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Thermo-mechanical behavior of sand–clay mixtures—Part II: constitutive modeling
In the current study, we proposed a novel fractional-order thermo-mechanical constitutive model within the framework of critical state theory to depict the coupling effect of fine content and temperature on shear behaviors of sand–clay mixtures. The direction of the non-orthogonal plastic strain increment was derived by taking the fractional derivative of the yield surface without introducing an additional plastic potential function, which provided a unified description of the associated and non-associated flow rule. In addition, the fines- and temperature-dependent critical state was also considered. Subsequently, the performance of the fractional-order thermo-mechanical model was analyzed through parametric investigation. Comparisons between the predicted and experimental results demonstrate that the proposed model can effectively reproduce the strain-softening, dilatancy, and thermal softening behaviors of sand–clay mixtures with different confining pressures, fine contents, and temperatures.
Thermo-mechanical behavior of sand–clay mixtures—Part II: constitutive modeling
In the current study, we proposed a novel fractional-order thermo-mechanical constitutive model within the framework of critical state theory to depict the coupling effect of fine content and temperature on shear behaviors of sand–clay mixtures. The direction of the non-orthogonal plastic strain increment was derived by taking the fractional derivative of the yield surface without introducing an additional plastic potential function, which provided a unified description of the associated and non-associated flow rule. In addition, the fines- and temperature-dependent critical state was also considered. Subsequently, the performance of the fractional-order thermo-mechanical model was analyzed through parametric investigation. Comparisons between the predicted and experimental results demonstrate that the proposed model can effectively reproduce the strain-softening, dilatancy, and thermal softening behaviors of sand–clay mixtures with different confining pressures, fine contents, and temperatures.
Thermo-mechanical behavior of sand–clay mixtures—Part II: constitutive modeling
Acta Geotech.
Xiao, Yang (Autor:in) / Sun, Zengchun (Autor:in) / Wang, Ninghao (Autor:in) / Guo, Haotian (Autor:in) / Wu, Huanran (Autor:in) / Meng, Minqiang (Autor:in)
Acta Geotechnica ; 19 ; 3389-3399
01.06.2024
11 pages
Aufsatz (Zeitschrift)
Elektronische Ressource
Englisch
Critical state , Fractional order , Sand–clay mixtures , State parameter , Thermal effects Engineering , Geoengineering, Foundations, Hydraulics , Solid Mechanics , Geotechnical Engineering & Applied Earth Sciences , Soil Science & Conservation , Soft and Granular Matter, Complex Fluids and Microfluidics
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