Dual-parameter optimisation of the elastic properties of skin

A. Delalleau, G. Josse and J. Lagarde

Computer Methods in Biomechanics and Biomedical Engineering, 2012, vol. 15, issue 1, 83-92

Abstract: This paper presents a procedure for characterising the mechanical properties of skin using stochastic inverse identification. It is based on the minimisation of a cost function relative to the comparison between experimental suction experiments and their corresponding finite element models. Two different models are compared: a classical single-layer approach and a dual-layer medium which account for both the dermis and the hypodermis. Finite element results are used to construct the pre-optimisation database which is required for the inverse analysis. To compare the calculations, the entire identification is based on a dual-parameter optimisation procedure: for the single-layer approach a quadratic hyperelastic constitutive equation is used, whereas for the dual-layer medium a simple neo-Hookean potential is used. Theoretical conclusions, which are developed first, are then compared with actual case studies.

Date: 2012
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DOI: 10.1080/10255842.2011.633904

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