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The strength-dilatancy characteristics embraced in hypoplasticity

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Abstract

The strength-dilatancy characteristics of frictional materials embraced in the hypoplastic model proposed by Gudehus and Bauer are investigated and compared with the revised model suggested by Huang. In the latter the deviatoric stress in the model by Gudehus and Bauer is replaced by a transformed stress according to the stress transformation technique proposed by Matsuoka. The flow rule, the failure state surface equation and the strengthdilatancy relationship embraced in both models are derived analytically. The performance of the two hypoplastic models in reproducing the relationship between the peak strength and the corresponding dilation rate under triaxial compression, plane compression and plane shearing are then extensively investigated and compared with experimental results and with the predictions made by particular classical stress-dilatancy theories. Numerical investigations show that the performance in reproducing the strength-dilatancy relationship is quite satisfactory under triaxial compression stress state in both models and the predictions made by the transformed stress based model are closer to the results obtained from classical stress-dilatancy theories for plane compression and plane shearing problems.

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Authors and Affiliations

  1. Geotechnical Engineering Department, Nanjing Hydraulic Research Institute, Nanjing, 210024, China

    Zhongzhi Fu

  2. College of Water Conservancy and Hydropower Engineering, Hohai University, Nanjing, 210098, China

    Sihong Liu & Zijian Wang

Authors
  1. Zhongzhi Fu
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  2. Sihong Liu
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  3. Zijian Wang
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Correspondence to Zhongzhi Fu.

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Fu, Z., Liu, S. & Wang, Z. The strength-dilatancy characteristics embraced in hypoplasticity. Front. Struct. Civ. Eng. 7, 178–187 (2013). https://doi.org/10.1007/s11709-013-0191-0

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  • DOI: https://doi.org/10.1007/s11709-013-0191-0

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