Title: Multiscale probabilistic modeling of a crack bridge in glass fiber reinforced concrete
Authors: Rypl, Rostislav
Vořechovský, Miroslav
Citation: Applied and Computational Mechanics. 2017, vol. 11, no. 1, p. 1-10.
Issue Date: 2017
Publisher: University of West Bohemia
Document type: článek
URI: http://hdl.handle.net/11025/26122
ISSN: 1802-680X (Print)
2336-1182 (Online)
Keywords: beton vyztužený skelnými vlákny;překlenutí trhlin;pevnost v tahu
Keywords in different language: glass fiber reinforced concrete;crack bridging;tensile strength
Abstract: The present paper introduces a probabilistic approach to simulating the crack bridging effects of chopped glass strands in cement-based matrices and compares it to a discrete rigid body spring network model with semi-discrete representation of the chopped strands. The glass strands exhibit random features at various scales, which are taken into account by both models. Fiber strength and interface stress are considered as random variables at the scale of a single fiber bundle while the orientation and position of individual bundles with respect to a crack plane are considered as random variables at the crack bridge scale. At the scale of the whole composite domain, the distribution of fibers and the resulting number of crack-bridging fibers is considered. All the above random effects contribute to the variability of the crack bridge performance and result in size-dependent behavior of a multiply cracked composite.
Rights: © 2017 University of West Bohemia. All rights reserved.
Appears in Collections:Volume 11, number 1 (2017)
Volume 11, number 1 (2017)

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