• français
    • English
    français
  • Login
Help
View Item 
  •   Home
  • Laboratoire d'Etude des Microstructures et de Mécanique des Matériaux (LEM3)
  • View Item
  • Home
  • Laboratoire d'Etude des Microstructures et de Mécanique des Matériaux (LEM3)
  • View Item
JavaScript is disabled for your browser. Some features of this site may not work without it.

An alternative way to describe thermodynamically-consistent higher-order dissipation within strain gradient plasticity

Article dans une revue avec comité de lecture
Author
JEBAHI, Mohamed
178323 Laboratoire d'Etude des Microstructures et de Mécanique des Matériaux [LEM3]
FOREST, Samuel
301492 Mines Paris - PSL (École nationale supérieure des mines de Paris)
93537 École des Mines de Paris

URI
http://hdl.handle.net/10985/22795
DOI
10.1016/j.jmps.2022.105103
Date
2022-10
Journal
Journal of the Mechanics and Physics of Solids

Abstract

In the context of strain gradient plasticity (SGP), description of higher-order dissipation is the subject of extensive on-going discussions. In most existing SGP theories including thermodynamically-consistent higher-order dissipation, higher-order dissipative processes are described based on the decomposition of the higher-order stresses into recoverable and unrecoverable parts. This higher-order stress decomposition represents the basis of the so-called non-incremental (Gurtin-type) SGP theories, which are the most commonly used in the literature. As formulated, these theories satisfy the thermodynamic requirement of non-negative dissipation. However, they generally lead to unusual effects for some boundary value problems, such as the occurrence of elastic gaps under non-proportional loading conditions. The present work proposes an alternative way to describe higher-order dissipative effects, with an illustration within strain gradient crystal plasticity (SGCP) framework. Inspired by rheological models in series like Maxwell model, the higher-order stress decomposition is replaced by a decomposition of the plastic slip gradients into recoverable and unrecoverable parts. Effects of this decomposition technique are studied and compared with those obtained using higher-order stress decomposition. Capabilities of such a technique to deal with elastic gaps are also investigated.

Files in this item

Name:
LEM3_JMPS_2022_JEBAHI.pdf
Size:
325.9Kb
Format:
PDF
Embargoed until:
2023-04-01
View/Open

Collections

  • Laboratoire d'Etude des Microstructures et de Mécanique des Matériaux (LEM3)

Related items

Showing items related by title, author, creator and subject.

  • Scalar-based strain gradient plasticity theory to model size-dependent kinematic hardening effects 
    Article dans une revue avec comité de lecture
    JEBAHI, Mohamed; FOREST, Samuel (Springer Verlag, 2021)
    A common belief in phenomenological strain gradient plasticity modeling is that including the gradient of scalar variables in the constitutive setting leads to size-dependent isotropic hardening, whereas the gradient of ...
  • Towards gigantic RVE sizes for 3D stochastic fibrous networks 
    Article dans une revue avec comité de lecture
    DIRRENBERGER, Justin; FOREST, Samuel; JEULIN, Dominique (Elsevier, 2014)
    The size of representative volume element (RVE) for 3D stochastic fibrous media is investigated. A statistical RVE size determination method is applied to a specific model of random microstructure: Poisson fibers. The ...
  • Isogeometric shape optimization of smoothed petal auxetic structures via computational periodic homogenization 
    Article dans une revue avec comité de lecture
    WANG, Zhen-Pei; POH, Leong Hien; DIRRENBERGER, Justin; ZHU, Yilin; FOREST, Samuel (Elsevier, 2017)
    An important feature that drives the auxetic behaviour of the star-shaped auxetic structures is the hinge-functional connection at the vertex connections. This feature poses a great challenge for manufacturing and may lead ...
  • Computational Homogenization of Architectured Materials 
    Chapitre d'ouvrage scientifique
    DIRRENBERGER, Justin; FOREST, Samuel; JEULIN, Dominique (Springer New York, 2019)
    Architectured materials involve geometrically engineered distributions of microstructural phases at a scale comparable to the scale of the component, thus calling for new models in order to determine the effective properties ...
  • Multiscale modeling of the elasto-plastic behavior of architectured and nanostructured Cu-Nb composite wires and comparison with neutron diffraction experiments 
    Article dans une revue avec comité de lecture
    GU, T.; MEDY, J. R.; KLOSEK, Vincent; CASTELNAU, Olivier; FOREST, Samuel; HERVÉ-LUANCO, Eveline; LECOUTURIER-DUPOUY, F.; PROUDHON, Henry; RENAULT, Pierre Olivier; THILLY, Ludovic; VILLECHAISE, Patrick (Elsevier, 2019)
    Nanostructured and architectured copper niobium composite wires are excellent candidates for the generation of intense pulsed magnetic fields ( 100T) as they combine both high strength and high electrical conductivity. ...

Browse

All SAMCommunities & CollectionsAuthorsIssue DateCenter / InstitutionThis CollectionAuthorsIssue DateCenter / Institution

Newsletter

Latest newsletterPrevious newsletters

Statistics

Most Popular ItemsStatistics by CountryMost Popular Authors

ÉCOLE NATIONALE SUPERIEURE D'ARTS ET METIERS

  • Contact
  • Mentions légales

ÉCOLE NATIONALE SUPERIEURE D'ARTS ET METIERS

  • Contact
  • Mentions légales