HD27070: SHAPE DESIGN : CONTINUITY BETWEEN FILL SURFACE AND SUPPORT FACE IS NOT TANGENT

APAR status

• Closed as documentation error.

Error description

• Shape Design : continuity between fill surface and
  support face is not tangent (APAR HD21867)
  .
  With tangency tolerance equal or inferior to
  0.5degree, CATIA considers that 2 faces which
  have an angular (angle) discontinuity <0.5deg
  are 'continuos in tangency' (G1)
  .
  If the checker result is <0.5deg, it means that
  CATIA will consider the faces as G1, but it is not
  true that all the geometry created above will be
  also a G1, some operators (like sweep, loft...) can
  spoil the quality.
  .
  About Fill Surface function, the tangent option of Fill
  does not create the surface of the smallest degrees
  by all possible, only creating the surface which has
  less than 0.5 degrees.
  In other words, even if the surface with 0 deg
  can be created mathematically, the surface which
  has less than 0.5 degrees is created.
  .
  .
  

Local fix

Problem summary

• Shape Design : continuity between fill surface and support face
  is not tangent
  Shape Design : continuity between fill surface and
  support face is not tangent (APAR HD21867)
  .
  With tangency tolerance equal or inferior to
  0.5degree, CATIA considers that 2 faces which
  have an angular (angle) discontinuity <0.5deg
  are 'continuos in tangency' (G1)
  .
  If the checker result is <0.5deg, it means that
  CATIA will consider the faces as G1, but it is not
  true that all the geometry created above will be
  also a G1, some operators (like sweep, loft...) can
  spoil the quality.
  .
  About Fill Surface function, the tangent option of Fill
  does not create the surface of the smallest degrees
  by all possible, only creating the surface which has
  less than 0.5 degrees.
  In other words, even if the surface with 0 deg
  can be created mathematically, the surface which
  has less than 0.5 degrees is created.
  .
  .
  

Problem conclusion

• THIS MODIFICATION WILL BE INCLUDED IN CATIA
  DOCUMENTATION DELIVERED WITH CATIA
  VERSION 5 RELEASE 15.
  NOTE THAT DOCUMENTATION WILL ALSO BE
  INCLUDED IN V5R14SP02.
  .
  Documentation Reference
  FreeStyle Shaper, Optimizer & Profiler User's Guide
  Basic Tasks, Analyzing Curves and Surfaces
  .
  MODIFICATION:
  In chapter Checking Connections Between
  Surfaces I added the following information:
  .
  When the minimal distance between two vertexes
  is inferior to 1 micron, the vertexes are merged
  and the surface is considered as continuous in point.
  .
  When the angle between two surfaces is inferior to
  0.5 degree, the surface is considered as continuous
  in tangency.
  .
  In chapter Checking Connections Between Curves,
  the following information is added :
  .
  When the minimal distance between two vertexes
  is inferior to 1 micron, the vertexes are merged
  and the curve is considered as continuous in point.
  .
  When the angle between two curves is inferior to
  0.5 degree, the curve is considered as continuous
  in tangency.
  .
  .
  

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

Applicable component levels