Manual pages | Cast3M

$$$$ PSIP     NOTICE  CHAT      11/09/12    21:17:47     7124           
                                             DATE     11/09/12
                                     
 
    Operateur PSIP                            Voir aussi : TRIE
    --------------   
    CHP1 (CHP2) = PSIPHI MAIL1 MAIL2 (CRIT1) ('DEUX' | P1 (P2) | );
                                                     | MAIL3   |
                              


    Description :
    ____________

    For points of MAIL1, this operator compute the distance to the 
    line (2D seg2) or the surface (3D tri3,qua4) described by MAIL2.
    The field CHP1 concern at least, nodes nearer than a given distance 
    CRIT1.
    If option DEUX is used the P1 is the ending point of the line (2D)
    or the front line MAIL3 (3D) of the surface for which the operator
    compute a CHP2 field orthogonal to the previous one.
    This last field is the distance to plane perpendicular to the line 
    at the P1 point or along the front line.
    If a second point P2 is given, CHP2 is calulated from the nearest 
    point.
    


      Contents :
      _________

      CHP1  : object of type CHPOINT with components PHI representing the
              signed distance to the line or to the surface.
     
      CHP2  : object of type CHPOINT with components PSI representing the 
              signed distance to the plane peropendicular to the MAIL2
              object at PD point or MAIL3 line
      
      MAIL1 : mesh, giving nodes for which distance is required.

      MAIL2 : mesh of a line in 2D (seg2) and of a surface in 3D
      
     'DEUX' : option word asking the computation of CHP2

      P1    : ending point of line MAIL2 

      P2    : second ending point of line MAIL2 

      MAIL3 : front line of the surface MAIL2 (seg2).

      CRIT1 : is the minimum ditance for which CHP1 and CHP2 have to be
              evaluated.



       Remarks : 
       _________

   For eXtended Finite Element Modelling in fracture mechanics,
   -CHP1 and CHP2 are level set functions describing the local frame of 
   the crack.
   -MAIL2 represents the crack line or the crack plane.
   -In 2D, P1 (and P2) represent the crack tip(s).
   -In 3D, MAIL3 represent the crack front.