Modelling of cyclic creep in the finite strain range using a nested split of the deformation gradient Full article
| Journal |
ZAMM Zeitschrift fur Angewandte Mathematik und Mechanik
ISSN: 0044-2267 |
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| Output data | Year: 2017, Volume: 97, Number: 9, Pages: 1083-1099 Pages count : 17 DOI: 10.1002/zamm.201600286 | ||||||
| Tags | Cyclic creep, finite strain, nested multiplicative split, creep anisotropy, Kachanov-Rabotnov damage. | ||||||
| Authors |
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Abstract:
A new phenomenological model of cyclic creep, which is suitable for applications involving finite creep deformations
of the material, is proposed. The model accounts for the effect of the transient increase of the creep strain rate upon the
load reversal. In order to extend the applicability range of the model, the creep process is fully coupled to the classical
Kachanov-Rabotnov damage evolution. As a result, the proposed model describes all the three stages of creep. Large strain
kinematics is described in a geometrically exact manner using the assumption of a nested multiplicative split, originally
proposed by Lion for finite strain plasticity. The model is thermodynamically admissible, objective, and w-invariant. The
implicit time integration of the proposed evolution equations is discussed. The corresponding numerical algorithm is
implemented into the commercial FEM code MSC.Marc. The model is validated using this code; the validation is based
on real experimental data on cyclic torsion of a thick-walled tubular specimen made of the D16T aluminium alloy. The
numerically computed stress distribution exhibits a “skeletal point” within the specimen, which simplifies the analysis of
test data.
Cite:
Shutov A.V.
, Larichkin A.Y.
, Shutov V.A.
Modelling of cyclic creep in the finite strain range using a nested split of the deformation gradient
ZAMM Zeitschrift fur Angewandte Mathematik und Mechanik. 2017. Т.97. №9. С.1083-1099. DOI: 10.1002/zamm.201600286 WOS Scopus РИНЦ OpenAlex
Modelling of cyclic creep in the finite strain range using a nested split of the deformation gradient
ZAMM Zeitschrift fur Angewandte Mathematik und Mechanik. 2017. Т.97. №9. С.1083-1099. DOI: 10.1002/zamm.201600286 WOS Scopus РИНЦ OpenAlex
Identifiers:
| Web of science: | WOS:000407481300008 |
| Scopus: | 2-s2.0-85017513509 |
| Elibrary: | 31028612 |
| OpenAlex: | W2606579775 |