HD43853: GSD / GAP OF SURFACE IS DETECTED AFTER 'EDGEFILLET' IS CREATED

APAR status

• Closed as Permanent restriction.

Error description

• GSD / GAP OF SURFACE IS DETECTED
  AFTER 'EDGEFILLET' IS CREATED
  .
  

Local fix

Problem summary

• GSD / GAP OF SURFACE IS DETECTED AFTER 'EDGEFILLET' IS CREATED
  GSD / GAP OF SURFACE IS DETECTED
  AFTER 'EDGEFILLET' IS CREATED
  .
  

Problem conclusion

• THIS PROBLEM IS PERMANENT RESTRICTION IN
  CATIA
  .
  Incident Diagnosis
  In GSD, the Connect Checker Between Surfaces
  analysis tool detect a gap in medium
  discretization on an edge, and does not detect it
  after an edge fillet creation.
  .
  Restriction Explanation
  As mention in CATIA V5 technical documentation,
  the Connect Checker Between Surfaces
  tool performs a connection analysis thanks to a
  discretization technique. The user
  has the choice between four discretization types
  (from Light to Fine) which has
  for effect to define "the number of spikes that
  corresponds to the number of points
  used for the computation : 5, 15, 30 or 45 points".
  .
  By default, discretization mode is set to "Medium",
  ie. 30 points. If you reduce the
  size of the connecting edge of two surfaces, and
  you keep the same parameter of
  discretization, the locations of the analysis spikes
  differ, and a very short gap
  previously detected could be missed.
  .
  See the attached pictures for visual explanation of
  this phenomenon in the case of this IR :
  .
  1- EdgeFillet.1_Radius09_MediumDiscretization.jpg :
  -----------------------------------------------
  Before fillet radius modification, the medium
  discretization spikes does not detect
  the gap represented in blue (the discretization is
  not fine enough).
  .
  2- EdgeFillet.1_Radius1_MediumDiscretization.jpg :
  ----------------------------------------------
  After fillet radius modification to 1.0 mm,
  connecting edge becomes smaller. The
  medium discretization spikes detect the gap zone
  (we have a spike in blue zone).
  .
  The fact that Connect Checker results depend on
  the size of the geometry checked is
  normal and explained by its discretization
  technique.
  .
  By-Pass
  On a given connection, to have the best analysis
  possible, try to change discretization
  (Medium ---> Fine for example) so as to have
  finest results when gaps happen on very short
  zone :
  .
  See EdgeFillet.1_Radius09_FineDiscretization.jpg :
  before fillet radius modification, the
  "Fine" discretization mode with 45 points has spike
  on small gap zone represented in blue :
  gap is detected.
  .
  

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