Lattice Discrete Particle Modeling of Concrete under Compressive Loading: Multiscale Experimental Approach for Parameter Determination
Publication: Journal of Engineering Mechanics
Volume 144, Issue 8
Abstract
Lattice discrete particle models (LDPM) effectively relate concrete heterogeneity in terms of coarse aggregate–paste structure to damage patterns and load-displacement response. Interest in this type of model is enhanced by its ability to overcome issues that plague traditional methods, such as mesh dependence and need for energy regularization. Herein, an experimental procedure is developed to identify the mechanical parameters defined at the concrete mesoscale. The bounding surface of the LDPM is modified to accept the mesoscale parameters as inputs. Based on the parameter values identified through the multiscale experimental campaign, the macroscopic response to compressive load is simulated. Accuracy of the approach is demonstrated through comparisons with experimental results.
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Acknowledgments
The authors acknowledge Michele Di Benedetto for the help with the experimental tests.
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Published In
Journal of Engineering Mechanics
Volume 144 • Issue 8 • August 2018
Copyright
©2018 American Society of Civil Engineers.
History
Received: Nov 7, 2017
Accepted: Jan 23, 2018
Published online: May 17, 2018
Published in print: Aug 1, 2018
Discussion open until: Oct 17, 2018
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