A refined dynamic finite-strain shell theory for incompressible hyperelastic materials : equations and two-dimensional shell virtual work principle

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review

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Detail(s)

Original languageEnglish
Article number20200031
Journal / PublicationProceedings of the Royal Society A: Mathematical, Physical and Engineering Sciences
Volume476
Issue number2237
Online published27 May 2020
Publication statusPublished - May 2020

Abstract

Based on previous work for the static problem, in this paper, we first derive one form of dynamic finite-strain shell equations for incompressible hyperelastic materials that involve three shell constitutive relations. In order to single out the bending effect as well as to reduce the number of shell constitutive relations, a further refinement is performed, which leads to a refined dynamic finite-strain shell theory with only two shell constitutive relations (deducible from the given three-dimensional (3D) strain energy function) and some new insights are also deduced. By using the weak formulation of the shell equations and the variation of the 3D Lagrange functional, boundary conditions and the two-dimensional shell virtual work principle are derived. As a benchmark problem, we consider the extension and inflation of an arterial segment. The good agreement between the asymptotic solution based on the shell equations and that from the 3D exact one gives verification of the former. The refined shell theory is also applied to study the plane-strain vibrations of a pressurized artery, and the effects of the axial pre-stretch, pressure and fibre angle on the vibration frequencies are investigated in detail.

Research Area(s)

  • Artery, Dimension-reduction method, Incompressible hyperelastic material, Shell theory

Citation Format(s)

A refined dynamic finite-strain shell theory for incompressible hyperelastic materials : equations and two-dimensional shell virtual work principle. / Yu, Xiang; Fu, Yibin; Dai, Hui-Hui.

In: Proceedings of the Royal Society A: Mathematical, Physical and Engineering Sciences, Vol. 476, No. 2237, 20200031, 05.2020.

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review