The influence of non-dissipative quantities in kinematic hardening plasticity
Författare
Summary, in English
A kinematic hardening plasticity model valid for finite strains is presented. The model is based on the well-known multiplicative split of the deformation gradient into elastic and plastic parts. The basic ingredient in the formulation is the introduction of a locally defined configuration-a centre configuration-which is associated with a deformation gradient that is used to characterize the kinematic hardening behaviour. The non-dissipative quantities allowed in the model are found when the plastic and kinematic hardening evolution laws are split into two parts: a dissipative part, which is restricted by the dissipation inequality, and a non-dissipative part, which can be chosen without any thermodynamic considerations. To investigate the predictive capabilities of the proposed kinematic hardening formulation, necking of a bar is considered. Moreover, to show the influence of the non-dissipative quantities, the simple shear problem and torsion of a thin-walled cylinder are considered. The numerical examples reveal that the non-dissipative quantities can affect the response to a large extent and are consequently valuable and important ingredients in the formulation when representing real material behaviour.
Avdelning/ar
Publiceringsår
2004
Språk
Engelska
Sidor
615-622
Publikation/Tidskrift/Serie
Proceedings of the Institution of Mechanical Engineers. Part C: Journal of Mechanical Engineering Science
Volym
218
Issue
6
Dokumenttyp
Artikel i tidskrift
Förlag
Professional Engineering Publishing
Ämne
- Mechanical Engineering
Nyckelord
- kinematic hardening
- large strains
- multiplicative split
Status
Published
ISBN/ISSN/Övrigt
- ISSN: 0954-4062