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  4. Fast and accurate elastic analysis of laminated composite plates via isogeometric collocation and an equilibrium-based stress recovery approach
 
research article

Fast and accurate elastic analysis of laminated composite plates via isogeometric collocation and an equilibrium-based stress recovery approach

Patton, Alessia
•
Dufour, John-Eric
•
Antolin, Pablo  
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October 1, 2019
Composite Structures

A novel approach which combines isogeometric collocation and an equilibrium-based stress recovery technique is applied to analyze laminated composite plates. Isogeometric collocation is an appealing strong form alternative to standard Galerkin approaches, able to achieve high order convergence rates coupled with a significantly reduced computational cost. Laminated composite plates are herein conveniently modeled considering only one element through the thickness with homogenized material properties. This guarantees accurate results in terms of displacements and in-plane stress components. To recover an accurate out-of-plane stress state, equilibrium is imposed in strong form as a post-processing correction step, which requires the shape functions to be highly continuous. This continuity demand is fully granted by isogeometric analysis properties, and excellent results are obtained using a minimal number of collocation points per direction, particularly for increasing values of length-to-thickness plate ratio and number of layers.

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Type
research article
DOI
10.1016/j.compstruct.2019.111026
Web of Science ID

WOS:000480330400008

Author(s)
Patton, Alessia
Dufour, John-Eric
Antolin, Pablo  
Reali, Alessandro
Date Issued

2019-10-01

Published in
Composite Structures
Volume

225

Article Number

111026

Subjects

Mechanics

•

Materials Science, Composites

•

Materials Science

•

isogeometric collocation

•

splines

•

orthotropic materials

•

homogenization

•

laminated composite plates

•

stress recovery procedure

•

timoshenko beam problem

•

finite-element

•

nurbs

•

locking

•

approximations

•

methodology

•

formulation

•

simulation

•

continuity

•

quadrature

Editorial or Peer reviewed

REVIEWED

Written at

EPFL

EPFL units
MNS  
RelationURL/DOI

IsNewVersionOf

https://infoscience.epfl.ch/record/265012
Available on Infoscience
August 25, 2019
Use this identifier to reference this record
https://infoscience.epfl.ch/handle/20.500.14299/160631
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