of backwardComparison of the 2D and 3D numerical results explicitly demonstrates the inherent 3D nature of the pipingThe results clearly indicate the superiority of the presented 3D numerical model compared to the establishedMoreover, the 3D numerical results enable a better understanding of the complex physical mechanism involved

Keywords： backward erosion piping     groundwater flow     3D finite element method (FEM)    

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Estimation of load and resistance factors using the third-moment method based on the 3P-lognormal distribution

Yan-Gang ZHAO, Zhao-Hui LU

Frontiers of Structural and Civil Engineering 2011, Volume 5, Issue 3,   Pages 315-322 doi: 10.1007/s11709-011-0117-7

Abstract: Load and resistance factors are generally obtained using the first order reliability method (FORM) inIn this article, the third-moment reliability index, based on the three-parameter lognormal (3P-lognormalA simple method based on the third-moment method for estimating load and resistance factors is then proposedUnlike the currently used method, the proposed method can be used to determine load and resistance factorsMoreover, the proposed method does not require the iterative computation of derivatives or any design

Keywords： load and resistance factors     third-moment method     three-parameter lognormal (3P-lognormal) distribution    

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Slope stability analysis based on a multigrid method using a nonlinear 3D finite element model

Yaoru LIU, Zhu HE, Bo LI, Qiang YANG

Frontiers of Structural and Civil Engineering 2013, Volume 7, Issue 1,   Pages 24-31 doi: 10.1007/s11709-013-0190-1

Abstract: The rigid-body limit equilibrium method cannot reflect the actual stress distribution in a rock mass,and the finite-element-based strength reduction method also has some problems with respect to convergenceTo address these problems, a multi-grid method was adopted in this study to establish a structural gridThis method can be used to determine the stability safety factor for any slip surface or slide blockAn ideal elastic–plastic incremental analysis method based on the Drucker–Prager yield criterion was

Keywords： slope     stability     multi-grid method     nonlinear     finite element method    

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Improvement of solidification model and analysis of 3D channel blockage with MPS method

Frontiers in Energy 2021, Volume 15, Issue 4,   Pages 946-958 doi: 10.1007/s11708-021-0754-z

Abstract: The moving particle semi-implicit (MPS) method is one of the Lagrangian-based particle methods for analyzingin this paper, a novel solidification model for analyzing melt flowing channel blockage with the MPS methodFurthermore, 3-D channel blockage analyses of a boiling water reactor (BWR) fuel support piece have been

Keywords： boiling water reactor (BWR)     severe accident     channel blockage     moving particle semi-implicit (MPS) method    

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Development of an H reduction and moderate oxidation method for 3,5-dimethylpyridine hydrogenation in

Frontiers of Chemical Science and Engineering 2022, Volume 16, Issue 12,   Pages 1807-1817 doi: 10.1007/s11705-022-2243-2

Abstract: The Ru/C catalyst prepared by impregnation method was used for hydrogenation of 3,5-dimethylpyridineTherefore, an in-situ H2 reduction and moderate oxidation method was developed to increaseMoreover, the influence of oxidation temperature on the developed method was investigated.showed that there existed an optimal Ru/RuOx ratio for the catalyst, and the highest 3,5The developed in-situ H2 reduction and moderate oxidation method eliminated the step

Keywords： reduction and moderate oxidation     in-situ reduction     non-in-situ reduction     hydrogenation of 3    

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Research on the method of cavitations resistance in a piezoelectric pump with 3-dimensional mesh structure

ZHANG Jian-hui, Bai Heng-jun, XIA Qi-xiao, NING Hong-gang, ONUKI Akiyoshi

Frontiers of Mechanical Engineering 2006, Volume 1, Issue 4,   Pages 429-433 doi: 10.1007/s11465-006-0052-9

Abstract: As a solution to this disadvantage, the CR3DMS (cavitations resistance with 3-dimensional mesh structure) method is developed, which is tested and verified to be effective on not only reducing the occurrenceIn conclusion, the pump with CR3DMS, on the relationship between flow and driving frequency and the relationship

Keywords： different     3-dimensional     occurrence     effective     Resistant-Layers    

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WO3 nanomaterials synthesized via a sol-gel method and calcination for use as a CO gas sensor

Diah SUSANTI,A.A. Gede Pradnyana DIPUTRA,Lucky TANANTA,Hariyati PURWANINGSIH,George Endri KUSUMA,Chenhao WANG,Shaoju SHIH,Yingsheng HUANG

Frontiers of Chemical Science and Engineering 2014, Volume 8, Issue 2,   Pages 179-187 doi: 10.1007/s11705-014-1431-0

Abstract: A CO gas sensor has been prepared from WO synthesized by a sol-gel method.

