Please use this identifier to cite or link to this item: https://hdl.handle.net/10356/106298
Title: Static and free-vibration analyses of cracks in thin-shell structures based on an isogeometric-meshfree coupling approach
Authors: Nguyen-Thanh, Nhon
Li, Weidong
Zhou, Kun
Keywords: DRNTU::Engineering::Mechanical engineering
Meshfree Method
Isogeometric Analysis
Issue Date: 2018
Source: Nguyen-Thanh, N., Li, W., & Zhou, K. (2018). Static and free-vibration analyses of cracks in thin-shell structures based on an isogeometric-meshfree coupling approach. Computational Mechanics, 62(6), 1287-1309. doi:10.1007/s00466-018-1564-y
Series/Report no.: Computational Mechanics
Abstract: This paper develops a coupling approach which integrates the meshfree method and isogeometric analysis (IGA) for static and free-vibration analyses of cracks in thin-shell structures. In this approach, the domain surrounding the cracks is represented by the meshfree method while the rest domain is meshed by IGA. The present approach is capable of preserving geometry exactness and high continuity of IGA. The local refinement is achieved by adding the nodes along the background cells in the meshfree domain. Moreover, the equivalent domain integral technique for three-dimensional problems is derived from the additional Kirchhoff–Love theory to compute the J-integral for the thin-shell model. The proposed approach is able to address the problems involving through-the-thickness cracks without using additional rotational degrees of freedom, which facilitates the enrichment strategy for crack tips. The crack tip enrichment effects and the stress distribution and displacements around the crack tips are investigated. Free vibrations of cracks in thin shells are also analyzed. Numerical examples are presented to demonstrate the accuracy and computational efficiency of the coupling approach.
URI: https://hdl.handle.net/10356/106298
http://hdl.handle.net/10220/48880
ISSN: 0178-7675
DOI: 10.1007/s00466-018-1564-y
Rights: © 2018 Springer-Verlag GmbH Germany, part of Springer Nature. All rights reserved. This paper was published in Computational Mechanics and is made available with permission of Springer-Verlag GmbH Germany, part of Springer Nature.
Fulltext Permission: open
Fulltext Availability: With Fulltext
Appears in Collections:MAE Journal Articles

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