DATE     98/03/17

    Opérateur CHARGEMENT                       See also :FORC PLUS TOUR 
    --------------------                                 TIRE PROI FORM 

           CHAR1 = CHAR (MOT) | CHE1  | EVOL1 |  ... (|'LIBRE'|)      
                              | CHPO1 |               |'LIE ' |
                              | TABLE1  TABLE2| 

       ... ( | 'TRAN' VEC1 EVOL2                |  ) ; 
             | 'ROTA' POIN1 (POIN2 si 3D) EVOL2 |
             | 'TRAJ' CHPO2                     |
  

    Description :
    _____________

    The CHAR operator constructs a CHAR1 object of CHARGEMENT 
    type, of FORCE subtype which contains the space and time description
    of the loading. The CHARGEMENT object can be named ( optional data).
    The CHARGEMENT objet may be made independent of any modelised structure
    when the CHPO1 geometrical support has no common node with this
    structure and the 'LIBRE' keyword used.  It is for instance the case 
    of a machining tool. Furthermore the displacement of a CHARGEMENT
    OBJECT, it may be 'LIBRE' or 'LIE ', can be described when
    the CHPO1 geometrical support has no common node with the structure
    and one of the options  'TRAN', 'ROTA' ou 'TRAJ' is chosen.
    In the procedure PASAPAS, the loading is computed ; thus if its
    nature is 'LIBRE' it is projected as it is, else it is first 
    applied to the structure initial configuration and then
    shifted to the current configuration 


    Contents :
    __________

       MOT     : optional data
                 CHARACTER*4
                 Words for the procedure PASAPAS

                       - temperature                 T
                       - imposed displacements       DIMP
                       - imposed temperatures        TIMP
                       - others loadings in mecanics MECA
                       - follower normal pressure    PSUI
                       - flux (consolidation)        FLUX
                       - thermic flux                Q
                       - external temperatures       TE
                       - external variables          ?

       CHPO1   : space description of the loading
                 CHPOINT type or MCHAML type

       EVOL1   : time description of the loading (EVOLUTION type) :
                 function containing in abscissa the times
                 (in chronological order) and in ordinate 
                 the values F(TEMP) of the function F for each
                 value of the times TEMP.

 or

       TABLE1  : TABLE.I = FLOT1
                 I     : INTEGER    I = 0, 1, 2, ... ,N
                 FLOT1 : FLOTTANT (description of the time)

       TABLE2  : TABLE.I = CHPO1
                 I     : INTEGER (the same as before)
                 CHPO1 :  space description of the loading
                          CHPOINT type or MCHAML type

      'LIBRE','LIE ' : optional keymord setting the dependance of the 
                 CHARGEMENT to the modelised structure (default 'LIE ').

  optional displacement (the default CHARGEMENT is 'STATIQUE') :

       'TRAN'  : optional keyword, implying that the loading is in 
                 translation with respect to the structure, followed by
       
        VEC1   : direction of translation (type POINT)

        EVOL2  : time description of the translation (EVOLUTION type),
                 function containing in abscissa the times
                 (in chronological order) and in ordinate  the values
                F(TEMP) of the velocity for each value of the times TEMP.

 or

       'ROTA'  : optional keyword, implying that the loading is in 
                 rotation tion with respect to the structure, followed by
       
  POIN1 POIN2  : (type POINT) points defining the oriented axis of rotation

        EVOL2  : time description of the translation (EVOLUTION type),
                 function containing in abscissa the times
                 (in chronological order) and in ordinate the values F(TEMP)
                 of the angular velocity for each value of the times TEMP.

 or 

        'TRAJ' : optional keyword, implying that the loading displacement 
                 with respect to the structure is described by a trajectory,
                 followed by

        CHPO2  : (CHPOINT type), the field's support is
                 the set of points of the trajectory and its unique component, 
                 named 'TEMP' collects the dates in the chronology. The field
                 support must be built with respect to this chronology.