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$$$$ ECOU     NOTICE  CHAT      11/09/12    21:15:59     7124           
                                             DATE     11/09/12

  Operateur ECOULE                         Voir aussi :
    ----------------   
    SIG1 VAR1 DEPS1 = ECOU MODL1 SIG2 VAR2 EPS3 CAR1  ( TAB1 ) ...

                      ...   (FLOT1)  ('NOID')  (ISTEP) ;


    Description :
    ____________

    Given, on the one hand, an initial state which is both
 materially and statically acceptable and features a stress 
 field, a field of internal variables, material and geometrical
 characteristics, and on the other, a strain increment, the
 ECOULE operator calculates the final, materially acceptable
 state, featuring a new stress field, new internal variables,
 and an inelastic strain increment.
 

    Contents :
    __________


    MODL1 : model object (MMODEL type)

    SIG2  : initial stress field
            (MCHAML type, CONTRAINTES subtype)

    VAR2  : field of initial and internal variables
            (MCHAML type, VARIABLES INTERNES subtype)

    EPS3  : strain increment
            (MCHAML type, DEFORMATIONS subtype)

    CAR1  : description of the material and geometrical 
            characteristics (MCHAML type, CARACTERISTIQUES
            subtype)

    TAB1  : TABLE containing additional information required for
            viscoplastic materials with or without damage

            -  in index 'DEFI', field of inelastic strains at the 
               beginning of the step (MCHAML type, DEFORMATIONS
               subtype)

            -  in index 'TEMPS0', time at the beginning of the
               step (FLOTTANT type)

            -  in index 'DT', time step (FLOTTANT type)

            -  in index 'MAXISOUSPAS', maximum number of substeps
               used for the integration of equations (ENTIER type)
               (200 by default)

    FLOT1 : numerical specification used for the calculation
            (FLOTTANT type)
            by default FLOT1 equals 1.E-3

    ISTEP : action flag for non-local calculation (ENTIER type),
            equalling 1 for the calculation of threshold function
            only, and 2 for the calculation of dissipative variables
            (0 by default)
           
    SIG1  : new stress field 
            (MCHAML type, CONTRAINTES subtype)

    VAR1  : new internal variables
            (MCHAML type, VARIABLES INTERNES subtype)

    DEPS1 : inelastic strain increment
            (MCHAML type, DEFORMATIONS subtype)


    Notes :
    ________

     It is advised to maintain the input and output data order.

    Reading the word 'NOID' enables the suppression of error
 messages in the event of a non-convergence, as well as the 
 production of a result.
    In this case, if the table TAB1 has been provided, it contains
 on output, in index 'SUCCES', a logical with a VRAI (true) value if
 the calculation converged all right, and FAUX (false) if not.