Skip to Main content Skip to Navigation
Conference papers

Fast Fourier Transform computations and build-up of plastic deformation in 2D, elastic-perfectly plastic, pixelwise disordered porous media

Abstract : Stress and strain fields in a two-dimensional pixelwise disordered system are computed by a Fast Fourier Transform method. The system, a model for a ductile damaged medium, consists of an elastic-perfectly matrix containing void pixels. Its behavior is investigated under equibiaxial or shear loading. We monitor the evolution with loading of plastically deformed zones, and we exhibit a nucleation / growth / coalescence scenario of the latter. Identification of plastic ''clusters'' is eased by using a discrete Green function implementing equilibrium and continuity at the level of one pixel. Observed morphological regimes are put into correspondence with some features of the macroscopic stress / strain curves.
Complete list of metadatas

https://hal-cea.archives-ouvertes.fr/cea-00412544
Contributor : Yves-Patrick Pellegrini <>
Submitted on : Wednesday, September 2, 2009 - 4:15:48 AM
Last modification on : Tuesday, July 21, 2020 - 3:19:00 AM

Links full text

Identifiers

  • HAL Id : cea-00412544, version 1
  • ARXIV : 0802.2488

Citation

François Willot, Yves-Patrick Pellegrini. Fast Fourier Transform computations and build-up of plastic deformation in 2D, elastic-perfectly plastic, pixelwise disordered porous media. 11th International Symposium on Continuum Models and Discrete Systems CMDS 11, Jul 2007, Paris, France. pp.443-449. ⟨cea-00412544⟩

Share

Metrics

Record views

222