Applied Mathematics and Mechanics (English Edition) ›› 2002, Vol. 23 ›› Issue (9): 1097-1104.

• Articles • Previous Articles     Next Articles

A FRACTURE-ENERGY-BASED ELASTO-SOFTENING-PLASTIC CONSTITUTIVE MODEL FOR JOINTS OF GEOMATERIALS

SHEN Xin-pu1, SHEN Guo-xiao2   

  1. 1. Department of Mechanics, Northeastern University, Shenyang 110004, PR China;
    2. Department of Applied Sciences, Taiyuan Institute of Heavy Machine, Taiyuan 030024, P.R.China
  • Received:2001-08-13 Revised:2002-06-18 Online:2002-09-18 Published:2002-09-18
  • Supported by:

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

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 geomateri-als. 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 friction-al sliding at both micro-scale and macro-scale is described.

2010 MSC Number: 

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