Investigations on the viscoelastic behaviour of a human healthy heel pad: In vivo compression tests and numerical analysis:

摘要: The aim of this study was to investigate the viscoelastic behaviour human heel pad by comparing stress-relaxation curves obtained from a compression device used on an in vivo with those three-dimensional computer-based subject-specific model subjected external compression. based anatomy revealed magnetic resonance imaging 31-year-old healthy female. calcaneal fat tissue described viscohyperelastic model, while fibre-reinforced hyperelastic formulated for skin. All numerical analyses were performed interpret mechanical response tissues, loading conditions and displacement rate agreement experimental tests. tissues showed non-linear, characteristic hysteretic curves, viscous recovery phenomena. reliability investigations validated interpretation under application three pistons diameter 15, 20 40 mm, at same about 1.7 mm/s. maximum minimum relative errors found be less than 0.95 0.064, respectively.