Engineering Computations: Volume 32 Issue 4

Multiscale hydro-mechanical analysis of unsaturated granular materials using bridging scale method

Ke Wan, Xikui Li

The purpose of this paper is to extend the bridge scale method (BSM) developed for granular materials with only the solid phase to that taking into account the effects of wetting…

Multiscale properties of dense granular materials

Chuanqi Liu, Qicheng Sun, Guohua Zhang

Granular materials possess multiscale structures, i.e. micro-scales involving atoms and molecules in a solid particle, meso-scales involving individual particles and their…

Characteristic lengths in Cosserat continuum modeling of granular materials

Wenxiong Huang, Ke Xu

Cosserat continuum models are motivated by modeling size effects in materials with micro-structure. While elastic Cosserat continuum models can reproduce size effects in…

DEM analyses of shear band in granular materials

Mingjing Jiang, Wangcheng Zhang

Shear-induced strain localization in granular materials has been a hot topic under intensive research during the last four decades. However, the micromechanical process and…

A yield function for granular materials based on microstructures

Sihong Liu, Zijian Wang, Yishu Wang, Liujiang Wang, Zhongzhi Fu

– The purpose of this paper is to propose a new yield function for granular materials based on microstructures.

Effects of density ratio and diameter ratio on penetration of rotation projectile obliquely impacting a granular medium

Xiaoyan Ye, Dengming Wang, Xiaojing Zheng

Granular material exhibits rich dynamical behaviors under impacting, and its impacting dynamical process is seriously influenced by many factors. The purpose of this paper is to…

Numerical study of concrete mixing transport process and mixing mechanism of truck mixer

Yuanqiang Tan, Rong Deng, Y T Feng, Hao Zhang, Shengqiang Jiang

The purpose of this paper is to establish a new two-phase Discrete Element Method (DEM) model to investigate the movement of fresh concrete which consists of mortar and aggregate…

Asymmetric local velocity distribution in a driven granular gas

Yanpei Chen, Pierre Evesque, Meiying Hou

The purpose of this paper is to investigate the local feature of driven granular gases in event-driven molecular dynamic simulation, in order to achieve spatial profiles of local…

2D particle contact-based meshfree method in CDEM and its application in geotechnical problems

Chun Feng, Shi-hai Li, Eugenio Onate

Continuum-based discrete element method is an explicit numerical method, which is a combination of block discrete element method (DEM) and FEM. When simulating large deformation…

Discrete modeling of rockfill materials considering the irregular shaped particles and their crushability

Wei Zhou, Gang Ma, Xiao-Lin Chang, Yin Duan

The purpose of this paper is to discretely model rockfill materials considering the irregular shape of the particles and their crushability. The scientific goal was to investigate…

Analysis of ice load on conical structure with discrete element method

Shunying Ji, Shaocheng Di, Shewen Liu

In oil/gas exploitations of ice-covered cold regions, conical offshore structures are designed to reduce ice force and to avoid the ice-induced intense vibrations of vertical…

Particles deposition on microfiltration permeable boundary: Modeling and simulation with two-ways coupling sphere model in a turbulent flow

Wen-Juan Zhang, Xue-Hua Ruan, Gao-Hong He, Yong-Liang Ma, Yuan-Fa Liu

The permeate flux in microfiltration (MF) declines sharply with time due to membrane fouling, which seriously restricts its use in industrial applications. The purpose of this…

Numerical simulation of impinging jet flows by modified MPS method

Zhenyuan Tang, Decheng Wan

The jet impingement usually accompanying large interface movement is studied by the in-house solver MLParticle-SJTU based on the modified moving particle semi-implicit (MPS…

A comparative study of different baffles on mitigating liquid sloshing in a rectangular tank due to a horizontal excitation

Jiaru Shao, Shangming Li, Zirui Li, Moubin Liu

The purpose of this paper is to investigate different baffles on mitigating liquid sloshing in a rectangular tank due to a horizontal excitation and to find out the optimal…

Guest editorial

Y T Feng, Xikui Li, Yuanqiang Tan, Shunying Ji