An experimental study of nonlinear rate-dependent behaviour of skeletal muscle to obtain passive mechanical properties.

Proceedings of the Institution of Mechanical Engineers. Part H, Journal of Engineering in Medicine
Sanaz S HashemiAkbar Rasoulian

Abstract

Accurate modelling of biological tissues has been a significant need for analysis of the human body. In this article, a comprehensive in vitro experimental study has been done on the fresh bovine skeletal muscle before the onset of rigour mortis in order to provide an experimental description of passive skeletal muscle properties in three dimensions. Different situations including various deformation modes, different loading rates and loading directions are tested to consider all features of skeletal muscle behaviour. Based on the nonlinear continuum mechanics, a three-dimensional visco-hyperelastic model is introduced which considers all aspects of skeletal muscle's features such as nonlinear hyperelastic, time-dependent behaviour, anisotropy and quasi-incompressibility. Visco-hyperelastic material constants are obtained for passive behaviour of the muscle based on genetic algorithm optimization method via comparing the theoretical and experimental results. Experiments show that the rate of loading affects the configuration of experimental curves considerably. It could be also concluded that compression-tension asymmetry, as well as anisotropic behaviour, of the muscle is due to fibres orientation. Obtained experimental result...Continue Reading

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Citations

Sep 30, 2021·Biomedical Materials·Gurpreet Singh, Arnab Chanda

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