PROJECT CZ 18/2020 "HYSTERESIS IN HYPO-PLASTIC MODELS"

OeAD (Österreichische Austauschdienst) Scientific & Technological Cooperation (Wissenschaftlich-Technische Zusammenarbeit (WTZ)
financed by the Austrian Federal Ministry of Science, Research and Economy (BMWFW)
and by the Czech Ministry of Education, Youth and Sports (MŠMT)

ABSTRACT:

The proposed joint project aims at theoretical and numerical investigation of non-linear systems for hypo-plastic models describing frictional granular materials like cohesionless soils and broken rock fills. Based on the concept of hypo-plasticity of the Kolymbas type different constitutive models with various properties are proposed in the literature. The focus of the research is on a dynamic behaviour of the systems of governed equations with respect to hysteresis under various cycling loading conditions and stability in the sense of Lyapunov. Developing of suitable numerical techniques will support the theoretical research planned in the project. The results can also be helpful for engineers for selection of appropriate models for practical application.


DURATION: 1.01.2020 - 31.12.2022

PARTICIPANTS:

from AUSTRIA:

PI: Victor A. Kovtunenko
Erich Bauer
Ján Eliaš
Anna V. Zubkova (Buchynskaja)

from CZECH REPUBLIC:

PI: Giselle Antunes Monteiro
Pavel Krejčí
Judita Runcziková
Lenka Siváková

VISITS:

14-18.04.2020: Prague (E. Bauer, J. Eliaš, V.A. Kovtunenko) - Coronavirus-lockdown
20-24.04.2020: Graz (P. Krejčí, J. Runcziková) - Coronavirus-lockdown

PUBLICATIONS:

[1] V.A. Kovtunenko, P. Krejci, N. Krenn, E. Bauer, L. Sivakova and A.V. Zubkova, On feasibility of rate-independent stress paths under proportional deformations within hypoplastic constitutive model for granular materials, Mathematical Models in Engineering 5 (2019), 4, 119-126 [pdf]

[2] E. Bauer, V.A. Kovtunenko, P. Krejci, N. Krenn, L. Sivakova and A.V. Zubkova, On proportional deformation paths in hypoplasticity, Acta Mechanica 231 (2020), 4, 1603-1619 [pdf]


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