A Parametric Study and Simulations in Quantifying Human Skin Hyperelastic Parameters

Mahmud, Jamaluddin; Holt, Catherine Avril; Evans, Samuel Lewin; Manan, Nor Fazli Adull; Chizari, Mahmoud

doi:10.1016/j.proeng.2012.07.353

Cited by 34 publications

(33 citation statements)

References 15 publications

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“…En los trabajos (Mahmud, 2012), (Mahmud, 2013) modelan la piel como un material monocapa utilizando el modelo de Ogden, sin embargo, la piel es un tejido multicapa (epidermis, dermis e hipodermis), se han ESTEC Conference Proceedings combinados ensayos y técnicas de obtención de imágenes para modelar de manera satisfactoria este comportamiento, vemos en los trabajos (Tran, 2007), (Su, 2009), donde utilizan un modelo Neo-Hookeano con el ensayo de indentación y la técnica de obtención de imágenes por resonancia magnética MRI para este tipo de comportamiento, lo podemos ver en la figura 1 y 2. Las constantes del material obtenidas se detallan en la Tabla 1.…”

Section: Casosunclassified

Revisión de Modelos Hiperelásticos utilizados en Tejidos

Moreno

Plazaola

González

et al. 2018

KEG

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This work is related to the hyperelastic models most used in soft tissue. The importance of obtaining accurate mechanical properties of tissues are of great interest for various medical applications, for example: in treatment of diseases and surgical simulations in real time. The aim of this literature review is to evaluate the models used for proposing a mathematical formulation and modelling the mechanical behaviour of a sequence of layers of soft tissues and your reply to undergo external actions of mechanical nature, in order to improve the techniques of characterization of soft tissues.Keywords: Biomechanical, Hyperelasticit;y, Mechanical Properties, Nonlinear elasticity, Soft Tissues. ResumenEl presente trabajo está relacionado con los modelos hiperelásticos utilizados para describir el comportamiento mecánico de los tejidos. La importancia de obtener las propiedades mecánicas precisas de los tejidos son de gran interés para diferentes aplicaciones médicas, por ejemplo: el tratamiento de enfermedades y simulaciones quirúrgicas en tiempo real. El objetivo de esta revisión literaria es evaluar los modelos utilizados para proponer una formulación matemática y poder modelar el comportamiento mecánico del material (secuencia de capas de tejidos) y su respuesta al someterse a acciones externas de naturaleza mecánica, con el fin de mejorar las técnicas de caracterización de los tejidos vivos.

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Section: Casosunclassified

Revisión de Modelos Hiperelásticos utilizados en Tejidos

Moreno

Plazaola

González

et al. 2018

KEG

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“…Since it is impossible to capture the full mechanical response of human skin in one single experiment, different types of experiments have been performed to partially capture this response. Most studies involved experiments on in vivo human skin, comprising uniaxial tensile (Mahmud et al, 2012;Delalleau et al, 2008b;Gambarotta et al, 2005), multiaxial tensile (Flynn et al, 2011(Flynn et al, , 2011(Flynn et al, , 2013Khatyr et al, 2004;Kvistedal and Nielsen, 2009), suction (Khatyr et al, 2006;Delalleau et al, 2008aDelalleau et al, , 2011Delalleau et al, , 2012Hendriks et al, 2003) and indentation (Groves et al, 2012;Delalleau et al, 2006;Kumar et al, 2015) experiments. Although it is preferable to measure skin in its natural environment, in vivo measurements have limitations for several reasons.…”

