Isogeometric Stress, Vibration and Stability Analysis of In-Plane Laminated Composite Structures

S. Faroughi, E. Shafei, D. Schillinger

Research output: Contribution to journalArticlepeer-review

9 Scopus citations

Abstract

We present a computational study that develops isogeometric analysis based on higher-order smooth NURBS basis functions for the analysis of in-plane laminated composites. Focusing on the stress, vibration and stability analysis of angle-ply and cross-ply 2D structures, we compare the convergence of the strain energy error and selected stress components, eigen-frequencies and buckling loads according to overkill solutions. Our results clearly demonstrate that for in-plane laminated composite structures, isogeometric analysis is able to provide the same accuracy at a significantly reduced number of degrees of freedom with respect to standard C0 finite elements. In particular, we observe that the smoothness of spline basis functions enables high-quality stress solutions, which are superior to the ones obtained with conventional finite elements.

Original languageEnglish (US)
Article number1850070
JournalInternational Journal of Structural Stability and Dynamics
Volume18
Issue number5
DOIs
StatePublished - May 1 2018

Bibliographical note

Funding Information:
D. Schillinger gratefully acknowledges support from the National Science Foundation through grant CISE-1565997 and the NSF CAREER Award No. 1651577.

Publisher Copyright:
© 2018 World Scientific Publishing Company.

Keywords

  • Laminated in-plane composites
  • buckling
  • isogeometric analysis
  • vibration

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