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VOŘECHOVSKÝ, M. CHUDOBA, R.
Original Title
Numerical Modeling of delayed activation and statistical size effect in multifilament yarns
Type
conference paper
Language
English
Original Abstract
The paper presents numerical studies of major sources of randomness as they occur in laboratory tensile tests of multi filament yarns of glass textile reinforcement for concrete. The main phe-nomenon under study is the length effect on the yarn tensile strength. The newly formulated de-terministic micromechanical model constitutes the stepping stone for stochastic simulation of strength and the whole response to tensile load. We study sources of randomness both across the yarn and along the filaments. The analyses are compared to theoretical and laboratory results. Emphasis is given to simulation of spatial variability of local strength by random fields and the existence of statistical length scales and modeling of slack induced by filament waviness. As the actual goal of the present work is to derive yarn characteristics relevant for crack bridges in ce-mentitious composites we systematically assess the significance of the studied sources of disorder in the context of extremely short bundle lengths.
Key words in English
multi-filament yarn, fiber bundle models, random field simulation, filament slack
Authors
VOŘECHOVSKÝ, M.; CHUDOBA, R.
RIV year
2005
Released
14. 6. 2005
Publisher
VUT v Brně
Location
Brno
ISBN
80-214-2853-8
Book
2nd International Symposium NON-TRADITIONAL CEMENT & CONCRETE
Pages from
439
Pages to
449
Pages count
11
BibTex
@inproceedings{BUT14689, author="Miroslav {Vořechovský} and Rostislav {Chudoba}", title="Numerical Modeling of delayed activation and statistical size effect in multifilament yarns", booktitle="2nd International Symposium NON-TRADITIONAL CEMENT & CONCRETE", year="2005", pages="439--449", publisher="VUT v Brně", address="Brno", isbn="80-214-2853-8" }