Numerical modelling of die and unconfined compactions of wet particles

Y. He, T. J. Evans, A. B. Yu, R. Y. Yang

Research output: Chapter in Book/Report/Conference proceedingConference PaperResearch

4 Citations (Scopus)

Abstract

A numerical method, based on the Discrete Element Method (DEM), is developed to simulate the closed-die compaction and unconfined compaction of wet granular materials. Elastic perfectly plastic are assumed for particles, local contacts are characterized by non-linear elastic and linear plastic deformation. The capillary force is explicitly considered. Solid bonds are introduced between contacting particles to account for the strength gain after closed-die compaction. The numerical model is described in detail. We also illustrate how the compact properties such as compressive strength and failure pattern are influenced by the bond strength and compaction pressure, which determine the mechanical and geometrical integrity of compact. The numerical results demonstrate a qualitative agreement with corresponding results from previous theoretical, experimental studies for the trend of stress-strain response and failure patterns under unconfined compaction. This study proves that solid bond model must be taken into account when modelling granular compaction process using DEM method.

Original languageEnglish
Title of host publicationNew Paradigm of Particle Science and Technology Proceedings of The 7th World Congress on Particle Technology
EditorsWei Ge, Yongsheng Han, Junwu Wang, Limin Wang, Xinhua Liu, Jiamao Zhou, Jinghai Li
Place of PublicationAmsterdam Netherlands
PublisherElsevier
Pages1390-1398
Number of pages9
DOIs
Publication statusPublished - 2015
Externally publishedYes
EventWorld Congress on Particle Technology (WCPT) 2014 - Beijing, China
Duration: 19 May 201422 May 2014
Conference number: 7th

Publication series

NameProcedia Engineering
PublisherElsevier
Volume102
ISSN (Electronic)1877-7058

Conference

ConferenceWorld Congress on Particle Technology (WCPT) 2014
Abbreviated titleWCPT 2014
Country/TerritoryChina
CityBeijing
Period19/05/1422/05/14

Keywords

  • Compaction
  • Discrete Element Method
  • Solid bonding
  • Wet granular material

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