Viscoplasticity based on an additive split of the conjugated forces
Ristinmaa, Matti LU
and Ottosen, Niels Saabye
LU
(1998)
In European Journal of Mechanics. A, Solids
17(2).
p.207-235
- Abstract
- A generalized form of viscoplasticity is proposed, within a thermodynamic concept. The theory developed is based on an expansion of the dissipation inequality, where additional quantities are introduced. These quantities are obtained by an additive split of the conjugated thermodynamic forces. Additional potential functions that depend on these quantities can be introduced, which enables one to achieve a generalized form of non-associative viscoplastic theory. Within this concept, the Duvaut-Lions formulation follows naturally as a special case and other important possibilities are also discussed. It is shown that the proposed concept can be generalized to the case where corners exist on the yield and potential functions. Finally, some... (More)
- A generalized form of viscoplasticity is proposed, within a thermodynamic concept. The theory developed is based on an expansion of the dissipation inequality, where additional quantities are introduced. These quantities are obtained by an additive split of the conjugated thermodynamic forces. Additional potential functions that depend on these quantities can be introduced, which enables one to achieve a generalized form of non-associative viscoplastic theory. Within this concept, the Duvaut-Lions formulation follows naturally as a special case and other important possibilities are also discussed. It is shown that the proposed concept can be generalized to the case where corners exist on the yield and potential functions. Finally, some specific models that all take the Tresca criterion as the yield surface are discussed and used to illustrate some of the findings. (Less)
Please use this url to cite or link to this publication:
https://lup.lub.lu.se/record/1370058
- author
- Ristinmaa, Matti
LU
and Ottosen, Niels Saabye
LU
- organization
- publishing date
- 1998
- type
- Contribution to journal
- publication status
- published
- subject
- in
- European Journal of Mechanics. A, Solids
- volume
- 17
- issue
- 2
- pages
- 207 - 235
- publisher
- Elsevier
- external identifiers
-
- scopus:0032010252
- ISSN
- 1873-7285
- DOI
- 10.1016/S0997-7538(98)80083-1
- language
- English
- LU publication?
- yes
- id
- 7a01f6b1-8a99-4fc6-a7f5-f30a7ad6af2b (old id 1370058)
- date added to LUP
- 2016-04-01 12:27:24
- date last changed
- 2022-03-05 23:49:28
@article{7a01f6b1-8a99-4fc6-a7f5-f30a7ad6af2b,
abstract = {{A generalized form of viscoplasticity is proposed, within a thermodynamic concept. The theory developed is based on an expansion of the dissipation inequality, where additional quantities are introduced. These quantities are obtained by an additive split of the conjugated thermodynamic forces. Additional potential functions that depend on these quantities can be introduced, which enables one to achieve a generalized form of non-associative viscoplastic theory. Within this concept, the Duvaut-Lions formulation follows naturally as a special case and other important possibilities are also discussed. It is shown that the proposed concept can be generalized to the case where corners exist on the yield and potential functions. Finally, some specific models that all take the Tresca criterion as the yield surface are discussed and used to illustrate some of the findings.}},
author = {{Ristinmaa, Matti and Ottosen, Niels Saabye}},
issn = {{1873-7285}},
language = {{eng}},
number = {{2}},
pages = {{207--235}},
publisher = {{Elsevier}},
series = {{European Journal of Mechanics. A, Solids}},
title = {{Viscoplasticity based on an additive split of the conjugated forces}},
url = {{http://dx.doi.org/10.1016/S0997-7538(98)80083-1}},
doi = {{10.1016/S0997-7538(98)80083-1}},
volume = {{17}},
year = {{1998}},
}