The coupling procedure is that, firstly, the three-dimension geometry model is built with ANSYS and the model meshes are divided.
The results confirmed the validity and reliability of the improved interface model. A coupling modeling method with ANSYS/FLAC3D is put forward aiming at the technical difficulties and deficiencies in pre-processing for complex geologic body and structural engineering with FLAC3D.
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. A numerical simulation of a direct shear test for geosynthetic interfaces was conducted to verify that the interface model was implemented correctly. 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 (FLAC 3D) through a user-defined program in the FISH environment. 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. Table 15: Group Command FLAC3D 5.0 FLAC3D 6.0 GROUP zone (et al.) grouping is a facility (keyword) within other commands see, for instance, zone group, structure node group, extrude edge group, etc.
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