Detail publikačního výsledku

A micromechanical model of cyclic creep in brittle matrix composites under compressive loading

KOTOUL, M.

Originální název

A micromechanical model of cyclic creep in brittle matrix composites under compressive loading

Anglický název

A micromechanical model of cyclic creep in brittle matrix composites under compressive loading

Druh

Stať ve sborníku v databázi WoS či Scopus

Originální abstrakt

Mori-Tanaka approach is used to modelling metal particulate-reinforced brittle matrix composites under cyclic compressive loading. The J2 flow theory is considered as the relevant physical law of plastic flow in inclusions. A strong constraint exerted by matrix on inclusions causes that even the evanescent kinematical hardening rule does not predict any ratchetting of a composite. It is shown that the weakening constraint of the matrix caused by microfracture damage around inclusions is closely coupled with the plasticity of inclusion and leads to ratchetting even when the plastic deformation of inclusions is described by an isotropic hardening rule. A detailed parametric study has revealed that ratchetting is followed by either plastic or elastic shakedown, depending on the load amplitude, composite parameters and the mean microcracks length.

Anglický abstrakt

Mori-Tanaka approach is used to modelling metal particulate-reinforced brittle matrix composites under cyclic compressive loading. The J2 flow theory is considered as the relevant physical law of plastic flow in inclusions. A strong constraint exerted by matrix on inclusions causes that even the evanescent kinematical hardening rule does not predict any ratchetting of a composite. It is shown that the weakening constraint of the matrix caused by microfracture damage around inclusions is closely coupled with the plasticity of inclusion and leads to ratchetting even when the plastic deformation of inclusions is described by an isotropic hardening rule. A detailed parametric study has revealed that ratchetting is followed by either plastic or elastic shakedown, depending on the load amplitude, composite parameters and the mean microcracks length.

Klíčová slova

Ratchetting, Low Cycle Loading, Ceramics, Microfracturing

Klíčová slova v angličtině

Ratchetting, Low Cycle Loading, Ceramics, Microfracturing

Autoři

KOTOUL, M.

Vydáno

27.06.2001

Nakladatel

Vutium, Brno University of Technology

Místo

Vutium, Brno University of Technology, Brno

ISBN

80-214-1892-3

Kniha

Materials Structure & Micromechanics of Fracture

Strany od

355

Strany počet

13

BibTex

@inproceedings{BUT2924,
  author="Michal {Kotoul}",
  title="A micromechanical model of cyclic creep in brittle matrix composites under compressive loading",
  booktitle="Materials Structure & Micromechanics of Fracture",
  year="2001",
  number="1",
  pages="13",
  publisher="Vutium, Brno University of Technology",
  address="Vutium, Brno University of Technology, Brno",
  isbn="80-214-1892-3"
}