2014_EJRNL_PP_Shixiong_Song_1.pdf
Terbatas Irwan Sofiyan
» ITB
Terbatas Irwan Sofiyan
» ITB
Granular materials are omnipresent in industries and in nature. For small strains,
elastic-plastic and hypoplastic constitutive relations are widely used in engineering practice, but
they are not a significant reflection of the underlying physics. Under a unified thermodynamics
framework explaining the physics of materials, granular solid hydrodynamics (GSH) was an extension
towards describing granular materials, not only solid-like, but also fluid-like behaviors.
In this paper, the fundamentals of GSH are briefly treated and then simplified to analyze quasistatic
deformations in triaxial compressions. The calculated stress-strain relations and volumetric
strain are compared with experimental results. The influences of the major parameters in GSH,
especially their cross coupling influences, are analyzed and their physical meanings are further
clarified. After parameters were calibrated, the calculated stress values in the characteristic stress
state are found to be within 22% of tested values.Meanwhile, the energy dissipation during triaxial
compression is analyzed. The above results support and partially quantify GSH.