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

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216305%3A26210%2F01%3APU20372" target="_blank" >RIV/00216305:26210/01:PU20372 - isvavai.cz</a>
Result on the web
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DOI - Digital Object Identifier
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Result language
angličtina
Original language name
A micromechanical model of cyclic creep in brittle matrix composites under compressive loading
Original language description
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 bymatrix 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 coupledwith 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.
Czech name
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Czech description
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Project
<a href="/en/project/GA101%2F99%2F0829" target="_blank" >GA101/99/0829: Micromechanics and nonphenomenological constitutive relations of composites with brittle matrix in low cycle compression-compression conditions</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year
2001
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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