Estimation of the macroscopic stress-strain curve of a particulate composite with a crosslinked polymer matrix

0375101 - ÚFM 2012 RIV US eng J - Journal Article
Náhlík, Luboš - Hutař, Pavel - Dušková, Miroslava - Dušek, Karel - Máša, B.
Estimation of the macroscopic stress-strain curve of a particulate composite with a crosslinked polymer matrix.
Mechanics of Composite Materials. Roč. 47, č. 6 (2012), s. 627-634. ISSN 0191-5665. E-ISSN 1573-8922
R&D Projects: GA ČR GA106/08/1409
Institutional research plan: CEZ:AV0Z40500505; CEZ:AV0Z20410507
Keywords : finite element analysis * effective elastic properties * mechanical properties
Subject RIV: JI - Composite Materials
Impact factor: 0.436, year: 2012

The main focus of a present paper is an estimation of the macroscopic stress-strain behavior of a particulate composite. The particulate composite with a crosslinked polymer matrix in a rubbery state filled by an alumina-based mineral filler is investigated by means of the finite element method. A hyperelastic material behavior of the matrix is modeled by the Mooney-Rivlin material model. Numerical models on the basis of unit cells are developed. An assumption of the existence of the discontinuity (breaking) in the matrix at higher loading levels is taken into account to obtain a more accurate estimation of the stress-strain behavior of the particulate composite investigated. The numerical results obtained are compared with experimental stress-strain curve and good agreement has been found. The paper can contribute to a better understanding of the behavior and failure of particulate composites with a polymer matrix.
Permanent Link: http://hdl.handle.net/11104/0207852