×
INTELLIGENT WORK FORUMS
FOR ENGINEERING PROFESSIONALS

Log In

Come Join Us!

Are you an
Engineering professional?
Join Eng-Tips Forums!
  • Talk With Other Members
  • Be Notified Of Responses
    To Your Posts
  • Keyword Search
  • One-Click Access To Your
    Favorite Forums
  • Automated Signatures
    On Your Posts
  • Best Of All, It's Free!
  • Students Click Here

*Eng-Tips's functionality depends on members receiving e-mail. By joining you are opting in to receive e-mail.

Posting Guidelines

Promoting, selling, recruiting, coursework and thesis posting is forbidden.

Students Click Here

Jobs

Airfoil points

Airfoil points

Airfoil points

(OP)
I recently imported points for an airfoil into CATIA V5 via macros and now the problem i'm having is I want to make it to a solid piece but when I go to sketcher mode, I can not use the spline function since it will not let me click on the points. How can I connect the points to form a close body to form a solid part? And is there an easier way to make it into a solid part without manually connected each point with a spline line? There must be an easier way! Thanks!

 

RE: Airfoil points

When inside the sketch, project the points into the sketch, then you will be able to pick them to use with the spline function.  

Or,
Swith to GSD workbench and use the spline tool.  

--Jay

RE: Airfoil points

I wouldn't use the spline from a sketcher, use the GSD spline instead and if the points are on a plane use work on support and then the spline feature.

Work on support is like a sketcher on steroids, it can be applied on curved surfaces. When a support is active all wireframe functions like line, spline etc will be set on the support. So the wireframe function will be easier to apply with a dimension less.

RE: Airfoil points

knightzero3d,

Before you import the point dataset, make sure all of the points have a common Y-coord value (as shown in your sketch).  Then create a plane at that Y-coord dimension in CATIA.  You can then use GSD to create a 3D spline through the points that is supported on the plane.  

Also make sure that the point set in your spreadsheet is listed in order along the curve, so that they will be sequentially named and ordered when they are created in CATIA.  That way you can select the points easily in the tree by highlighting, instead of having to select them one-by-one on the screen.

If you wish to make a solid from this curve, it must be closed.  You can still make a surface from an open curve.

Good luck.
terry

RE: Airfoil points

sorry but i disagree with them, about making the spine on a suport that is. If you just create it thru the points it wil be more stable and have greater odds of not failing on a replay or update of the part. if you are looking to have a flat profile to create an extrude fro m then you should create the spile and then project it on to a plane, then extrude. it is an extru step but well worthit if the points need to change due to new scan data or supervisor "sugestions"  

RE: Airfoil points

to jagodragon

I think you mean SPLINE not spine or spile...

If points are to be updated (because of new value) then curves will also have to be re created because:

1 it is faster to create a 'new curve' on 20+ pts than to change definition of 'old curve'
2 once 'new curve' is built just do a replace on the 'old curve'
3 all constructions (surface or solid) using 'old curve' will now be redirected to 'new curve'

Personally I would create surfaces from 4 areas of points: Leading edge, trailing edge, pressure face, suction face.
If I had the choice I would use FSS not GSD to create curves (not sketches) and surfaces.
 

Eric N.
indocti discant et ament meminisse periti

Red Flag This Post

Please let us know here why this post is inappropriate. Reasons such as off-topic, duplicates, flames, illegal, vulgar, or students posting their homework.

Red Flag Submitted

Thank you for helping keep Eng-Tips Forums free from inappropriate posts.
The Eng-Tips staff will check this out and take appropriate action.

Reply To This Thread

Posting in the Eng-Tips forums is a member-only feature.

Click Here to join Eng-Tips and talk with other members!


Resources