We present a continuum model to describe the reorientation of an anisotropic material structure, characterized by two fiber families able to modify their orientations following different evolution dynamics. The evolution equations are derived in a thermodynamically consistent way, and passive and active contributions to the reorientation process are identified. It is shown that a weaker extension of a well-known coaxiality result holds. The transversely isotropic and orthotropic cases are then recovered by imposing the proper constraint on the fiber rotation. Applications to biological experiments on cell layers under stretch are discussed, showing a good agreement between the model and the experimental results. Even though we focus on cell layers, our framework remains general and may be employed to describe reorientation in engineering materials.

Passive and active fiber reorientation in anisotropic materials / Ciambella, J.; Lucci, G.; Nardinocchi, P.; Preziosi, L.. - In: INTERNATIONAL JOURNAL OF ENGINEERING SCIENCE. - ISSN 0020-7225. - 176:(2022), p. 103688. [10.1016/j.ijengsci.2022.103688]

Passive and active fiber reorientation in anisotropic materials

Ciambella J.
Primo
;
Nardinocchi P.
Penultimo
;
2022

Abstract

We present a continuum model to describe the reorientation of an anisotropic material structure, characterized by two fiber families able to modify their orientations following different evolution dynamics. The evolution equations are derived in a thermodynamically consistent way, and passive and active contributions to the reorientation process are identified. It is shown that a weaker extension of a well-known coaxiality result holds. The transversely isotropic and orthotropic cases are then recovered by imposing the proper constraint on the fiber rotation. Applications to biological experiments on cell layers under stretch are discussed, showing a good agreement between the model and the experimental results. Even though we focus on cell layers, our framework remains general and may be employed to describe reorientation in engineering materials.
2022
Anisotropic materials; Cell orientation; Coaxiality; Fiber reorientation; Nonlinear elasticity; Stress fibers
01 Pubblicazione su rivista::01a Articolo in rivista
Passive and active fiber reorientation in anisotropic materials / Ciambella, J.; Lucci, G.; Nardinocchi, P.; Preziosi, L.. - In: INTERNATIONAL JOURNAL OF ENGINEERING SCIENCE. - ISSN 0020-7225. - 176:(2022), p. 103688. [10.1016/j.ijengsci.2022.103688]
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11573/1639421
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