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Science and Engineering of Composite Materials

Editor-in-Chief: Hoa, Suong V.

Editorial Board Member: Hamada, Hiroyuki / Brandt, Andrzej M. / Duc, Nguyen Dinh / Ehrenstein, Gottfried Wilhelm / Hui, David / Lee, L. James / Medraj, Mamoun / Nakai, Asami / Nicolais, Luigi / Seferis, James C. / Tan, Kiang Hwee / Ton-That, Minh Tan / Xiao, Xinran / Zako, Masaru / Zhong, W.H. Katie

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2191-0359
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Volume 22, Issue 2 (Mar 2015)

Issues

Size-dependent behavior of laminates with curvilinear fibers made by automated fiber placement

Mahdi Arian Nik
  • Department of Mechanical Engineering, McGill University, Macdonald Engineering Building, 817 Sherbrooke West, Montreal, QC, H3A 0C3, Canada
  • Other articles by this author:
  • De Gruyter OnlineGoogle Scholar
/ Larry Lessard
  • Department of Mechanical Engineering, McGill University, Macdonald Engineering Building, 817 Sherbrooke West, Montreal, QC, H3A 0C3, Canada
  • Other articles by this author:
  • De Gruyter OnlineGoogle Scholar
/ Damiano Pasini
  • Corresponding author
  • Department of Mechanical Engineering, McGill University, Macdonald Engineering Building, 817 Sherbrooke West, Montreal, QC, H3A 0C3, Canada
  • Email
  • Other articles by this author:
  • De Gruyter OnlineGoogle Scholar
Published Online: 2014-12-02 | DOI: https://doi.org/10.1515/secm-2014-0167

Abstract

Variable stiffness laminates can be manufactured using curvilinear fiber paths. A curvilinear fiber path is generally defined based on the plate size and has a curvature that is dependent on the plate size. In practice, however, the fiber path must satisfy manufacturing constraints, such as the minimum turning radius imposed by the automated fiber placement machine, thereby limiting the possible amount of fiber steering. In this work, we studied the effect of the plate size on the structural properties of a plate manufactured with curvilinear fibers. We considered four plate sizes, which were designed by a constant curvature fiber path. We optimized the plates for both maximum buckling load and in-plane stiffness. The results showed that the in-plane stiffness of the plate was not controlled by the plate size, whereas the buckling load was highly affected by the curvature of the fiber path. Hence, the potential of a buckling load increase reduced for plate sizes smaller than the minimum turning radius. In addition, for a given maximum curvature of the fiber path, the influence of a complex layup on the buckling load was marginal.

Keywords: automated fiber placement; fiber path curvature; gaps and overlaps; multi-objective optimization; size-dependent

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About the article

Corresponding author: Damiano Pasini, Department of Mechanical Engineering, McGill University, Macdonald Engineering Building, 817 Sherbrooke West, Montreal, QC, H3A 0C3, Canada, e-mail:


Received: 2014-05-30

Accepted: 2014-09-27

Published Online: 2014-12-02

Published in Print: 2015-03-01


Citation Information: Science and Engineering of Composite Materials, ISSN (Online) 2191-0359, ISSN (Print) 0792-1233, DOI: https://doi.org/10.1515/secm-2014-0167.

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