Manual pages | Cast3M

$$$$ DYNAMIC  NOTICE  CHAT      11/09/12    21:15:57     7124           
                                             DATE     11/09/12
                                             
  Procedure DYNAMIC                        Voir aussi :
    -----------------   
    TAB1 = DYNAMIC TAB2 ;
                                        TAB2.'DEPL' .'VITE' .'CHAR'
                                            .'CHAR' .'RIGI' .'MASS'
                                            .'FREQ' .'INST' .'DEBU'
                                            .'SAUV' .'SORT' .'ECON'


    Description :
    ____________

    This procedure enables the user to carry out a step by step
 dynamic analysis.
    It uses the centered Newmark algorithm. The step of time is
 deduced from a cut frequency which is provided by the user.
 The results are computed at specific time steps defined by the user.
 The input and output arguments for this procedure are tables.


    Contents :
    _________

       TAB2 : TABLE type object containing :

       in index  'DEPL'   : initial displacement   (CHPOINT type)
       in index  'VITE'   : initial velocity       (CHPOINT type)
       in index  'CHAR'   : loading                (CHARGEME type)
       in index  'RIGI'   : stiffness              (RIGIDITE type)
       in index  'MASS'   : mass                   (RIGIDITE type)
       in index  'AMOR'   : damping                (RIGIDITE type)
                            (optional datum)
       in index  'FREQ'   : cut frequency          (FLOTTANT type)
       in index  'INST'   : output time steps      (LISTREEL type)
       in index  'DEBU'   : initial time           (FLOTTANT type)
                            (optional datum. 0 by default)
       in index  'SAUV'   : Logical VRAI (true) if the user 
                            wishes to save the results all along 
                            computation (optional datum)                        
       in index 'SORT'    : the mesh for which results must be saved
                            (by default all the structure)
                            
       in index 'ECON'    : Logical VRAI (true) if the user wishes 
                            to save memory when results are saved
                            (effective only if TAB2.'SAUV'=VRAI) In
                            this case it is not possible to post-treat*
                            results within the same run.    

    Output :
    
       TAB1 : TABLE type object containing as many tables as
              output time steps :

       in index   N1    : time step number

       The table TAB1 N1  contains :

        in index 'TEMP'   : time step              (FLOTTANT type)
        in index 'DEPL'   : displacement           (CHPOINT type)
        in index 'VITE'   : velocity               (CHPOINT type)
        
       The Table TAB2 has a new index 'RESULTATS' which contains TAB1

    IMPORTANT notes :
    ___________________

    The initial displacements must be fields whose component names
 are the same as those of the displacement fields.
  
    It is possible to create a CHARGEME type object by means of the
  CHAR operator.