Universality class of the fragmentation of plastic materials

F. Kun, G. Timár, J. Blömer, H. J. Herrmann

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

Abstract

We carry out an experimental and theoretical study of the fragmentation of polymeric materials by impacting polypropylene (PP) particles of spherical shape against a hard wall. Our experiments revealed that the mass distribution of fragments has a power law behavior with an exponent close to 12, which is significantly different from the known exponents of three-dimensional bulk materials. To understand the fragmentation of plastic materials we developed a three-dimensional discrete element model where the sample is represented as a random packing of spherical particles connected by elastic beams. The model reproduces both the large permanent deformation of the polymer during impact, and the novel value of the mass distribution exponent. Computer simulations revealed that the dominance of shear in the crack formation and the healing of compressed crack surfaces are the key features which give rise to the emergence of the novel universality class of fragmentation phenomena.

Original languageEnglish
Title of host publicationParticle-Based Methods II - Fundamentals and Applications
Pages130-138
Number of pages9
Publication statusPublished - 2011
Event2nd International Conference on Particle-Based Methods, PARTICLES 2011 - Barcelona, Spain
Duration: Oct 26 2011Oct 28 2011

Other

Other2nd International Conference on Particle-Based Methods, PARTICLES 2011
CountrySpain
CityBarcelona
Period10/26/1110/28/11

Fingerprint

fragmentation
plastics
exponents
mass distribution
surface cracks
crack initiation
healing
polypropylene
computerized simulation
fragments
shear
polymers

Keywords

  • DEM
  • Fracture
  • Fragmentation
  • Plastic

ASJC Scopus subject areas

  • Nuclear and High Energy Physics

Cite this

Kun, F., Timár, G., Blömer, J., & Herrmann, H. J. (2011). Universality class of the fragmentation of plastic materials. In Particle-Based Methods II - Fundamentals and Applications (pp. 130-138)

Universality class of the fragmentation of plastic materials. / Kun, F.; Timár, G.; Blömer, J.; Herrmann, H. J.

Particle-Based Methods II - Fundamentals and Applications. 2011. p. 130-138.

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

Kun, F, Timár, G, Blömer, J & Herrmann, HJ 2011, Universality class of the fragmentation of plastic materials. in Particle-Based Methods II - Fundamentals and Applications. pp. 130-138, 2nd International Conference on Particle-Based Methods, PARTICLES 2011, Barcelona, Spain, 10/26/11.
Kun F, Timár G, Blömer J, Herrmann HJ. Universality class of the fragmentation of plastic materials. In Particle-Based Methods II - Fundamentals and Applications. 2011. p. 130-138
Kun, F. ; Timár, G. ; Blömer, J. ; Herrmann, H. J. / Universality class of the fragmentation of plastic materials. Particle-Based Methods II - Fundamentals and Applications. 2011. pp. 130-138
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