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Bridging the Length Scales in Models for Crack Predictions in Hardening Concrete Structures

Published online by Cambridge University Press:  01 February 2011

Eddy A.B. Koenders  and
Klaas Van Breugel
Eddy A.B. Koenders
Affiliation:
Structural and Building Engineering
Klaas Van Breugel
Affiliation:
Micromechanical LaboratoryDelft University of TechnologyFaculty of Civil Engineering, Stevinweg 1, 2628 CN Delft, The Netherlands
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Abstract

With models being developed at different levels of observation, length scales become an issue. In particular for simulation models that have to line-up and be compatible, this issue requires due attention. Different approaches can be adopted to bridge these length scales, each with their own pros and cons. In this contribution, two different approaches to deal with the scale differences in models for hardening concrete structures will be presented. Based on the parameters involved in the stress calculation of hardening concrete (macro)structures, the approaches are clarified. The first approach is based on the “bridging” concept whereas the second approach follows the Ribbon concept. Both concepts are discussed in terms of length scale bridging and its consequences for the modelling results. The paper ends with a discussion about the parameter variations related to the different length scales by means of a probabilistic approach.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 882: Symposium EE – Linking Length Scales in the Mechanical Behavior of Materials , 2005 , EE2.9
Copyright
Copyright © Materials Research Society 2005

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References

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