On the numerical modelling of bond for the failure analysis of reinforced concrete

Grassl, P. , Johansson, M. and Leppänen, J. (2018) On the numerical modelling of bond for the failure analysis of reinforced concrete. Engineering Fracture Mechanics, 189, pp. 13-26. (doi: 10.1016/j.engfracmech.2017.10.008)

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The structural performance of reinforced concrete relies heavily on the bond between reinforcement and concrete. In nonlinear finite element analyses, bond is either modelled by merged, also called perfect bond, or coincident with slip, also called bond-slip, approaches. Here, the performance of these two approaches for the modelling of failure of reinforced concrete was investigated using a damage-plasticity constitutive model in LS-DYNA. Firstly, the influence of element size on the response of tension-stiffening analyses with the two modelling approaches was investigated. Then, the results of the two approaches were compared for plain and fibre reinforced tension stiffening and a drop weight impact test. It was shown that only the coincident with slip approach provided mesh insensitive results. However, both approaches were capable of reproducing the overall response of the experiments in the form of load and displacements satisfactorily for the meshes used.

Item Type:Articles
Glasgow Author(s) Enlighten ID:Grassl, Dr Peter
Authors: Grassl, P., Johansson, M., and Leppänen, J.
College/School:College of Science and Engineering > School of Engineering > Infrastructure and Environment
Journal Name:Engineering Fracture Mechanics
ISSN (Online):1873-7315
Published Online:23 October 2017
Copyright Holders:Copyright © 2017 Elsevier, Ltd.
First Published:First published in Engineering Fracture Mechanics 189:13-26
Publisher Policy:Reproduced in accordance with the copyright policy of the publisher

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