example
=====

The following example applies to the calculation of global quantities on a dynamic model of a reactor building. The following are modelled: the outer chamber, the inner chamber, the internal structures, the tank well.

The modeling of a half-building is carried out by beam elements, discrete elements representing ground connections, additional masses and connections between nodes.

It is on this beam model that the operator POST_ELEM will calculate:


* the mass of the structure,


* the coordinates of the center of gravity,


* the inertia tensor,


* the potential energy of certain modes and its distribution in the structure,


* the kinetic energy of certain modes and its distribution in the structure.


Calculation of mass, center of gravity and inertia
--------------------------------------------------------


* for the whole structure (TOUT = 'OUI')


* for the group of elements containing the beams (GROUP_MA = 'pou_d_t')


* for the group of elements containing the ground links (GROUP_MA = 'liai_sol')


* for the group of elements containing the additional masses (GROUP_MA = 'masses')


* for the group of elements containing the links between nodes (GROUP_MA = 'liai_noe')

**Order**


.. code-block:: text

    massestr = POST_ELEM (MODELE = stickmod,
CHAM_MATER = to kill,
CARA_ELEM = caraelem,
MASS_INER = _F (GROUP_MA =( 'pou_d_t', 'liai_sol',
'masses', 'liai_noe'),
TOUT = 'OUI',),
TITRE ='mass, center of gravity and inertias of the structure');


Calculating the potential energy of modes 1, 2 and 7
----------------------------------------


* for the whole structure (TOUT = 'OUI')


* for the group of elements containing the beams (GROUP_MA = 'pou_d_t')


* for the group of elements containing the ground links (GROUP_MA = 'liai_sol')


* for the group of elements containing the additional masses (GROUP_MA = 'masses')


* for the group of elements containing the links between nodes (GROUP_MA = 'liai_noe')

**Order**

enerpot = POST_ELEM (RESULTAT = fashion,

                         MODELE = stickmod,

                         NUME_MODE = (1,2.7,),

 CHAM_MATER = to kill,

                         CARA_ELEM = caraelem,

                         ENER_POT = _F (TOUT = 'OUI',

                                     GROUP_MA = ('pou_d_t', 'liai_sol',

                                                             'masses', 'liai_noe'),

                 ),

                         TITRE = 'potential energies of modes 1, 2 and 7',

                     )


Calculating the kinetic energy of modes 1, 2, and 7
-------------------------------------------------


* for the whole structure (TOUT = 'OUI')


* for the group of elements containing the beams (GROUP_MA = 'POU_D_T')


* for the group of elements containing the ground links (GROUP_MA = 'LIAI_SOL')


* for the group of elements containing the additional masses (GROUP_MA = 'MASSES')


* for the group of elements containing the links between nodes (GROUP_MA = 'LIAI_NOE')

**Order**

enercin = POST_ELEM (RESULTAT = fashion,

                         MODELE = stickmod,

                         NUME_MODE = (1,2.7,),

                         CHAM_MATER = to kill,

                         CARA_ELEM = caraelem,

                         ENER_CIN = _F (TOUT = 'OUI',

                                             GROUP_MA =( 'pou_d_t', 'liai_sol',

                                                         'masses', 'liai_noe',),

             ),

                         TITRE = 'kinetic energies of modes 1, 2 and 7',

     )