D modeling ============== Characteristics of modeling ----------------------------------- The modeling is 3D for the concrete ring and BARRE for the cable. For the first calculation (EVOLNOLI), the cable is of type PASSIF/ACTIF: PASSIF to the group of nodes' ANCR1 'and ACTIF to the group of nodes' ANCR2 '. For the other two calculations (EVOLNOL2 and EVOLNOL3), the cable is of type ACTIF/ACTIF. In all cases, the linear friction BPEL is taken to be equal to :math:`\mathrm{0,01}` and the curved friction to :math:`\mathrm{0,03}`. The calculation consists of a single step: the cable is prestressed with CALC_PRECONT and a tension of :math:`{10}^{6}N` without anchor recoil, except in case EVOLNOL3 where the anchor recoil is equal to :math:`5.{10}^{-4}m`. Characteristics of the mesh ---------------------------- The mesh contains 20 elements of type HEXA8 and 20 elements of type SEG2. Tested sizes and results ------------------------------ The results tested are of the non-regression type to serve as a reference in modeling E and concern: * The next move :math:`x` and :math:`y` to the N16 node at times 1 and 2; * The stress values in the M193 mesh at integration point 1, at times 1 and 2. (see values in ยง :ref:`7.3 `).