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Numerical simulation of crack propagation and coalescence in randomly distributed crack system

Numerical simulation of crack propagation and coalescence in randomly distributed crack system This paper discusses the crack propagation and coalescence behavior of distributed cracks using a numerical simulation. The cracks are initially distributed in a rectangle region. The directions and locations of the cracks are chosen at random, but the length is identical. The crack propagation from the initial distribution is analyzed under a uniaxial tension load using the body force method. The result indicated that the equivalent elastic moduli can be predicted analytically. The strength degradation behavior depends not only on the crack density but also on the number of cracks. The fracture energy analysis reveals that the main toughening mechanism is the ligamentary bridging in a cracked material. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Strength, Fracture and Complexity iospress

Numerical simulation of crack propagation and coalescence in randomly distributed crack system

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Publisher
IOS Press
Copyright
Copyright © 2003 by IOS Press, Inc
ISSN
1567-2069
eISSN
1875-9262
Publisher site
See Article on Publisher Site

Abstract

This paper discusses the crack propagation and coalescence behavior of distributed cracks using a numerical simulation. The cracks are initially distributed in a rectangle region. The directions and locations of the cracks are chosen at random, but the length is identical. The crack propagation from the initial distribution is analyzed under a uniaxial tension load using the body force method. The result indicated that the equivalent elastic moduli can be predicted analytically. The strength degradation behavior depends not only on the crack density but also on the number of cracks. The fracture energy analysis reveals that the main toughening mechanism is the ligamentary bridging in a cracked material.

Journal

Strength, Fracture and Complexityiospress

Published: Jan 1, 2003

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