Elastoplastic Damaging Model for Adhesive Anchor Systems. I: Theoretical Formulation and Numerical Implementation
Publication: Journal of Engineering Mechanics
Volume 137, Issue 12
Abstract
In this and in the companion paper, the mechanical response of adhesive anchor systems is theoretically and numerically predicted and experimentally observed. The theoretical prediction is on the basis of an elastoplastic damaging model formulated to predict the structural response associated with the development of a fracture in adhesive anchor systems. This part describes the analytical model developed in the framework of a thermodynamically consistent theory, which assumes adhesion where the structure is sound, and friction in correspondence with the fracture. Isotropic damage is considered. The model can predict the structural behavior at the interface between two surfaces of ductile, brittle, or quasi-brittle materials. The Helmholtz free energy is written to model the materials’ hardening or softening. Isotropic damage is considered, and the possible effects of dilatancy are taken into account, including nonassociative flow rules. The formulation is implemented into the finite-element code FEAP. In the companion paper, the new model is adopted to predict the mechanical response to the pullout force of postinstalled rebar chemically bonded in concrete. The analytical model and the numerical implementation are experimentally validated by several pullout tests, which are monitored by using an acoustic-emission technique.
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Acknowledgments
The first author conducted part of this research while visiting the University of Pittsburgh under a Study Abroad Fellowship of the University of Palermo’s School of Engineering. The support of the University of Pittsburgh through startup funds available to the corresponding author is also acknowledged.
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Information & Authors
Information
Published In
Journal of Engineering Mechanics
Volume 137 • Issue 12 • December 2011
Pages: 854 - 861
Copyright
© 2011 American Society of Civil Engineers.
History
Received: Aug 13, 2010
Accepted: Jun 18, 2011
Published online: Jun 21, 2011
Published in print: Dec 1, 2011
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