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$$$$ VSUR     NOTICE  BP208322  13/02/05    21:15:09     7692           
                                             DATE     13/02/05
                                             
  Operateur VSUR                           Voir aussi :
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    CHAM1 = VSUR MODL1 ('NORM')


    Description :
    ____________

    The VSUR operator enables the user to calculate:
  - the 'surface vectors' associated with the integration points of 
    the shell elements,
  - the 'tangent vectors' in the case of beam elements,
  - for the other types of elements the vector field is empty. 
  If the 'NORM' key-word is not specified, the norm of the vectors is 
  equal to the jacobians at the considered integration point, otherwise 
  the vector field is the normal vector field at the shell elements.


    Contents :
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      MODL1  : model object (MMODEL type)

      CHAM   : generated object (MCHAML type) with components VX, VY, (VZ) 
              or VR, VZ

      'NORM' : key-word : if it is specified the norm of the
            generated vectors is equal to 1, CHAM has then the
            'NORMALES' subtype. Otherwise CHAM has the 
            'VECTEURS SURFACE' subtype