Keywords： WO3 nanomaterial     sol-gel     calcinations     CO gas sensor     sensitivity    

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An extended cell-based smoothed discrete shear gap method (XCS-FEM-DSG3) for free vibration analysis

M. H. NGUYEN-THOI,L. Le-ANH,V. Ho-HUU,H. Dang-TRUNG,T. NGUYEN-THOI

Frontiers of Structural and Civil Engineering 2015, Volume 9, Issue 4,   Pages 341-358 doi: 10.1007/s11709-015-0302-1

Abstract: A cell-based smoothed discrete shear gap method (CS-FEM-DSG3) was recently proposed and proven to beThe method improves significantly the accuracy of the solution due to softening effect of the cell-basedIn addition, due to using only three-node triangular elements generated automatically, the CS-FEM-DSG3functions of the extended finite element method (XFEM) to give a so-called extended cell-based smootheddiscrete shear gap method (XCS-FEM-DSG3).

Keywords： cracked Reissner-Mindlin shell     free vibration analysis     cell-based smoothed discrete shear gap method(CS-FEM-DSG3)     extended cell-based smoothed discrete shear gap method (XCS-FEM-DSG3)     smoothed finite element    

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Ductile extension of 3-D external circumferential cracks in pipe structures

Wuchao YANG, Xudong QIAN

Frontiers of Structural and Civil Engineering 2011, Volume 5, Issue 3,   Pages 294-303 doi: 10.1007/s11709-011-0115-9

Abstract: This study investigates the ductile fracture resistance of 3-D external circumferential cracks in theThe key parameter for the computational cell method, i.e., the initial porosity ratio , is calibratedThe fracture resistance along the 3-D semi-elliptical crack front is computed from the calibrated cellequivalent 2-D axi-symmetric model provides conservative estimations of the fracture resistance for 3-

Keywords： ductile fracture     computational cell method     G-T model     J-R curve    

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Digital high-efficiency print forming method and device for multi-material casting molds

Zhongde SHAN, Zhi GUO, Dong DU, Feng LIU, Wenjiang LI

Frontiers of Mechanical Engineering 2020, Volume 15, Issue 2,   Pages 328-337 doi: 10.1007/s11465-019-0574-6

Abstract: Sand mold 3D printing technology based on the principle of droplet ejection has undergone rapid developmentHowever, current sand mold 3D printing technology exhibits several problems, such as single-materialThis study proposes a novel high-efficiency print forming method and device for multi-material castingThe proposed method is specifically related to the integrated forming of two-way coating and printingshortens the manufacturing process for 3D-printed sand molds, increases sand mold strength by 63.8%,

Keywords： multi-material casting mold     3D printing     efficient print forming method    

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A zone-layered trimming method for ceramic core of aero-engine blade based on an advanced reconfigurable

Frontiers of Mechanical Engineering 2022, Volume 17, Issue 2, doi: 10.1007/s11465-022-0675-5

Abstract: The regional registration method is introduced based on the iterative closest point algorithm to registerA zonal and layering processing method for three-dimensional contours on complex surfaces is proposedThe results show that the laser system and the method proposed in this paper are suitable for trimmingCompared with the results of manual trimming, the method proposed in this paper has higher accuracy,The method mentioned above has been used in practical application with satisfactory results.

