HC54475: SKETCHER - OVERCONSTRAINT WHEN ADDING CONINCIDENT CONSTRAIN BETWEEN A SKETCH AND A PAD.

APAR status

• Closed as documentation error.

Error description

• ABSTRACT: SKETCHER - Overconstraint when Adding coincident
  constraint.
  
  We created the sketch in Sketch.3 and when we try to constrain
  it to the bottom surface of the part it goes into
  overconstraint.
  It appears that a 1 mm dimensional constraint on the 45 degree
  angle lines is what is causing the problem but we do not
  understand why constraining it to be coincidence with the
  bottom surface causes this to go into overconstraint.
  If anything I would have thought that it would have been
  overconstrained prior to our making them conincident.
  

Local fix

Problem summary

• The addition of a constraint on a Sketch overconstraints it.
  The overcontraint contraints are displayed with a Purple color.
  
  The Sketch was not fully updated. Some constraints was not
  applied, or badly applied.  After a back and forth in the
  Sketcher , the 3D geometry is not the same than previously.
  It explain why new constrains added by the user had a
  unpredictable result.
  

Problem conclusion

• Constraint purple color will be documented.
  
  THIS MODIFICATION WILL BE INCLUDED IN CATIA DOCUMENTATION
  DELIVERED WITH CATIA VERSION 5 RELEASE 3
  
   DOCUMENTATION REFERENCE:
   MANUAL  ===> catia.Sketcher user's guide
   CHAPTER ===> Using Constraints
   PAGE    ===> -
  
   MODIFICATION:
  In tasks called "Before you Begin",
  
  At the end,
  In paragraph called "What About Constraint Colors ?"
  
  Add the following:
  
  " Purple: Overconstrained Element
    ===============================
  
  The dimensioning scheme is overconstrained:
  too may dimensions were appplied to the
  geometry.
  Remove one or more dimensional constraints."
  

Temporary fix

Comments

APAR Information

• APAR is sysrouted FROM one or more of the following:

• APAR is sysrouted TO one or more of the following:

Fix information

• Fixed component name

  CATIA V5 NT_INT

• Fixed component ID

  569151000

Applicable component levels