Transition from straight to fractal cracks due to projectile penetration

Zoltán Halász, Frank Van Steeden, F. Kun

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

Abstract

We present a theoretical study of the fracture of two-dimensional disc-shaped samples due to projectile penetration focusing on the geometrical structure of the crack pattern. The penetration of a cone is simulated into a plate of circular shape using a discrete element model of heterogeneous brittle materials varying the speed of penetration in a broad range. As the cone penetrates a destroyed zone is created from which cracks run to the external boundary of the plate. Computer simulations revealed that in the low speed limit of loading two cracks are generated with nearly straight shape. Increasing the penetration speed the crack pattern remains regular, however, both the number of cracks and their fractal dimension increases. High speed penetration gives rise to a crack network such that the sample gets fragmented into a large number of pieces. We give a quantitative analysis of the evolution of the system from simple cracking through fractal cracks to fragmentation with a connected crack network.

Original languageEnglish
Title of host publicationKey Engineering Materials
Pages765-768
Number of pages4
Volume592-593
DOIs
Publication statusPublished - 2014
Event7th International Conference on Materials Structure and Micromechanics of Fracture, MSMF 2013 - Brno, Czech Republic
Duration: Jul 1 2013Jul 3 2013

Publication series

NameKey Engineering Materials
Volume592-593
ISSN (Print)10139826

Other

Other7th International Conference on Materials Structure and Micromechanics of Fracture, MSMF 2013
CountryCzech Republic
CityBrno
Period7/1/137/3/13

Fingerprint

Projectiles
Fractals
Cracks
Cones
Fractal dimension
Brittleness
Computer simulation
Chemical analysis

Keywords

  • Crack propagation
  • Discrete element model
  • Fractal
  • Fracture
  • Fragmentation

ASJC Scopus subject areas

  • Materials Science(all)
  • Mechanics of Materials
  • Mechanical Engineering

Cite this

Halász, Z., Van Steeden, F., & Kun, F. (2014). Transition from straight to fractal cracks due to projectile penetration. In Key Engineering Materials (Vol. 592-593, pp. 765-768). (Key Engineering Materials; Vol. 592-593). https://doi.org/10.4028/www.scientific.net/KEM.592-593.765

Transition from straight to fractal cracks due to projectile penetration. / Halász, Zoltán; Van Steeden, Frank; Kun, F.

Key Engineering Materials. Vol. 592-593 2014. p. 765-768 (Key Engineering Materials; Vol. 592-593).

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

Halász, Z, Van Steeden, F & Kun, F 2014, Transition from straight to fractal cracks due to projectile penetration. in Key Engineering Materials. vol. 592-593, Key Engineering Materials, vol. 592-593, pp. 765-768, 7th International Conference on Materials Structure and Micromechanics of Fracture, MSMF 2013, Brno, Czech Republic, 7/1/13. https://doi.org/10.4028/www.scientific.net/KEM.592-593.765
Halász Z, Van Steeden F, Kun F. Transition from straight to fractal cracks due to projectile penetration. In Key Engineering Materials. Vol. 592-593. 2014. p. 765-768. (Key Engineering Materials). https://doi.org/10.4028/www.scientific.net/KEM.592-593.765
Halász, Zoltán ; Van Steeden, Frank ; Kun, F. / Transition from straight to fractal cracks due to projectile penetration. Key Engineering Materials. Vol. 592-593 2014. pp. 765-768 (Key Engineering Materials).
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