Features and verification =============================== The indicators presented here can be used in post-processing a mechanical calculation and are available for the finite elements of continuous media in 2D (plane deformation mode, plane or axisymmetric stresses, triangular or quadrangular cells) or 3D (hexahedral, tetrahedral, pentahedral or pyramid meshes) or 3D (hexahedral, tetrahedral, pentahedral or pyramid meshes). Wire elements, beams, plates, and shells are excluded from this application. Local indicators ------------------ These indicators are accessible after a static or dynamic calculation regardless of the law of behavior of the material. Operator CALC_CHAMP presents the options' DERA_ELGA 'and' DERA_ELNO 'for the discharge indicator :math:`{I}_{1}` and the radiality loss indicator :math:`{I}_{2}` evaluated at the nodes or Gauss points of the element :ref:`[2] `. In the general case, the first two standards described in paragraph :ref:`2.1 ` are calculated, the last two being used only if an elastoplastic calculation with kinematic work hardening has been carried out beforehand. The components of the field calculated in this way are: * DCHA_T: the discharge indicator :math:`{I}_{1}` calculated from the stress tensor; * DCHA_V: the discharge indicator :math:`{I}_{1}` calculated from the stress deviator; * IND_DCHA: the discharge indicator :math:`{I}_{\mathrm{decha}}` * IND_DCHA =0 initial value without constraint * IND_DCHA =1 if elastic load * IND_DCHA =2 if plastic load * IND_DCHA =-1 if lawful elastic discharge (regardless of the type of work hardening) * IND_DCHA =-2 if abusive discharge (we would have laminated with kinematic work hardening). * VAL_DCHA: the indicator of the proportion of output from the criterion * RADI_V: the :math:`{I}_{2}` radiality loss indicator calculated from the stress deviator. * ERR_RADI: the error indicator :math:`{I}_{\eta }` due to time discretization These indicators are verified by the following test cases: .. csv-table:: "SSNP111 ", "Passage from Gauss points to nodes on quadratic elements", "[:external:ref:`V6.03.111 `]" "SSNP14 ", "Traction-Shear Plate - Von Mises (Kinematic Work Hardening)", "[:external:ref:`V6.03.014 `]" "SSNP15 ", "Traction-shear plate - Von Mises (isotropic work hardening)", "[:external:ref:`V6.03.015 `]" Global indicators ------------------- These indicators are only accessible after an elastoplastic calculation with isotropic work hardening. The operator POST_ELEM presents the options' INDIC_SEUIL 'and' INDIC_ENER 'corresponding to the global indicators :math:`{I}_{3}` and :math:`{I}_{4}` respectively. These are evaluated on a mesh group previously defined by the user (for example by the DEFI_GROUP command). These indicators are verified by the following test cases: .. csv-table:: "HSNV100i ", "Thermoplasticity in simple traction", "[:external:ref:`V7.22.100 `]" "SSNP15 ", "Traction-shear plate - Von Mises (isotropic work hardening)", "[:external:ref:`V6.03.015 `]"