Granular Matter

, Volume 12, Issue 4, pp 411–416 | Cite as

Application of DEM to evaluate and compare process parameters for a particle failure under different loading conditions

Article
First Online:
Received:

Abstract

The paper presents an application of Discrete Element Modelling (DEM) in understanding the micro-process parameters of a particle failure under different loading conditions. A composite particle has been modelled using many primary particles to represent a quasi-homogeneous particle. Some of the examples of quasi-homogeneous particles are constituents of tablets, pellets, granules and concrete. These particles can behave differently under identical loading conditions even though they consist of same primary particles and proportions. This is a typical behaviour of such particles which is governed by the imperfections present in the particles. A DEM has been used to model the composite particle consisting of bi-modal distribution (smaller particles—matrices and larger particles—aggregates) of primary particles. The particle has been loaded under single plate compression, double plate compression and normal impact on different types of target. The single plate compression and normal impact experiments have also been performed. Process parameters like, fracture pattern, particle size distribution, liberation degree and new surface generation have been evaluated and compared. The results are applicable in understanding the particle failure under different processing operations like, transportation, handling and comminution. The results are also useful in selecting the better loading method for liberating aggregates from cheaper matrices for recycling.

Keywords

DEM Process parameters Compression Impact New surface generation Fracture 
This is a preview of subscription content, log in to check access.

Preview

Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.

References

  1. 1.
    Schönert K.: Breakage of spheres and circular discs. Powder Technol. 143–144, 2–18 (2004)Google Scholar
  2. 2.
    Arbiter N., Harris C.C., Stamboltzis G.A.: Single fracture of brittle spheres. Soc. Min. Eng. AIME Trans. 244, 118–133 (1969)Google Scholar
  3. 3.
    Kiss L., Schönert K.: Aufschlusszerkleinerung eines zweikomponentigen Modellstoffes unter einzelkornbeanspruchjung durch druck-und prallbeanspruchjung. Aufbereitungs-Technik 30(5), 223–230 (1980)Google Scholar
  4. 4.
    Khanal M., Schubert W., Tomas J.: DEM simulation of diametrical compression test on particle compounds. Granul. Matter 7, 83–90 (2005)MATHCrossRefGoogle Scholar
  5. 5.
    Gorham D.A., Salman A.D.: The failure of spherical particles under impact. Wear 258, 580–587 (2005)CrossRefGoogle Scholar
  6. 6.
    Tomas J., Schreier M., Gröger T., Ehlers S.: Impact crushing of concrete for, liberation and recycling. Powder Technol. 105, 39–51 (1999)CrossRefGoogle Scholar
  7. 7.
    Thornton C., Yin K.K., Adams M.J.: Numerical simulations of impact fracture and fragmentation of agglomerates. J. Phys. D Appl. Phys. 29, 424–435 (1996)CrossRefADSGoogle Scholar
  8. 8.
    Mishra B.K., Thornton C.: Impact breakage of a particle agglomerates. Int. J. Min. Process. 61, 225–239 (2001)CrossRefGoogle Scholar
  9. 9.
    Khanal M., Schubert W., Tomas J.: Ball impact and crack propagation simulations of particle compound material. Granul. Matter 5(4), 177–184 (2004)CrossRefGoogle Scholar
  10. 10.
    Antonyuk S., Tomas T., Heinrich S., Mörl L.: Breakage behaviour of spherical granulates by compression. Chem. Eng. Sci. 60, 4031–4044 (2005)CrossRefGoogle Scholar
  11. 11.
    Khanal M., Tomas J.: Effect of target walls on the breakage of composite particles. Chem. Eng. Technol. 31(4), 609–614 (2008)CrossRefGoogle Scholar
  12. 12.
    Particle Flow Code in 2 Dimensions Manual, Version 3.0. Itasca Consulting Group Inc., Minneapolis, US (2002)Google Scholar
  13. 13.
    Schubert W., Khanal M., Tomas J.: Impact crushing of particle–particle compounds—experiment and simulation. Int. J. Min. Process. 75(1–2), 41–52 (2005)CrossRefGoogle Scholar
  14. 14.
    Khanal M., Schubert W., Tomas J.: Experiment and simulation of breakage of particle compounds under compressive loading. Part. Sci. Technol. 23(4), 387–394 (2005)CrossRefGoogle Scholar
  15. 15.
    Khanal M., Schubert W., Tomas J.: Compression and impact loading experiments of high strength spherical composites. Int. J. Min. Process. 86(1–4), 104–113 (2008)CrossRefGoogle Scholar
  16. 16.
    Subero J., Ning Z., Ghadiri M., Thornton C.: Effect of interface energy on the impact strength of agglomerates. Powder Technol. 105, 66–73 (1999)CrossRefGoogle Scholar
  17. 17.
    Schönert K.: Role of fracture physics in understanding comminution phenomena. Trans. SME AMIE 252, 21–26 (1972)Google Scholar
  18. 18.
    Yoshikawa H., Sata T.: Measurement of tensile strength of granular brittle materials. Sci. pap. Inst. Phys. Chem. Res. 54(4), 389–393 (1960)Google Scholar

Copyright information

© Springer-Verlag 2010

Authors and Affiliations

  1. 1.Commonwealth Scientific and Industrial Research OrganizationCSIRO, Earth Science and Resource Engineering, Queensland Centre for Advanced TechnologiesKenmoreAustralia
  2. 2.Mechanical Process EngineeringThe Otto von Guericke University of MagdeburgMagdeburgGermany

Personalised recommendations