Manual pages | Cast3M

$$$$ SUPE     NOTICE  CHAT      11/09/12    21:18:13     7124           
                                             DATE     11/09/12
                                             
  Operateur SUPER                          Voir aussi :
    ---------------   
    RESU1 = SUPER  | 'RIGIDITE'  ('NOMU') RIG1  |  GEO1  |
                   |                            |  RIG2  |
                   |                            |  CHPO1 |
                   |
                   | 'CHARGE'    SUPER1   FORC1
                   | 'DEPLA'     SUPER1   DEP1  (FORC1)

    (LCHP1) RESU1 = SUPER 'MASSE' SUPER1  MAS1 ('LCHP')
 

    Description :
    ____________
 
    The SUPER operator is compulsory for all the operations
 connected with a super-element.
 
    Contents :
    __________
 
  There are several possible operations depending on the key
  word:
 
    --------------
    | 1st Option |
    --------------
 
     'RIGIDITE' : key word indicating that the equivalent
                  matrix of a super-element is defined and
                  calculated. To allow loading of relations,
                  the associated Lagrangian multipliers are added 
                  to the master points.
 
     NOMU       : optionnal keyword asking not to add the
                  Lagrangian multipliers to the master points.
 
     RIG1       : stiffness matrix to be reduced
                  (RIGIDITE type)
 
     GEO1   |   : are used for defining the set of master points
     RIG2   |     associated with the unknowns defining the super-
     CHPO1  |     element. (MAILLAGE, RIGIDITE or CHPOINT type)
 
                  With GEO1 (MAILLAGE type) we take, for each node,
                  the unknowns within RIG1.
 
     RESU1      : generated object (SUPERELE type)
 
 
    --------------
    | 2nd Option |
    --------------
 
     'CHARGE'   : key word indicating that the loading on the master
                  points of the super element is reduced.
 
     SUPER1     : super-element on which the loads are reduced
                  (SUPERELE type)
 
     FORC1      : loads to be reduced (CHPOINT type)
 
     RESU1      : generated object (CHPOINT type)
 
    --------------
    | 3rd Option |
    --------------
 
     'DEPLA'    : key word indicating that the calculation of the
                  displacement field is prepared within the
                  super-element
 
     SUPER1     : super-element within which the displacement
                  field is calculated (SUPERELE type)
 
     DEP1       : displacement field of master nodes
                  (CHPOINT type)

     FORC1      : loads acting on the structure (CHPOINT type)

 
     RESU1      :  displacements whithin the structure

 
    --------------
    | 4th Option |
    --------------
 
    'MASSE'     : key word indicating that the equivalent mass
                  matrix is calculated
 
    SUPER1      : super-element enabling the mass reduction
                  (SUPERELE type)
 
    MASS1       : mass matrix to be reduced (RIGIDITE type)

    `LCHP'      : optional key word indicating that the lines of
                  the transformation matrix are needed

    RESU1       : reduced mass matrix (RIGIDITE type)

    LCHP1       : object of type LISTCHPO containing the lines of 
                 the transformation matrix
 
    RESU1       : reduced mass matrix (RIGIDITE type)
 
 
    Example :
    _________
 
    STRU1 is composed of RIG1 and RIG2; their geometrical supports
 GEO1 and GEO2 have a common line LIG1.
    Given FORC1 and FORC2, the loads on both parts, the following
 calculation can then be performed :
 
        * calculation of the equivalent stiffness of RIG2
                  SUPER1 = SUPER 'RIGIDITE' RIG2 LIG1 ;
        * stiffness retreival and connection with the rest of
          the structure
                 RIG3  = EXTRAI SUPER1 'RIGI';
                 RIG4  = RIG1 ET RIG3;
        * loads reduction
                 FORC3 = SUPER 'CHARGE' SUPER1 FORC2;
        * whole structure solution
                 DET1  = RESOU RIG4 ( FORC1 ET FORC3);
        * calculation of the displacements within the super-element
                 DEP1  = SUPER 'DEPLA'  SUPER1 DET1;
                 RIGT1 = EXTRAIRE  SUPER1 'RIGT';
                 DEP2  = RESOU ( DEP1 ET FORC2 ) RIGT1;
        * calculation of the mass equivalent to MASS2
                 MASS3 = SUPER 'MASSE' SUPER1 MASS2;
        * calculation of an eigenmode
                 MOD1  = VIBR 'PROCHE' (PROG 0.) RIG4 (MASS1 ET MASS3);