Volume 4 Issue 3
Oct.  2011
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Article Contents
Hai-min WU, Yi-ming SHU, Jun-gao ZHU. 2011: Implementation and verification of interface constitutive model in FLAC3D. Water Science and Engineering, 4(3): 305-316. doi: 10.3882/j.issn.1674-2370.2011.03.007
Citation: Hai-min WU, Yi-ming SHU, Jun-gao ZHU. 2011: Implementation and verification of interface constitutive model in FLAC3D. Water Science and Engineering, 4(3): 305-316. doi: 10.3882/j.issn.1674-2370.2011.03.007

Implementation and verification of interface constitutive model in FLAC3D

doi: 10.3882/j.issn.1674-2370.2011.03.007
Funds:  This work was supported by the National Natural Science Foundation of China (Grant No. 51079047).
More Information
  • Corresponding author: Hai-min WU
  • Received Date: 2011-01-08
  • Rev Recd Date: 2011-04-18
  • Due to the complexity of soil-structure interaction, simple constitutive models typically used for interface elements in general computer programs cannot satisfy the requirements of discontinuous deformation analysis of structures that contain different interfaces. In order to simulate the strain-softening characteristics of interfaces, a nonlinear strain-softening interface constitutive model was incorporated into fast Lagrange analysis of continua in three dimensions (FLAC3D) through a user-defined program in the FISH environment. A numerical simulation of a direct shear test for geosynthetic interfaces was conducted to verify that the interface model was implemented correctly. Results of the numerical tests show good agreement with the results obtained from theoretical calculations, indicating that the model incorporated into FLAC3D can simulate the nonlinear strain-softening behavior of interfaces involving geosynthetic materials. The results confirmed the validity and reliability of the improved interface model. The procedure and method of implementing an interface constitutive model into a commercial computer program also provide a reference for implementation of a new interface constitutive model in FLAC3D.


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