.. _V2.04.131:

**v2.04.131** SDLV131 - Simulation of a strain gauge using the OBSERVATION command
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**Summary:**

This test validates the operation of calculating the average value of a deformation field on an entity given by the user. The deformation field that a strain gauge would have measured is thus estimated. This calculation is carried out via the macro-command OBSERVATION. The case treated is a beam under simple tension modelled by solid elements.

This test case also validates the observation of mixed fields: a single call to the OBSERVATION command to identify fields of different types (DEPL, VITE,...).


.. toctree::
    :hidden:

    self

.. toctree::
    :maxdepth: 2
    :numbered:

    Probl_me_de_r_f_rence
    Solution_de_r_f_rence
    Mod_lisation_A
    Mod_lisation_B
    Mod_lisation_C
    Mod_lisation_D
    Synth_se_des_r_sultats