In this paper the mechanical response of soft collagenous tissues with regular fiber arrangement (RSCTs) is described by means of a nanoscale model and a two-step micro-macro homogenization technique. The non-linear collagen constitutive behaviour is modelled at the nanoscale by a novel approach accounting for entropic mechanisms as well as stretching effects occurring in collagen molecules. Crimped fibers are reduced to equivalent straight ones at the microscale and the constitutive response of RSCTs at the macroscale is formulated by homogenizing a fiber reinforced material. This approach is suitable for different RSCTs (such as tendon, periodontal ligament and aortic media) and results effective and accurate as proved by the excellent agreement between available experimental data and computed results, obtained relating model parameters directly with histological and morphological evidences.

Maceri, F., Marino, M., Vairo, G. (2009). A nano-micro-macro mechanical model for the analysis of soft collagenous tissues. ??????? it.cilea.surplus.oa.citation.tipologie.CitationProceedings.prensentedAt ??????? 19ème Congrès française de mécanique, Marseille - France.

A nano-micro-macro mechanical model for the analysis of soft collagenous tissues

MACERI, FRANCO;VAIRO, GIUSEPPE
2009

Abstract

In this paper the mechanical response of soft collagenous tissues with regular fiber arrangement (RSCTs) is described by means of a nanoscale model and a two-step micro-macro homogenization technique. The non-linear collagen constitutive behaviour is modelled at the nanoscale by a novel approach accounting for entropic mechanisms as well as stretching effects occurring in collagen molecules. Crimped fibers are reduced to equivalent straight ones at the microscale and the constitutive response of RSCTs at the macroscale is formulated by homogenizing a fiber reinforced material. This approach is suitable for different RSCTs (such as tendon, periodontal ligament and aortic media) and results effective and accurate as proved by the excellent agreement between available experimental data and computed results, obtained relating model parameters directly with histological and morphological evidences.
19ème Congrès française de mécanique
Marseille - France
2009
Rilevanza internazionale
contributo
2009
Settore ICAR/08 - Scienza delle Costruzioni
English
soft collagenous tissues mechanics; nanoscale entropic mechanisms; collagen molecule elastic modelling; fiber-reinforced materials; homogenization
Intervento a convegno
Maceri, F., Marino, M., Vairo, G. (2009). A nano-micro-macro mechanical model for the analysis of soft collagenous tissues. ??????? it.cilea.surplus.oa.citation.tipologie.CitationProceedings.prensentedAt ??????? 19ème Congrès française de mécanique, Marseille - France.
Maceri, F; Marino, M; Vairo, G
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Utilizza questo identificativo per citare o creare un link a questo documento: http://hdl.handle.net/2108/29648
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