Publication detail
NUMERICAL ESTIMATION OF MICRO-CRACK PATHS IN POLYMER PARTICULATE COMPOSITE
MAJER, Z. NÁHLÍK, L.
Czech title
Numerické modelování šíření mikro-trhlin v částicových kompozitních materiálech s polymerní matricí
English title
NUMERICAL ESTIMATION OF MICRO-CRACK PATHS IN POLYMER PARTICULATE COMPOSITE
Type
conference paper
Language
en
Original abstract
Determination of composite mechanical behavior is one of important part during the composite tailoring. The aim of the present work was to estimate a micro-crack behavior in a polymer particulate composite. The composite was investigated by means of the finite element method -using ANSYS software. A two-dimensional three-phase finite element model was developed to analyze the crack growth behavior. The assumptions of the linear elastic fracture mechanics were considered and the Maximum Tangential Stress (MTS) criterion was used to predict the direction of the crack propagation. The effect of the elastic modulus of the interphase on the micro-crack propagation was investigated. The properties of matrix and particles were taken from experiment. It was shown that the interphase properties influence the stress intensity factor KI as well as the micro-crack paths. The results of this paper can contribute to a better understanding of the micro-crack propagation in particulate composites with respect to the interphase.
Czech abstract
Cílem předkládané práce bylo odhadnout chování trhlin šířících se v polymerních kompozitech. Byl vytvořen 2D numerický model který byl pomocí metody konečných prvků analyzován v programu ANSYS za předpokladů lineárně-elastické lomové mechaniky. Vlastnosti matrice i částic byly určeny experimentálně. Výsledky této práce přispívají k lepšímu pochopení lomových vlastností kompozitních materiálů.
English abstract
Determination of composite mechanical behavior is one of important part during the composite tailoring. The aim of the present work was to estimate a micro-crack behavior in a polymer particulate composite. The composite was investigated by means of the finite element method -using ANSYS software. A two-dimensional three-phase finite element model was developed to analyze the crack growth behavior. The assumptions of the linear elastic fracture mechanics were considered and the Maximum Tangential Stress (MTS) criterion was used to predict the direction of the crack propagation. The effect of the elastic modulus of the interphase on the micro-crack propagation was investigated. The properties of matrix and particles were taken from experiment. It was shown that the interphase properties influence the stress intensity factor KI as well as the micro-crack paths. The results of this paper can contribute to a better understanding of the micro-crack propagation in particulate composites with respect to the interphase.
Keywords in English
Polymer Composite; Fracture Mechanics; Interphase; Finite Element Method
RIV year
2014
Released
12.05.2014
ISBN
978-80-214-4871-1
Book
Engineering Mechanics 2014
Edition number
2014
Pages from–to
376–379
Pages count
4
BIBTEX
@inproceedings{BUT119302,
author="Zdeněk {Majer} and Luboš {Náhlík},
title="NUMERICAL ESTIMATION OF MICRO-CRACK PATHS IN POLYMER PARTICULATE COMPOSITE",
booktitle="Engineering Mechanics 2014",
year="2014",
month="May",
pages="376--379",
isbn="978-80-214-4871-1"
}