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Pré-Publication, Document De Travail Année : 2008

A new elastoviscoplastic model based on the Herschel-Bulkley viscoplastic model

Résumé

The aim of this paper is to introduce a new three-dimensional elastoviscoplastic model that combines both the Oldroyd viscoelastic model and the Herschel-Bulkley viscoplastic model with a power-law index n>0. The present model is derived to satisfy the second law of thermodynamics. Various fluids of practical interest, such as liquid foams, droplet emulsions or blood, present such elastoviscoplastic behavior: at low stress, the material behaves as a viscoelastic solid, whereas at stresses above a yield stress, the material behaves as a fluid. When n=1, a recently introduced elastoviscoplastic model proposed by the author is obtained. When 01, the material exhibits the less usual shear thickening behavior.
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Dates et versions

hal-00316158 , version 1 (02-09-2008)
hal-00316158 , version 2 (04-11-2008)
hal-00316158 , version 3 (02-12-2008)

Identifiants

  • HAL Id : hal-00316158 , version 2

Citer

Pierre Saramito. A new elastoviscoplastic model based on the Herschel-Bulkley viscoplastic model. 2008. ⟨hal-00316158v2⟩
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