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A fracture-energy-based elasto-softening-plastic constitutive model for joints of geomaterials

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Abstract

On the basis of plasticity and fracture mechanics for quasi-brittle materials, this article presented a constitutive model for gradual softening behavior of joints of geomaterials. Corresponding numerical tests are carried out at the local level. Characteristics of the model proposed are 1) plastic softening and dilatancy behavior are directly related to the fracture process of joint, and much less material and model parameters are required compared with those proposed by references; 2) the process of decohesion coupled with frictional sliding at both micro-scale and macro-scale is described.

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Authors and Affiliations

  1. Department of Mechanics, Northeastern University, 110004, Shenyang, P R China

    Shen Xin-pu Professor, Doctor

  2. Department of Applied Sciences, Taiyuan Institute of Heavy Machine, 030024, Taiyuan, P R China

    Shen Guo-xiao

Authors
  1. Shen Xin-pu Professor, Doctor
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  2. Shen Guo-xiao
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Additional information

Communicated by YANG Gui-tong

Foundation item: the Natural Science Foundation of Liaoning Province (070091)

Biography: SHEN Xin-pu (1963−)

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Xin-pu, S., Guo-xiao, S. A fracture-energy-based elasto-softening-plastic constitutive model for joints of geomaterials. Appl Math Mech 23, 1097–1104 (2002). https://doi.org/10.1007/BF02437721

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  • DOI: https://doi.org/10.1007/BF02437721

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