A Comparative Analysis of Two Approaches to Nonlocal Ductile Damage Modeling Full article
| Journal |
Journal of Engineering Physics and Thermophysics
ISSN: 1062-0125 |
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| Output data | Year: 2022, Volume: 95, Pages: 1634–1646 Pages count : DOI: 10.1007/s10891-022-02632-6 | ||||
| Tags | nonlocal damage mechanics, large deformations, Gurson–Tvergaard–Needleman model, fi nite element method | ||||
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Abstract:
A new nonlocal version of Gurson–Tvergaard–Needleman model is presented, which includes a new scheme of
delocalization of constitutive relations. The delocalization scheme has the eff ect of trapping the damage, which
makes it possible to increase the accuracy of modeling the processes of destruction and to avoid excessive
diff usion of material damage. As an alternative approach, a nonlocal thermodynamically consistent model
of damage accumulation developed earlier is considered. For both models, effi cient schemes of integrating
constitutive relations are presented. Using the problem of the destruction of a strip with a hole as an example, the
results obtained by both models are compared. Despite the fact that the models under consideration are based
on fundamentally diff erent hypotheses, the predicted integral characteristics and distributions of plastic strains
coincide with high accuracy. The coincidence of the predictions by two diff erent models greatly complicates the
choice of model hypotheses based on integral characteristics. It is established, however, that for the two models
there is a signifi cant discrepancy in the predictions of the local evolution of the porosity of the material. Thus, in
the presence of reliable experimental data on local material damage, this eff ect can be used as the basis for new
protocols for selecting and calibrating models
Cite:
Klyuchantsev V.S.
, Shutov A.V.
A Comparative Analysis of Two Approaches to Nonlocal Ductile Damage Modeling
Journal of Engineering Physics and Thermophysics. 2022. V.95. P.1634–1646. DOI: 10.1007/s10891-022-02632-6 WOS Scopus РИНЦ OpenAlex
A Comparative Analysis of Two Approaches to Nonlocal Ductile Damage Modeling
Journal of Engineering Physics and Thermophysics. 2022. V.95. P.1634–1646. DOI: 10.1007/s10891-022-02632-6 WOS Scopus РИНЦ OpenAlex
Original:
Ключанцев В.С.
, Шутов А.В.
СРАВНИТЕЛЬНЫЙ АНАЛИЗ ДВУХ ПОДХОДОВ К НЕЛОКАЛЬНОМУ МОДЕЛИРОВАНИЮ НАКОПЛЕНИЯ ПОВРЕЖДЕНИЙ
Инженерно-физический журнал. 2022. Т.95. №7. С.1680-1692. РИНЦ
СРАВНИТЕЛЬНЫЙ АНАЛИЗ ДВУХ ПОДХОДОВ К НЕЛОКАЛЬНОМУ МОДЕЛИРОВАНИЮ НАКОПЛЕНИЯ ПОВРЕЖДЕНИЙ
Инженерно-физический журнал. 2022. Т.95. №7. С.1680-1692. РИНЦ
Identifiers:
| Web of science: | WOS:000893487900004 |
| Scopus: | 2-s2.0-85143224296 |
| Elibrary: | 51927818 |
| OpenAlex: | W4311909011 |