Fracture Toughness for Microcracking in a Viscoelastic Particulate Composite
Publication: Journal of Engineering Mechanics
Volume 125, Issue 6
Abstract
Fracture toughness for microcracking in a viscoelastic particulate composite is derived theoretically from the relationship between a continuum damage model and a micromechanical model. The continuum model presented by Park et al. and the micromechanical model presented by Schapery, which account for viscoelasticity and growing damage, are reviewed and compared in this paper. The condition for local microcrack growth is linked to the evolution law for damage growth in the homogenized continuum. Local microcrack growth is governed by an energy-based fracture criterion. Damage growth in the continuum is described by a phenomenological evolution law determined from an experiment. The resulting fracture toughness for asphalt concrete decreases rapidly with loading duration.
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References
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Information
Published In
Journal of Engineering Mechanics
Volume 125 • Issue 6 • June 1999
Pages: 722 - 725
History
Published online: Jun 1, 1999
Published in print: Jun 1999
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