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

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216305%3A26210%2F01%3APU20381" target="_blank" >RIV/00216305:26210/01:PU20381 - isvavai.cz</a>

Výsledek na webu

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DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

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

Popis výsledku v původním jazyce

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 compositemay 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.

Název v anglickém jazyce

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

Popis výsledku anglicky

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 compositemay 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.

Druh

J_x - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)

CEP obor

JI - Kompositní materiály

OECD FORD obor

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Projekt

<a href="/cs/project/GA101%2F99%2F0829" target="_blank" >GA101/99/0829: Mikromechanika a nefenomenologické konstitutivní modely kompozitů s křehkou matricí v podmínkách víceosého nízkocyklického tlakového zatěžování</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2001

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Materials Science and Engineering

ISSN

0921-5093

e-ISSN

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Svazek periodika

319

Číslo periodika v rámci svazku

12

Stát vydavatele periodika

CZ - Česká republika

Počet stran výsledku

5

Strana od-do

657-661

Kód UT WoS článku

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EID výsledku v databázi Scopus

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