TUHH Open Research
Help
  • Log In
    New user? Click here to register.Have you forgotten your password?
  • English
  • Deutsch
  • Communities & Collections
  • Publications
  • Research Data
  • People
  • Institutions
  • Projects
  • Statistics
  1. Home
  2. TUHH
  3. Publication References
  4. DEM simulations of amorphous irregular shaped micrometer-sized titania agglomerates at compression
 
Options

DEM simulations of amorphous irregular shaped micrometer-sized titania agglomerates at compression

Publikationstyp
Journal Article
Date Issued
2015-05-01
Author(s)
Kozhar, Sergii  
Dosta, Maksym  
Antonyuk, Sergiy  
Heinrich, Stefan  
Bröckel, Ulrich  
Institut
Mehrskalensimulation von Feststoffsystemen V-EXK1  
Feststoffverfahrenstechnik und Partikeltechnologie V-3  
TORE-URI
http://hdl.handle.net/11420/7187
Journal
Advanced powder technology  
Volume
26
Issue
3
Start Page
767
End Page
777
Citation
Advanced Powder Technology 3 (26): 767-777 (2015-05-01)
Publisher DOI
10.1016/j.apt.2015.05.005
Scopus ID
2-s2.0-84931561148
Bulk solids are exposed to time-dependent mechanical stressing due to particle-particle and particle-apparatus contact interactions during various manufacturing processes and transportation steps. These interactions can be described by discrete element method (DEM) based on the contact models of particles. Usually in DEM simulations the particles are assumed to be spheres and as a consequence shape effects are neglected. However, most bulk solids processed in industry consist of irregular shaped particles. Therefore, in order to improve accuracy of numerical simulation the real shapes of particles must be considered in DEM. In this work, amorphous irregular shaped micrometer-sized titanium dioxide agglomerates were investigated. The force-displacement curves at compression were obtained with the help of a self-designed experimental setup. Based on the experimental data, several material parameters were determined and implemented in viscoelastic and elastic-plastic contact models. To consider the shape effect in the estimation of contact parameters the DEM simulation of studied agglomerates was performed by multi-sphere approach and bonded-particle model. The shape and position of the agglomerates on the loading pin were obtained by X-ray computer tomography and used in DEM simulations. From the obtained results it was pointed out that the bonded-particle model based on Maxwell viscoelastic model gives the best agreement with experimental data from compression tests with titania agglomerates.
Subjects
Compression test
Discrete element modelling
Irregular shape
Titania
TUHH
Weiterführende Links
  • Contact
  • Send Feedback
  • Cookie settings
  • Privacy policy
  • Impress
DSpace Software

Built with DSpace-CRIS software - Extension maintained and optimized by 4Science
Design by effective webwork GmbH

  • Deutsche NationalbibliothekDeutsche Nationalbibliothek
  • ORCiD Member OrganizationORCiD Member Organization
  • DataCiteDataCite
  • Re3DataRe3Data
  • OpenDOAROpenDOAR
  • OpenAireOpenAire
  • BASE Bielefeld Academic Search EngineBASE Bielefeld Academic Search Engine
Feedback