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Acta Mechanica Solida Sinica

, Volume 27, Issue 1, pp 15–27 | Cite as

Analysis of Parameters in Granular Solid Hydrodynamics for Triaxial Compression Tests

  • Shixiong Song
  • Qicheng Sun
  • Feng Jin
  • Chuhan Zhang
Article
  • 2 Downloads

Abstract

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 quasi-static 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.

Key Words

granular solid hydrodynamics granular materials triaxial compressions non-equilibrium state 

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Copyright information

© The Chinese Society of Theoretical and Applied Mechanics and Technology 2014

Authors and Affiliations

  • Shixiong Song
    • 1
  • Qicheng Sun
    • 1
  • Feng Jin
    • 1
  • Chuhan Zhang
    • 1
  1. 1.State Key Laboratory of Hydroscience and EngineeringTsinghua UniversityBeijingChina

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