In this paper, the nonlinear anisotropic hyperelastic model recently proposed by Houlsby et al. (2019) is critically analysed and validated against experimental data. The model, here mainly discussed in terms of its strain energy function, is initially compared to existing formulations for the cases of nonlinear isotropic, linear anisotropic and the complete nonlinear anisotropic formulation. It is observed that the proposed model, which employs very few material parameters, encompasses most, but not all, of the existing anisotropic hyperelastic ones and provides a satisfactory fitting to laboratory experimental data observed on both sands and clays.

A nonlinear anisotropic hyperelastic formulation for granular materials: comparison with existing models and validation / Amorosi, A.; Rollo, F.; Houlsby, G. T.. - In: ACTA GEOTECHNICA. - ISSN 1861-1125. - (2020). [10.1007/s11440-019-00827-5]

A nonlinear anisotropic hyperelastic formulation for granular materials: comparison with existing models and validation

Amorosi A.
;
Rollo F.;
2020

Abstract

In this paper, the nonlinear anisotropic hyperelastic model recently proposed by Houlsby et al. (2019) is critically analysed and validated against experimental data. The model, here mainly discussed in terms of its strain energy function, is initially compared to existing formulations for the cases of nonlinear isotropic, linear anisotropic and the complete nonlinear anisotropic formulation. It is observed that the proposed model, which employs very few material parameters, encompasses most, but not all, of the existing anisotropic hyperelastic ones and provides a satisfactory fitting to laboratory experimental data observed on both sands and clays.
2020
Anisotropy; Constitutive modelling; Hyperelasticity; Small strain shear stiffness
01 Pubblicazione su rivista::01a Articolo in rivista
A nonlinear anisotropic hyperelastic formulation for granular materials: comparison with existing models and validation / Amorosi, A.; Rollo, F.; Houlsby, G. T.. - In: ACTA GEOTECHNICA. - ISSN 1861-1125. - (2020). [10.1007/s11440-019-00827-5]
File allegati a questo prodotto
File Dimensione Formato  
Amorosi__ANonlinearAnisotropicHyperelas_2019.pdf

solo gestori archivio

Tipologia: Versione editoriale (versione pubblicata con il layout dell'editore)
Licenza: Tutti i diritti riservati (All rights reserved)
Dimensione 624.23 kB
Formato Adobe PDF
624.23 kB Adobe PDF   Contatta l'autore

I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.

Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11573/1327696
Citazioni
  • ???jsp.display-item.citation.pmc??? ND
  • Scopus 24
  • ???jsp.display-item.citation.isi??? 23
social impact