A Micromorphic Elasto-plastic Model for granular materials

来源 :中国计算力学大会2018暨国际华人计算力学大会2018 | 被引量 : 0次 | 上传用户：bear81

【摘要】

：

This study proposes a micromorphic elasto-plastic continuum model for granular materials based on a micromechanics approach.In this model,a continuum material point is considered as a granular volume

【作者】

：

Xihua Chu Chenxi Xiu

【机构】

：

School of Civil Engineering,Wuhan University,Wuhan,Hubei,430072,China

【出处】

：

中国计算力学大会2018暨国际华人计算力学大会2018

【发表日期】

：

2018年10期

【关键词】

：

Granular materials Micromorphic continuum Microstructure Finite element method

下载到本地 , 更方便阅读

下载此文赞助VIP

声明 : 本文档内容版权归属内容提供方 , 如果您对本文有版权争议 , 可与客服联系进行内容授权或下架

论文部分内容阅读

　　This study proposes a micromorphic elasto-plastic continuum model for granular materials based on a micromechanics approach.In this model,a continuum material point is considered as a granular volume element whose deformation behavior is influenced by the translation and the rotation of particles.

其他文献

Research on the fracture propagation law of horizontal wells multi-cluster fracturing in shale gas r

In order to study the interference between fractures influence on the law of fracture propagation during horizontal wells multi-cluster fracturing in shale gas reservoir,anisotropic damage subroutine

会议

Multi-cluster fracturingFracture propagationShale gas reservoir

关于FLAC3D和ABAQUS在边坡稳定性分析中的比较

在土木工程中,FLAC3D 和ABAQUS 均是CAE 数值仿真软件,为研究两种软件在工程分析中的适用性,本文采用两种软件对开挖卸荷后的粘土公路边坡稳定性进行数值仿真分析。为保证结果的真实性、有效性,分析过程中均采用强度折减法计算边坡安全系数,同时对开挖边坡附近区域的点进行应力场和位移场的监测。

会议

FLAC3DABAQUS软件比较边坡分析强度折减法

Stability Analysis of Gabion Retaining Walls using Discontinuity Layout Optimization Technique

Determining the margin of safety and identifying the critical failure mechanism of gabion retaining walls is an important task in practice.Discontinuity layout optimization(DLO)is the revolutionary ge

会议

Gabion retaining wallDiscontinuity layout optimizationStabilityFailure mechan

JOINTED PIPE-SOIL INTERACTION DUE TO TUNNELING

Despite the convenience of tunnels for transportation in modern cities,ground movements induced by tunneling may cause pipeline deformations.One of the greatest challenges is the threat that lies in t

会议

Jointed pipelineFEMWinkler modelTunnelingsoil-pipe interaction

Effect of heterogeneity on mechanical and emission behaviors of stratified rock specimens

This paper investigates the influence of heterogeneity on mechanical and acoustic emission(AE)behaviors of stratified rock specimens under uniaxial compression using a digital image processing(DIP)bas

会议

Stratified rocksheterogeneitymechanical and acoustic emission characteristics

基于修正椭圆抛物双屈服面模型的土石混合料开挖边坡归一化变形量失稳判据

以西部典型土石混合料路堑开挖边坡为工程背景，针对特定开挖路堑边坡工点，设计开展大型三轴试验获得开挖工点边坡土体参数，比较分析不同本构模型对开挖边坡变形量及稳定性的影响，采用能够反映开挖施工过程及适用于土石混合料的修正双屈服面本构模型，研究边坡几何及物理因素对变形量的影响。

会议

失稳判据土石混合料开挖边坡有限元强度折减法

DEM modelling of plane Couette shear test of granular material considering particle breakage

Couette shear is the shear of an object between two infinite planes.Compared with direct shear and simple shear test,in Couette shear test,there is no need to set an artificial shear band or boundary

会议

Particle breakingDEMdensely arrayed BPMCouette shearshear band

基于非达西渗流的引水隧洞开挖稳定性分析

围岩的稳定性分析是引水隧洞开挖过程中的重要研究课题。本文基于非达西渗流—应力耦合理论，讨论了完整岩体和破碎岩体隧洞在开挖过程中的渗流场和塑性区变化规律，及其非达西渗流惯性系数对渗流场特性的影响。进而基于强度折减法和超载法，分析了锦屏二级深埋引水隧洞在开挖支护过程中的稳定性问题。

会议

非达西渗流强度折减法引水隧洞稳定性

Slope Stability Analysis Based on Strength Reduction Method,Gravity Increase Method and Modified Gra

Aiming at the problem that the safety factor calculated by conventional gravity increase method is larger than the strength reduction method,the modified gravity increase method is applied for slope s

会议

slope stabilitystrength reduction methodgravity increase methodmodified gravi

Study on Formation Mechanism of Hydraulic Fracturing Network of Layered Shale

Shale is a typical heterogeneous and anisotropic material whose properties are characterized primarily by locally oriented anisotropic clay minerals and naturally formed bedding planes.

会议

Hydraulic fractureXFEMNatural fractureLayered shaleFracture network

A Micromorphic Elasto-plastic Model for granular materials

与本文相关的学术论文