Some Gambit Hints

Some Gambit Hints:

Correction of a complex geometry with separated parts in Gambit is the honor of subduing the geometry and parts by 3 tools:

1. Tolerance

2. Simplify
3. Merge and unite

And some times (Smooth/Heal real surface)

 

1. Couldn't create a Volume from the selected faces:

It's because of a small gap between edges, edges don’t lie on each other, points aren't same or connected.

There may be 4 kinds of gap that must be filled:

1. Between two faces that are expected to form a plane in space.

2. Between two faces that must intersect and split one by another.

3. Between two vertices of two edge that are expected to form one curve in space.

4. Two faces of two parts that must become one.

 

Solutions:

1. Tolerance: maybe your problem of volume creation error, no matter what of the above diseases have been occurred, could be solved by setting a larger value for tolerance manually.     :O

2. If have problem a, review Hint 2.

3. If problem b, read Hint 3.
4. If problem c, read Hint 4.
5. If problem d, contact me.

 

2. Non-real to real/Connection/Merge/Unite problems - there is a small gap between faces -

If a face or volume couldn’t be converted to real, it's because of it's not a healthy face.

• There exist some hard edges/edges that have used twice

• There are some kind of discontinuities/sharp parts
• There is a small gap between faces

 

Non real solution

For non-real to real at first simplify. Then try again. Not solved? Then use the solution below.

 

Solution(the upper geometry solution):

1. Convert faces to real and smooth for a few times until the deflection value become s fixed.
2. Create an upper geometry by the desired faces with tolerance(change the tolerance that let the Volume be constructed). Then:
3. Simplify all faces
4. Merge or unite

5. Convert new created v-faces to real

6. Convert Volume to real again.

Another Solution: Delete upper geometry, create a new volume using the remaining face.

 

Weak solution: to fill the small gap, IF you have a healthy gap, you can use one of surface creation commands; But often because of edge intersections and complex relative positions, you can't use this comment.

Another Solution

There are some Sharp angles. Fix them by Collapse or tools.

Another Solution

Sealing Between Volumes with 1- Sweep 2- Intersect or Split or Subtract

 

3. Sealing between a face belongs to a volume and a face
1. Fill the Small gap by face- ways:
1. Use edges to create face: (Hint 6)
2. Sweep 1 or 2 or 3 or 4 edges: and then split faces with each other an delete extra parts.
3. Using Side edges: if we have a face next to our face, we can use the edge belongs to that.
4. Skin surface/Net surface/
   Vertex rows: split line II by a 
   few points, project the points on line III and split too.
   then connect by line and then use skin surface.
   to use net surface or vertex rows should do the same for 
   edges 0 and 1 too.
5. Use upper geometry:
2. Fill the Small gap by the Volume

• Sweep the face of volume that have to be common between

The face and the volume.

• Or create some wireframe according to hint 7 but for volume.

 

4. "Split": a way of connection

If you want to merge the two curves by one curve, and merge doesn't works, then:

1. You can split edge 2 by point 2 or 3. then delete edge l or l'.

2. Try connect vertices that must be joint.

 

5. Using upper geometry

Sometimes we need to use upper geometry because :

1. We want to create a geometry for example 2D geometry, but we don’t find the proper tool among face creation tools. So we need to Create an upper topology and delete but don’t delete the lower geometry.

or

2. Because of Hint 2.

 

6. Finding a wireframe

To utilize problem b solution, maybe you need to find a wireframe between the two faces.

Step 1. Find a Wireframe

Finding line I-ways:

1. Project edge 0

2. draw a line between points a and b
3. sweep edge 0 along line II or III to cut the face, then if needed delete the new face not lower       geometries.

Finding line II and III which are the sweep curve:

1. Project edge 0
2. Project points

And then draw II and III by line

or

3. Sweep points along a part of the edge they are belonging to. Then find

Step 2. Then Connect the beginning and the end points of edges if possible.

 

7. Unite and Merge

The difference of unite and merge?

 

8. Does your Face use an edge twice?

Simplify the face.

It may be because of use of the "Unite" command.