Numerical and experimental analysis of particle fracture during solid particle erosion, part I: Modeling and experimental verification Articles uri icon

authors

  • HADAVI, VAHID
  • MORENO SANCHEZ, CARLOS EDGAR
  • PAPINI, MARCELLO

published in

publication date

  • June 2016

start page

  • 135

end page

  • 145

volume

  • 356-357

International Standard Serial Number (ISSN)

  • 0043-1648

Electronic International Standard Serial Number (EISSN)

  • 1873-2577

abstract

  • Most previous models of solid particle erosion have assumed the abrasives to be rigid, as opposed to deforming, and have largely ignored the effect of particle fracture and fragmentation. However, since particle fracture dissipates kinetic energy and may lead to secondary impact, it can affect the resulting erosion rate and associated mechanisms. In this paper, double pulsed laser shadowgraphy was used in order to record, for the first time, the impact, fracture, and rebound of 363 mu m SiC abrasive particles in a high speed air jet impacting an Al6061-T6 plate at incident velocities between 78 and 123 m/s. The impact and fracture of the abrasives was simulated using an Element Free Galerkin (EFG) formulation with a Johnson-Holmquist material model for the SiC particles, and smoothed particle hydrodynamics with a Johnson-Cook material model for the target.

keywords

  • particle fracture; solid particle erosion; shadowgraphy; element free galerkin (efg); johnson-holmquist; free galerkin methods; dynamic crack-propagation; single angular particles; finite-element-method; brittle materials; ductile materials; abrasive jet; strain rates; simulation; hydrodynamics