State-dependent fractional plasticity model for the true triaxial behaviour of granular soil

• Autorzy: Sun Y. , Sumelka W.

Identyfikatory

DOI

10.24423/aom.3084

• Języki publikacji: EN

Abstrakty

EN

The fractional plasticity was proposed to model the stress-strain behaviour of granular soils, but only within the scope of classical triaxial loading condition. In this study an attempt is made to develop a 3D fractional plasticity model for granular soils subjected to true triaxial loads by using characteristic stress, where all the fractional-order and integer-order derivatives can be easily obtained. Without using a plastic potential, the non-associated plastic flow rule is achieved by performing fractional derivatives of the yielding function in the characteristic stress space. The obtained plastic flow direction is found to be influenced by the fractional order, characteristic stress parameter and intermediate stress ratio. To further validate the proposed model, a series of true triaxial test results of different granular soils are simulated, from which good agreement between the model predictions and the corresponding test results is found.

Słowa kluczowe

EN

fractional plasticity; characteristic stress; true triaxial test; granular soil

• Wydawca: Instytut Podstawowych Problemów Techniki PAN
• Czasopismo: Archives of Mechanics
• Rocznik: 2019
• Tom: Vol. 71, nr 1
• Strony: 23--47
• Opis fizyczny: Bibliogr. 55 poz., rys.

Twórcy

autor

Sun Y.

• Key Laboratory of Ministry of Education for Geomechanics and Embankment Engineering, Jiangsu Research Center for Geotechnical Engineering Technology, Hohai University, Nanjing 210098, China

autor

Sumelka W.

• Institute of Structural Engineering, Poznan University of Technology, Piotrowo 5, 60-965 Poznań, Poland

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Uwagi

PL

Opracowanie rekordu w ramach umowy 509/P-DUN/2018 ze środków MNiSW przeznaczonych na działalność upowszechniającą naukę (2019).