Manual pages | Cast3M

$$$$ @OTPOUT  NOTICE  CHAT      11/09/12    21:17:30     7124           
                                             DATE     11/09/12
                                             
  Procedure @OTPOUT                             Voir aussi :
    ------------------   
    TAB1 DEP1 = @OTPOUT FLOT1 ENTI1 FLOT2 FLOT3 FLOT4  FLOT4 FLOT5
                        TAB2  TAB3
                        FORC1 RIG1 TAB4;
                        

    Description :
    _____________

     This procedure used in interactive mode enables the user to
 optimize both the heights and the bases of systems of beams
 with rectangular profile according to the FULL-STRESS-DESIGN method.



    Contents :
    __________

    TAB1   :  TABLE type object; TAB1.I (LISTREEL type) for the i-th
              region supplies a list containing the values of basis,
              height, and the surface of the profile stemming from
              the optimization I (ENTIER type),

    DEP1   :  displacement field of the optimized structure
              (CHPOINT type),

    FLOT1  :  convergence criterion for the equivalent sigma
              (FLOTTANT type),

    ENTI1  :  maximum number of iterations (ENTIER type),

    FLOT2  :  initial basis of the structure beams, same value
              for all the regions (FLOTTANT type),

    FLOT3  :  initial height of the structure beams, same value
              for all the regions (FLOTTANT type),

    FLOT4  :  optimum value of the equivalent sigma, calculated
              from normal flexural and membrane type efforts
              (FLOTTANT type),

    FLOT5  :  minimum dimension permitted for the beams
              (FLOTTANT type),

    TAB2   :  table containing for the i-th region the relative object
              MMODL (TABLE type),TAB2.I (MMODL type), I (ENTIER type),

    TAB3   :  table containing for the i-th region the relative object
              with the material properties (TABLE type),
              TAB3.I (MCHAML type), I (ENTIER type),

    FORC1  :  force field (CHPOINT type),

    RIG1   :  stiffness associated with both the linkages and the
              part of the structure which is not subjected to an
              optimization (RIGIDITE type),

    TAB4   :  table containing for the i-th region the relative vector
              for directing the local axes (TABLE type), TAB4.I (POINT  
              type), I (ENTIER type),


    Note :
    ______

    -  Mathematically speaking, this method offers an optimum
  solution for isostatic structures.
    - The structure is divided in regions in which the dimensions 
 of the beams are considered to be uniform.
     - The convergence can be controlled by a parameter which is
 called on, in interactive mode, at each iteration; it aims at
 reducing or amplifying the variation of the layers evaluated at 
 each iteration on the basis of the ratio between the region  
 maximum equivalent sigma and the optimum equivalent sigma.