The anisotropic material constitutive models for the human cornea

Long Yuan Li*, Brian Tighe

*Corresponding author for this work

Research output: Contribution to journalArticle

Abstract

This paper presents an anisotropic analysis model for the human cornea. The model is based on the assumption that the fibrils in the cornea are organised into lamellae, which may have preferential orientation along the superior-inferior and nasal-temporal directions, while the alignment of lamellae with different orientations is assumed to be random. Hence, the cornea can be regarded as a laminated composite shell. The constitutive equation describing the relationships between membrane forces, bending moments, and membrane strains, bending curvatures are derived. The influences of lamella orientations and the random alignment of lamellae on the stiffness coefficients of the constitutive equation are discussed.

Original languageEnglish
Pages (from-to)223-230
Number of pages8
JournalJournal of Structural Biology
Volume153
Issue number3
DOIs
Publication statusPublished - 1 Mar 2006

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Cornea
Membranes
Nose
Direction compound

Keywords

  • Anisotropy
  • Biomechanics
  • Collagen fibrils
  • Constitutive model
  • Cornea

Cite this

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The anisotropic material constitutive models for the human cornea. / Li, Long Yuan; Tighe, Brian.

In: Journal of Structural Biology, Vol. 153, No. 3, 01.03.2006, p. 223-230.

Research output: Contribution to journalArticle

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AU - Tighe, Brian

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AB - This paper presents an anisotropic analysis model for the human cornea. The model is based on the assumption that the fibrils in the cornea are organised into lamellae, which may have preferential orientation along the superior-inferior and nasal-temporal directions, while the alignment of lamellae with different orientations is assumed to be random. Hence, the cornea can be regarded as a laminated composite shell. The constitutive equation describing the relationships between membrane forces, bending moments, and membrane strains, bending curvatures are derived. The influences of lamella orientations and the random alignment of lamellae on the stiffness coefficients of the constitutive equation are discussed.

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KW - Biomechanics

KW - Collagen fibrils

KW - Constitutive model

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