Section: Introductionmentioning

confidence: 99%

“…Other constitutive models described the mechanical behavior as linear elastic (Delalleau et al, 2006), nonlinear (hyper)elastic using Ogden (Groves et al, 2012(Groves et al, , 2013Jor et al, 2011;Li and Xiaoyu, 2016;Evans, 2009;Flynn et al, 2011Flynn et al, , 2011Karimi et al, 2015;Mahmud et al, 2012;Lapeer et al, 2010;Limbert, 2011), Mooney-Rivlin (Flynn et al, 2013;Hendriks et al, 2003), (extended) Neo-Hookean (Delalleau et al, 2008a(Delalleau et al, , 2011(Delalleau et al, , 2012, Kalman filters (Delalleau et al, 2008b), Tong-Fung (Kvistedal and Nielsen, 2009;Gambarotta et al, 2005) or viscoelastic (Lokshin and Lanir, 2009a;Khatyr et al, 2004;Holt et al, 2008;Bischoff, 2006;Karimi et al, 2016;Kumar et al, 2015). The necessity to capture a certain level of mechanical complexity with a constitutive model is dependent on the application.…”

Section: Introductionmentioning

confidence: 99%

A model of human skin under large amplitude oscillatory shear

Soetens

Vijven

Bader

et al. 2018

Journal of the Mechanical Behavior of Biomedical Materials

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A B S T R A C TSkin mechanics is of importance in various fields of research when accurate predictions of the mechanical response of skin is essential. This study aims to develop a new constitutive model for human skin that is capable of describing the heterogeneous, nonlinear viscoelastic mechanical response of human skin under shear deformation. This complex mechanical response was determined by performing large amplitude oscillatory shear (LAOS) experiments on ex vivo human skin samples. It was combined with digital image correlation (DIC) on the cross-sectional area to assess heterogeneity. The skin is modeled as a one-dimensional layered structure, with every sublayer behaving as a nonlinear viscoelastic material. Heterogeneity is implemented by varying the stiffness with skin depth. Using an iterative parameter estimation method all model parameters were optimized simultaneously. The model accurately captures strain stiffening, shear thinning, softening effect and nonlinear viscous dissipation, as experimentally observed in the mechanical response to LAOS. The heterogeneous properties described by the model were in good agreement with the experimental DIC results. The presented mathematical description forms the basis for a future constitutive model definition that, by implementation in a finite element method, has the capability of describing the full 3D mechanical behavior of human skin.

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“…Many numerical studies of the human skin exist in literatures. Focusing on skin properties, the studies ascertained the physical properties and constitutive law of the skin through comparison between the numerical analysis and experiments [11,12]. Further, there are studies where the wrinkles Ishino Takayuki, Sakuma Atsushi 64 of the skin [13,14] and fingerprints [15] were simulated by focusing on a skin structure.…”

Section: Introductionmentioning

confidence: 99%

Numerical Evaluation of Mechanical Stimulation on Skin due to Surface Texture of Contactant

Ishino

Sakuma

2017

J. Text. Eng.

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A texture that has a microstructure with arrangements of cyclic micrometric projections generates various effects on human skin owing to mutual contact. The mechanical effects, such as stimulus of the skin, owing to contact with such microstructures are complicated because of the skin structure itself. The evaluation of the effects is necessary for control and design of the microstructure. Since experimental measurements are relatively difficult, numerical analyses are effective for detailing and objectively evaluating the mechanical effects on human skin. For this reason, numerical analyses of the effects of surface textures on skin were performed in this study. In particular, differences caused by cyclic variations of the texture were ascertained for the evaluation. Pressure, von Mises stress, etc., of the skin sensory organs were ascertained by performing numerical modeling of the situations where the texture touches the skin. The results of the analyses showed several characteristic effects such as negative pressure at the boundary of the horny layer and epidermis. The negative pressure was increased according to the increase of texture cycle. The von Mises stress at shallow positions changed characteristically, whereas von Mises stress at deep positions decreased monotonously with an increase of texture cycle. The von Mises stress at a shallow position of the dermis had a local minimum value for a particular texture cycle without monotonous increasing or decreasing.

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A Parametric Study and Simulations in Quantifying Human Skin Hyperelastic Parameters

Cited by 34 publications

References 15 publications

Revisión de Modelos Hiperelásticos utilizados en Tejidos

Revisión de Modelos Hiperelásticos utilizados en Tejidos

A model of human skin under large amplitude oscillatory shear

Numerical Evaluation of Mechanical Stimulation on Skin due to Surface Texture of Contactant

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