nligaStruct is an extension of NLIGA in aspect of isogeometric structural analysis. A framework for Bézier extraction of T-spline and NURBS is embedded in the simulation pipeline. Both Reissner-Mindlin and Kirchhoff-Love assumptions are considered in the case of static bending and free vibration analysis of thin-walled structures (plates and shells). The convergence behaviors of these two assumptions for both plate and shell are thoroughly studied and compared. Three types of hyperelastic materials, including St. Venant-Kirchhoff, incompressible neo-Hookean and compressible neo-Hookean, are employed in the large deformation of Kirchhoff-Love shells. A series of popular benchmark examples and their geometrical models are demonstrated in the package.

Citation:
Xiaoxiao Du, Gang Zhao, Ran Zhang, Wei Wang, Jiaming Yang. Numerical implementation for isogeometric analysis of thin-walled structures based on a Bézier extraction framework: nligaStruct. Thin-Walled Structures. 2022.

Features

  • Plate and shell
  • Bézier extraction
  • T-spline and NURBS
  • Reissner-Mindlin
  • Kirchhoff-Love
  • Static bending and free vibration
  • Large deformation
  • Hyperelastic materials
  • Incompressible and compressible

Project Samples

Pinched cylindrical shell Pinched cylindrical shell with free edges Pinched hemispherical shell Pullout of cylindrical shell Pinched semi-cylindrical shell

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Registered

2022-07-17
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