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Energy-Based Analysis of Effect of Inter-particle Friction on the Shear Behavior of Granular Materials

  • Bei-Bing DaiEmail author
  • Jun Yang
  • Wei Zhang
  • Kai Xu
  • Ai-Guo Li
Conference paper

Abstract

This paper describes a numerical investigation on the effect of inter-particle friction on the shear behavior of granular materials, with an emphasis placed on an energy-based analysis. The numerical simulation results show that the peak friction angle \( \phi_{p} \) increases with the inter-particle friction angle \( \phi_{\mu } \), and that the constant-volume friction angle \( \phi_{cv} \) increases with \( \phi_{\mu } \) in the low friction region before reaching a plateau stage at the high friction region, with the division point of such two characteristic stages emerging between \( \mu_{s} \) = 0.3 and \( \mu_{s} = 0.5 \). The energy-based analyses indicate that inter-particle friction exerts a profound effect on the energy dissipation and storing of granular assemblies. The inter-particle friction behavior and damping mechanism are the two major means in the consumption of the external work input. Frictional dissipation increases at first with the inter-particle friction coefficient in the low friction region, and then decreases in the high friction region, with the damping consumption exhibiting a reverse variation manner. The mobilized shear strength depends primarily on the energy stored in the normal direction at the contacts, E pn , which demonstrates the same variation mode as the deviatoric stress and constant-volume friction angle, despite that the energy stored in the tangential direction at the contacts, E pt , as well as the mobilized friction coefficient \( \mu_{b} \), shows a monotonic increase with the inter-particle friction coefficient.

Keywords

Granular materials Inter-particle friction Shear behavior Friction angle Energy dissipation 

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Copyright information

© Springer Nature Singapore Pte Ltd. 2018

Authors and Affiliations

  • Bei-Bing Dai
    • 1
    Email author
  • Jun Yang
    • 2
  • Wei Zhang
    • 1
    • 3
  • Kai Xu
    • 4
  • Ai-Guo Li
    • 5
  1. 1.School of Civil EngineeringSun Yat-sen UniversityGuangzhouChina
  2. 2.Department of Civil EnigneeringThe University of Hong KongHong KongChina
  3. 3.College of Water Conservancy and Civil EngineeringSouth China Agricultural UniversityGuangzhouChina
  4. 4.Nanjing Hydraulic Research InstituteNanjingChina
  5. 5.Shenzhen Geotechnical Investigation and Surveying Institute Co., Ltd.ShenzhenChina

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