HD16900: CENTER OF GRAVITY ON BENT PIPE

APAR status

• Closed as program error.

Error description

• Center of Gravity on bent pipe
  
  Scenario:
  Calculation of CG fails on some bends. When this
  happens, a portion of the pipe is changed to
  SOLIDM and the CG result is blank. This is
  inconsistent in that some bent pipes are okay while
  others are not.
  
  Scenario
  > Using AEC PIPE_DES, creae a bent pipe
  > Run function AECMGMT/ANALYSIS/GEOMETRY.
  > Select pipe. In Geomteric Analysis window,
  select CENTER of GRAVITY
  
  
  
  
  .
  

Local fix

Problem summary

• Center of Gravity on bent pipe
  Center of Gravity on bent pipe
  
  Scenario:
  Calculation of CG fails on some bends. When this
  happens, a portion of the pipe is changed to
  SOLIDM and the CG result is blank. This is
  inconsistent in that some bent pipes are okay while
  others are not.
  
  Scenario
  > Using AEC PIPE_DES, creae a bent pipe
  > Run function AECMGMT/ANALYSIS/GEOMETRY.
  > Select pipe. In Geomteric Analysis window,
  select CENTER of GRAVITY
  
  
  
  
  .
  

Problem conclusion

• Incident Diagnosis
  When selecting many AEC elements (complete SHD
  model of a section or block, or many pipes or
  many HVAC parts or many equipments, or (just a
  few) round or rectangular toroids,
  ANALYSIS/GEOMETRY/ABSOLUTE fails to produce
  center-of-gravity, volume or wetted area.
  
  
  Correction Explanation
  Several corrections and change in algorithm to
  produce the result.
  If not a single complete solid can be created,
  instead of exiting by error, a new solid will be
  started, and the combined COG of these individual
  solids will be calculated. There is some (small) risk
  of intersecting bodies being counted twice for the
  COG (e.g. on equipments) and the wetted area and
  volume being too big...
  
  
  Answer and By-Pass
  NONE
  
  .
  

Temporary fix

Comments

APAR Information

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

  HD16893

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

  UH04626 UH04741

Fix information

• Fixed component name

  CATIA FOR SGI

• Fixed component ID

  562630000

Applicable component levels

• RI24 PSY UH04626

     UP04/04/07 I 1000