Publication result detail

Constitutive modeling of ratchetting of metal particulate-reinforced ceramic matrix composites

KOTOUL, M.

Original Title

Constitutive modeling of ratchetting of metal particulate-reinforced ceramic matrix composites

English Title

Constitutive modeling of ratchetting of metal particulate-reinforced ceramic matrix composites

Type

Peer-reviewed article not indexed in WoS or Scopus

Original Abstract

Brittle solids fail in compression by a process of progressive microfracture. If subjected to cyclic loading beyond the elastic range with nonzero mean stress, usually there is a cycle by cycle accumulation of inelasticstrain related to microfracturing in the direction of mean stress similarly like an accumulation of plastic strain in steels or other metals. This phenomenon is called cyclic creep or ratcheting. Using a suitable composite approach a response of representative volume element of composite may be modeled. It is proposed that the weakening constraint power of the matrix caused by microfracture damage around inclusions can reconcile the model predictions with experiment. introduce a microfracture damage by an approximative, self-consistent method. The microfracture damage is closely coupled with the plasticity of inclusions and provides additional inelastic strains. Numerical results are presented and compared with experimental data.

English abstract

Brittle solids fail in compression by a process of progressive microfracture. If subjected to cyclic loading beyond the elastic range with nonzero mean stress, usually there is a cycle by cycle accumulation of inelasticstrain related to microfracturing in the direction of mean stress similarly like an accumulation of plastic strain in steels or other metals. This phenomenon is called cyclic creep or ratcheting. Using a suitable composite approach a response of representative volume element of composite may be modeled. It is proposed that the weakening constraint power of the matrix caused by microfracture damage around inclusions can reconcile the model predictions with experiment. introduce a microfracture damage by an approximative, self-consistent method. The microfracture damage is closely coupled with the plasticity of inclusions and provides additional inelastic strains. Numerical results are presented and compared with experimental data.

Key words in English

Ratcheting, Low Cycle Loading,Ceramics, Microfracturing.

Authors

KOTOUL, M.

Released

01.01.2001

ISBN

0921-5093

Periodical

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING

Volume

319

Number

12

State

Swiss Confederation

Pages from

657

Pages count

5

URL

knihovna FSI VUT

BibTex

@article{BUT39917,
  author="Michal {Kotoul}",
  title="Constitutive modeling of ratchetting of metal particulate-reinforced ceramic matrix composites",
  journal="MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING",
  year="2001",
  volume="319",
  number="12",
  pages="5",
  issn="0921-5093",
  url="knihovna FSI VUT"
}