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Influence of Inherent Anisotropy on the Soil Behavior in Simple Shear Tests Using DEM

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Proceedings of the 7th International Conference on Discrete Element Methods (DEM 2016)

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Abstract

The discrete element method was adopted in this paper to numerically investigate the macroscopic behaviors of granular material with initial anisotropic fabric in simple shear tests. The evolutions of the stress-strain relationship, the non-coaxiality referring to the difference of principle directions between the strain rate and the stress increment, and the fabric anisotropy were analyzed during the tests. The results indicated that inherent anisotropy affects the shear strength. The directions of principal strain rate and principal stress are non-coaxial at the start of the shear loading and they become coaxial gradually as the shear strain increases. Both the principle directions of particle orientation and contact normal change towards 45°, but the later is much faster than the other.

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Acknowledgments

This work was supported by the National Natural Science Foundation of China (Grant nos. 51238009 and 51308408), the Fundamental Research Funds for the Central Universities, and the Open Foundation of State Key Laboratory of Hydrology-Water Resources and Hydraulic Engineering (Grant no. 2014492311).

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Authors and Affiliations

  1. Department of Geotechnical Engineering, Tongji University, Shanghai, 200092, China

    Jiangu Qian, Weiyi Li & Xiaoqiang Gu

  2. Key Laboratory of Geotechnical and Underground Engineering of Ministry of Education, Tongji University, Shanghai, 200092, China

    Jiangu Qian, Weiyi Li & Xiaoqiang Gu

  3. State Key Laboratory of Hydrology-Water Resource and Hydraulic Engineering, Nanjing Hydraulic Research Institute, Nanjing, 210029, China

    Kai Xu

Authors
  1. Jiangu Qian
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  2. Weiyi Li
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  3. Xiaoqiang Gu
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  4. Kai Xu
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Corresponding author

Correspondence to Xiaoqiang Gu .

Editor information

Editors and Affiliations

  1. Dalian University of Technology, Department of Engineering Mechanics Dalian University of Technology, Dalian, Liaoning, China

    Xikui Li

  2. Swansea University, College of Engineering Swansea University, Swansea, United Kingdom

    Yuntian Feng

  3. Colorado School of Mines, Department of Mechanical Engineering Colorado School of Mines, Golden, Colorado, USA

    Graham Mustoe

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Qian, J., Li, W., Gu, X., Xu, K. (2017). Influence of Inherent Anisotropy on the Soil Behavior in Simple Shear Tests Using DEM. In: Li, X., Feng, Y., Mustoe, G. (eds) Proceedings of the 7th International Conference on Discrete Element Methods. DEM 2016. Springer Proceedings in Physics, vol 188. Springer, Singapore. https://doi.org/10.1007/978-981-10-1926-5_80

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  • DOI: https://doi.org/10.1007/978-981-10-1926-5_80

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  • Publisher Name: Springer, Singapore

  • Print ISBN: 978-981-10-1925-8

  • Online ISBN: 978-981-10-1926-5

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