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$$$$ FSUR     NOTICE  FANDEUR   12/07/18    21:15:45     7434           
                                             DATE     12/07/18
                                             
  Operateur FSUR                           Voir aussi :
    --------------   
  CHPO1 = FSUR | 'MASS' MODL1  |  VEC1  GEO1  |  (CAR1) ;
               |               |  CHPO2       |
               |
               | 'COQU' MODL1  |  VEC1   |  (CAR1) ;
               |               |  CHPO2  |
               |
               | 'POUT' MODL1  |  VEC1   |  ('PROJ' VEC2) ;
                               |  CHPO2  |

    Description:
    ____________

    The FSUR operator calculates the nodal forces which are equivalent
 to a surface force density applied on an object.


    Contents:
    _________

      MASS | : keyword referring to the type of element on which 
      COQU |   the force is applied (solid, shell, beam)
      POUT |

      MODL1  : object on which the force is applied (MMODEL type)

      VEC1   : vector representing the uniform surface force density 
               (POINT type)

      GEO1   : for the solid elements only, mesh on which the force 
               is applied (MAILLAGE type)

      CHPO2  : field containing the nodal values of the surface force 
               density. In the case of beam elements it can also 
               include moment components (CHPOINT type).

      CAR1   : characteristics of shells and solids:
               (MCHAML type, CARACTERISTIQUES subtype)
               - for the thick shells, contains the values of the
                 thicknesses at the points of integration
               - for the solids in planes stresses, contains the 
                 values of the thicknesses at the points of integration

      PROJ   : optional keyword followed by :

      VEC2   : indicating that the loading density is defined per unit
               length of the element projection on a plane normal to 
               to the vector VEC2 (POINT type)

      CHPO1  : equivalent nodal forces (CHPOINT type)


    Note:  1. In the case of excentrated shell elements the excentricity 
    _____     is not taken into account.