Keywords： ceramic parts trimming     computer-aided laser manufacturing     3D vision     reconfigurable laser processing    

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Method of internal 3D flow field numerical simulation for hydrodynamic torque converter

SHANG Tao, ZHAO Dingxuan, ZHANG Yuankun, GUO Xiangen, SHI Xiangzhong

Frontiers of Mechanical Engineering 2008, Volume 3, Issue 1,   Pages 86-90 doi: 10.1007/s11465-008-0012-7

Abstract: hydrodynamic torque converter and thoroughly understand the trait of inside flow, a numerical simulation methodof internal 3D flow for the three-element centrifugal hydrodynamic torque converter was systematicallyThe calculation method, and the proposed pressure and velocity distribution of the flow field, have practical

Keywords： velocity distribution     calculation     numerical simulation     three-element centrifugal     converter    

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Crowd modeling based on purposiveness and a destination-driven analysis method Research Articles

Ning Ding, Weimin Qi, Huihuan Qian,hhqian@cuhk.edu.cn

Frontiers of Information Technology & Electronic Engineering 2021, Volume 22, Issue 10,   Pages 1351-1369 doi: 10.1631/FITEE.2000312

Abstract: We represent the crowd with self-driven particles using a destination-driven analysis method.suitable descriptor for middle-density human crowds, and that the proposed destination-driven analysis methodand real data and videos of both human and animal crowds have been conducted to validate the proposed method

Keywords： 人群建模；智能视频监控；人群稳定性    

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Systematic engineering method for FY-3 satellite ground segment engineering

Dong Chaohua,Yang Zhongdong,Shi Jinming,Zhang Peng

Strategic Study of CAE 2013, Volume 15, Issue 10,   Pages 24-32

Abstract: style="text-align: justify;">For application purpose, this paper gave an introduction on designing FY-3function, planning the FY-3 satellite and the ground engineering system requirement as a whole with thesystematic engineering method, reasonably locating the receiving stations, and scientifically allocating

Keywords： FY-3 satellite     instrument capability     ground segment system     systematic engineering     over all design    

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Title Author Date Type Operation

3D mode discrete element method with the elastoplastic model

Wei HU, Feng JIN, Chong ZHANG, Jinting WANG

Journal Article

3D finite element method (FEM) simulation of groundwater flow during backward erosion piping

Kristine VANDENBOER,Vera van BEEK,Adam BEZUIJEN

Journal Article

Estimation of load and resistance factors using the third-moment method based on the 3P-lognormal distribution

Yan-Gang ZHAO, Zhao-Hui LU

Journal Article

Slope stability analysis based on a multigrid method using a nonlinear 3D finite element model

Yaoru LIU, Zhu HE, Bo LI, Qiang YANG

Journal Article

Improvement of solidification model and analysis of 3D channel blockage with MPS method

Journal Article

Development of an H reduction and moderate oxidation method for 3,5-dimethylpyridine hydrogenation in

Journal Article

Research on the method of cavitations resistance in a piezoelectric pump with 3-dimensional mesh structure

ZHANG Jian-hui, Bai Heng-jun, XIA Qi-xiao, NING Hong-gang, ONUKI Akiyoshi

Journal Article

WO3 nanomaterials synthesized via a sol-gel method and calcination for use as a CO gas sensor

Diah SUSANTI,A.A. Gede Pradnyana DIPUTRA,Lucky TANANTA,Hariyati PURWANINGSIH,George Endri KUSUMA,Chenhao WANG,Shaoju SHIH,Yingsheng HUANG

Journal Article

An extended cell-based smoothed discrete shear gap method (XCS-FEM-DSG3) for free vibration analysis

M. H. NGUYEN-THOI,L. Le-ANH,V. Ho-HUU,H. Dang-TRUNG,T. NGUYEN-THOI

Journal Article

Ductile extension of 3-D external circumferential cracks in pipe structures

Wuchao YANG, Xudong QIAN

Journal Article

Digital high-efficiency print forming method and device for multi-material casting molds

Zhongde SHAN, Zhi GUO, Dong DU, Feng LIU, Wenjiang LI

Journal Article

A zone-layered trimming method for ceramic core of aero-engine blade based on an advanced reconfigurable

Journal Article

Method of internal 3D flow field numerical simulation for hydrodynamic torque converter

SHANG Tao, ZHAO Dingxuan, ZHANG Yuankun, GUO Xiangen, SHI Xiangzhong

Journal Article

Crowd modeling based on purposiveness and a destination-driven analysis method

Ning Ding, Weimin Qi, Huihuan Qian,hhqian@cuhk.edu.cn

Journal Article

Systematic engineering method for FY-3 satellite ground segment engineering

Dong Chaohua,Yang Zhongdong,Shi Jinming,Zhang Peng

Journal Article