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Published in: Archive of Applied Mechanics 2/2019

28-09-2018 | Original

Inter-relationships among stiffness matrix components for general laminates with transverse cracks in oblique plies

Authors: N. D. Barulich, L. A. Godoy, P. M. Dardati

Published in: Archive of Applied Mechanics | Issue 2/2019

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Abstract

In this paper, nine inter-relationships linking the stiffness matrix components of symmetrical or unsymmetrical laminates having transverse matrix cracks in some of the off-axis plies is presented. The crack closure condition under membrane and bending deformations is established and used to obtain the inter-relationships. The derived crack closure conditions and inter-relationships are validated using a numerical model based on previous work by the authors. These inter-relationships include the eighteen stiffness matrix components and are exact within the assumptions made in the classical lamination theory. When using a two-scale finite element-based model, six loading cases would be needed to obtain the complete stiffness matrix. With the obtained inter-relationships, only four loading cases would be needed, thus saving a third of the total amount of information and computing time.

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Metadata
Title
Inter-relationships among stiffness matrix components for general laminates with transverse cracks in oblique plies
Authors
N. D. Barulich
L. A. Godoy
P. M. Dardati
Publication date
28-09-2018
Publisher
Springer Berlin Heidelberg
Published in
Archive of Applied Mechanics / Issue 2/2019
Print ISSN: 0939-1533
Electronic ISSN: 1432-0681
DOI
https://doi.org/10.1007/s00419-018-1470-y

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