Manual pages | Cast3M

$$$$ PSMO     NOTICE  CHAT      11/09/12    21:17:47     7124           
                                             DATE     11/09/12
                                             
  Operateur PSMO                           Voir aussi :
    --------------   
    SOLUT  =  PSMO |    STRU1   MOD1   ( LIAI1 )    | ('FREQ' XFREQ )
                   | RIGT  ( MAST )  TBA1 ( TLIAI ) |

           ...  ('SEISME'('UX') ('UY') ('UZ') )  (| CHPO1 |)  ;
                                                 (| LCHP1 |)


    Description :
    ____________

     The PSMO operator makes it possible to calculate, in the
 calculation of a modal recombination, the contribution of the
 modes which the modal basis did not take into account. These
 modes are supposed to have a quasi-static response.

    Contents :
    __________

     STRU1   :  STRUCTURE type object

     MOD1    :  SOLUTION type object, containing the structure
                modes
               
     LIAI1   :  object describing the non-permanent linkages 
                (impacts) present in the structure (ATTACHE type)

     RIGT    :  RIGIDITE type object, structure stiffness matrix

     MAST    :  RIGIDITE type object, structure mass matrix

     TBA1    :  TABLE type object of BASE_DE_MODES subtype stemming 
                from the TRADUIRE procedure

     TLIAI   :  TABLE type object of 'POINT_DE_LIAISON' subtype,
                indexed from 1 to N points of impact, containing :
                  - TLIAI.I.'POINT'   = point of impact (POINT 
                                        type)
                           .'NORMALE' = normal of impact (POINT 
                                        type)

     CHPO1   :  object containing the spatial description of
                loadings (case of concentrated forces) or supports
                (case of a multisupported structure) (CHPOINT type)

     LCHP1   :  object containing several CHPOINTs (LISTCHPO type)

    'SEISME' :  key word indicating that the structure is subjected
                to a seismic excitation 

    'UX'     :  key word, excitation direction according to X

    'UY'     :  key word, excitation direction according to Y

    'UZ'     :  key word, excitation direction according to Z 


    'FREQ'   :  key word indicating, if the structure has solid
                modes, that the user wishes to impose the frequency
                at which the structure response will be studied

     XFREQ   :  frequency value (FLOTTANT type)

     SOLUT   :  generated object
                - of SOLUTION type and PSEUMODE subtype, if the
                  structure modes were supplied in a SOLUTION object
                - of TABLE type and PSEUDO_MODE subtype, if the
                  structure modes were supplied in a TABLE object
                  Description of SOLUT :
                    TABLE indexed by ENTIERs I varying from 1 to N
                    SOLUT . I . 'DEPLACEMENT'  = calculated pseudo 
                                                 mode (CHPOINT type)
                    case of a monosupported structure (SEISME option)
                              . 'DIRECTION'    = 1, 2, or 3
                                                 seismic direction 
                    case of a concentrated force 
                              or multisuported structure
                              . 'CHAMP_BASE_B' = CHPOINT pointer for 
                                                 which the pseudo mode
                                                 was calculated
                              . 'CHAMP_BASE_A' = CHPOINT BASE_B 
                                                 pointer projected  
                                                 onto the modal basis
                    case of a force of impact
                              . 'POINT'        = point of impact
                              . 'NORMALE'      = normal of impact


    Notes :
    ________

    * Case of a monosupported structure

      The structure is subjected to an overall seismic acceleration 
 in the given direction.
      When asking for the recombination, the user will provide the 
 real loading.

        Example for a seism of direction UX :

               SOLUT  =  'PSMO'  STRU1  MOD1  'SEISME'  'UX'  ;
           or
               SOLUT  =  'PSMO'  RIGT  MAST  TBA1  'SEISME'  'UX'  ;


    * Case of a multisupported structure

      A CHPOINT is associated with each pseudo mode.
 The pseudo mode is calculated from the field containing the
 displacements of the fixity points.
      When asking for the recombination, the user will provide the 
real loading.

       Example :

               SOLUT  =  'PSMO'  STRU1  MOD1  'SEISME'  CHPO1  ;
           or
               SOLUT  =  'PSMO'  RIGT  MAST  TBA1  'SEISME'  CHPO1  ;


    * Case of a concentrated force

      A CHPOINT is associated with each pseudo mode.
      When asking for the recombination, the user will provide the 
 real loading.

       Example for a concentrated force

               SOLUT  =  'PSMO'  STRU1   MOD1  CHPO1 ;
           or
               SOLUT  =  'PSMO'  RIGT  TBA1  CHPO1  ;


    * Case of a force of impact

      A CHPOINT is associated with each pseudo mode.

       Example for a force of impact

               SOLUT  =  'PSMO'  STRU1   MOD1  LIAI1 ;
           or
               SOLUT  =  'PSMO'  RIGT  TBA1  TLIAI  ;