On the implementation of a wrinkling, hyperelastic membrane model for skin and other materials.

Full Abstract

A number of researchers have studied the mechanical properties of skin and developed constitutive models to describe its behaviour. Typically, many of these studies have concentrated on the uniaxial tensile behaviour of the skin, on the grounds that it will wrinkle under in-plane compression and have minimal stiffness. However, although there is a substantial body of literature on wrinkling models, the practical implementation of such a model of skin in a finite element setting has not been widely addressed. This paper presents computational details of a wrinkling, hyperelastic membrane model and aspects of its implementation and areas requiring further research are discussed. The model is based on an Ogden constitutive model, which provides accurate results at moderate strains, but it would be straightforward to implement other constitutive models such as the Fung or Arruda-Boyce models using a similar approach. Example results are presented which demonstrate that the model can provide a good approximation to experimental data. The model has many other possible applications, both for biological materials and for other thin hyperelastic membranes.

Author information

Author/s: Evans, S L (SL);

Affiliation: School of Engineering, Cardiff University, The Parade, Cardiff, UK. EvansSL6(-atsign-)cardiff.ac.uk

Journal and publication information

Publication Type: Journal Article

Journal: Computer methods in biomechanics and biomedical engineering (Comput Methods Biomech Biomed Engin), published in England. (Language: eng)

Reference: 2009-Jun; vol 12 (issue 3) : pp 319-32

Dates: Created 2009/04/27; Completed 2009/06/18;

PMID: 19199169, status: MEDLINE (last retrieval date: 6/18/2009, IMS Date: )

Sourced from the National Library of Medicine. Abstract text and other information may be subject to copyright.

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