Figure 1. The imported model containing faults (left) and the result of the Repair part
tool on the model (right).
On the Transform tab in the
Repair group, click the Repair Part icon.
After repairing a part, the part is renamed to the default RepairPart1
and the repair part icon is displayed next to the part in the model tree.Figure 2. A repaired part displayed in the model tree.
Figure 3. The Repair Part dialog, Advanced
tab.
Advanced settings
Remove small edges
Edges are removed whose arc length is less than the Maximum length of small
edges.
Maximum length of small edges
Edges are removed with arc lengths of edges less than the Maximum length of
small edges.
Upper bound on deviation between original and repaired geometry
The tolerance for repairing the part.
Specify edge tolerance
To be more consistent with the surfaces in the model, it may be the case that the
distance changes in the surface geometry are more important than the exact locations of
the edges. If this option is selected, a more lenient tolerance for edge geometry can be
specified for Edge repair tolerance.
Edge repair tolerance
An optional tolerance that is specified to permit greater latitude in repairing
edges.
Remove self-intersections
When a surface contains self-intersections located outside its face boundaries, then
this portion of the surface will be removed by splitting the surface. This may result in
the face being split into multiple faces.
Advanced self-intersection removal
A more in-depth algorithm is used to fix self-intersecting surfaces.
Remove discontinuities
Surface discontinuities are removed. If the discontinuity has a change in the tangent
of less than the angular tolerance, the discontinuity will be smoothed. If the change in
tangent is greater than Angular tolerance for geometry smoothening
(degrees), the face or edge will be split at the surface’s discontinuity.
The same applies to curve G1 discontinuities.
Angular tolerance for geometry smoothening (degrees)
The tangent change angle in degrees above which G1 discontinuities are removed by
splitting topology rather than smoothening the geometry.
Suppress surface modifications
Surface geometry is preserved and repairs are confined to repairing face boundaries as
far as possible.
Repair bad face-face errors
Attempt to repair face-face collisions in the body.
Repair surfaces by simplifying to blends
Surfaces are cleaned by simplifying to blends.
Simplify B-surfaces to analytic / swept / spun surfaces
Any B-surfaces are simplified where possible to planes, cylinders, cones, spheres or tori
where possible.
Simplify swept / spun surfaces to analytic surfaces
Any swept or spun surfaces are simplified to planes, cylinders, cones, spheres or
tori.
Simplify B-curves to analytic curves
Any B-curves are simplified to lines, circles or ellipses.
Simplify rational B-geometry to non-rational geometry
Any rational B-surfaces are simplified to non-rational B-surfaces. Non-rational B-surfaces
have fewer degrees of freedom than rational B-surfaces.
Reduce high-degree and trim large B-geometry
Any high-degree B-surfaces are trimmed or simplified to cubic B-surfaces.
Simplify to constant U or V curves
The tool will attempt to simplify SP-curves2 to be
constant in one parameter (U or V).
Merge multiple segments
The tool will attempt to merge multiple curve segments into a single segment.
Operating precision (tolerance)
The tolerance for replacement geometry.
Specify edge tolerance
To be more consistent with the surfaces in the model, it may be the case that the distance
changes in the surface geometry are more important than the exact locations of the edges. If
this option is selected, a more lenient tolerance for edge geometry can be specified for Edge
repair tolerance.
Edge repair tolerance
This is an optional tolerance to permit greater latitude in repairing edges.
Convert surfaces to blend surfaces
The surfaces are cleaned by attempting to simplify to blends.
Constrain surface normals along smooth edges
The tool will attempt to ensure that smooth edges will remain smooth3 since the maximum deviation between
the normals for these faces will be equal to the surface normal tolerance.
Surface normal tolerance (degrees)
The angular tolerance for constraining surface normals in degrees.
1 A surface can be composed of several NURBS surfaces known as patches. These
patches should be fitted together in a way that the boundaries are invisible. This is
mathematically expressed by the concept of geometric continuity. One of the options to
establish geometric continuity is by means of Tangential continuity (G1). It requires
the end vectors of two curves or surfaces to be parallel which eliminates sharp
edges.
2 They are surface parameter curves and are
defined only in terms of the U and V parameters of the surface they belong to.
3 Edges between faces
where there is a smooth transition from face to face.
Repair Part icon.
