interf_topol : topology file for Interface Elements

  • Brief description : defines the type, fault index, material index and the nodal connections for each interface element.
  • Additional information : the type of interface element to be used depends on the type of 3D element in the continuous mesh (see Interface Element section for details).
  • File type : formatted ASCII. In Fortran language, the formats for the header and a row of the bulk are '(i10,110a)' and '(12i10)', respectively.
  • Index of the file path in ATLAS.fnames : 16
  • Parameters to be set :
NAME TYPE DESCRIPTION UM
N_IE integer number of interface elements -
IE_IND[N_IE] integer interface element indeces -
IE_TYPE[N_IE] integer interface element types -
IE_FAULT[N_IE] integer interface element fault indeces -
IE_MAT[N_ELE] integer interface element material indeces -
IE_CON[8,N_ELE] integer interface element nodal connections (depending on IE_TYPE, the last indeces may be skypped by ATLAS) -
  • File structure :
N_IE
IE_IND[1] IE_TYPE[1] IE_FAULT[1] IE_MAT[1] IE_CON[8,1]
IE_IND[2] IE_TYPE[2] IE_FAULT[2] IE_MAT[2] IE_CON[8,2]
...
  • Example [IE_TYPE = 1] : this example defines 6-noded triangular interface elements IEtri6 :
      1150                                                                                                              
         1         1         1         1     17557      1796      2636     17558      1796      2636         0         0
         2         1         1         1     17557      1817      1796     17558      1817      1796         0         0
         3         1         1         1     17559      1838      1817     17560      1838      1817         0         0
       ...
  • Example [IE_TYPE = 2] : this example defines 8-noded quadrilateral interface elements IEqua8 :
       576
         1         2         1         1      1775      1796      2657      2636      1775      1796      2658      2636
         2         2         1         1      2636      2657      3553      3532      2636      2658      3554      3532
         3         2         1         1      3532      3553      4449      4428      3532      3554      4450      4428
       ...