The Break method with the Curve option creates two surfaces by breaking a surface or solid face at a curve location.The curve location does not have to lie on the surface, but it must intersect on opposite edges of the surface or face. The curve location can be a curve, an edge or other curve locations provided on the Curve select menu.

Breaks Surface 1 at Curve 3. Notice that Curve 3 does not lie on Surface 1. Instead, Patran projects the curve break location on the surface. Also, Delete Original Surfaces is pressed in and Surface 1 is deleted.

This example is the same as the previous example, except the curve break location is defined by Points 8 and 9 using the Curve select menu icon listed below.

Breaks a face of Solid 1 using the Surface select menu icon listed below, at the break location of Curve 1.

The Break method with the Surface option creates two surfaces by breaking a surface or solid face at a surface location.The surface break location must intersect the surface or face on opposite edges. The surface break location can be a surface or a solid face.

Creates Surface 4 and 5 by breaking Surface 1 in half with the break location of Surface 3.

This method breaks a surface with a plane. The surface will be broken along its intersection with the plane.

Creates Surfaces 3 and 4 by breaking Surface 2 in half with the break location of Plane 1.

The Break method with the Point option creates two or four surfaces by breaking an existing surface or solid face defined at a point location. If the point is on an edge, then two surfaces are created. If the point is located on the interior, then four surfaces are created. The point location can be a point, a node, a vertex, a curve/curve intersection or a curve/surface intersection.

Breaks Surface 1 into four Surfaces at Point 5. Notice that Delete Original Surfaces is pressed and Surface 1 is deleted.

This example is the same as the previous example, except that the break location is at Point 4 instead of Point 5, and Surfaces 2 and 3 are created instead of four surfaces.

Breaks Surface 1 along the diagonal into Surfaces 2 and 3 at Point 1 which is located at the vertex of Surface 1.

The Break method using the 2 Point option creates two surfaces by breaking an existing surface or solid face defined by two point locations. The point locations must lie on opposite edges of the surface or face. The point locations can be points, nodes, vertices, curve/curve intersections, or curve/surface intersections.

Breaks Surface 1 into Surfaces 2 and 3 defined by Point 5 and Node 1. Notice that Delete Original Surfaces is pressed in and Surface 1 is deleted.

The Break method with the Parametric option creates two surfaces from an existing surface or solid face. The break location is defined at the surface’s or face’s parametric or coordinate location, where has a range of and has a range of .

Breaks Surface 1 into Surfaces 2 and 3 at . Notice that Delete Original Surfaces is pressed and Surface 1 is deleted and that the parametric direction is displayed.

This example is the same as the previous example, except that the break location is at .

Breaks a face of Solid 1 by using the Surface select menu icon listed below at .

The Blend method creates a set of parametric bi-cubic surfaces from an existing set of two or more surfaces or solid faces by enforcing a first derivative continuity across its boundaries. The set of existing surfaces or faces must share at least one edge with another surface or face in the set.

Blends Surfaces 1, 5, 3 and 4 with a default weight factor of 0.5 applied to all surface edges.

Blends Surfaces 1 through 4 with a weighting factor of 1.0 applied to two edges (highlighted in the “Before” picture).

The Disassemble method operates on one or more trimmed surfaces and creates the parent surface that has the same curvature as the trimmed surface. A trimmed surface can be created either by using the Geometry Application’s Create/Surface/Trim form or by using the Create/Surface/Planar Trim form.

Operates on Surface 2 which is a general trimmed surface. Surface 3 is the new parent surface. Notice that new curves associated with Surface 2 are also created.

Operates on Surface 1 which is a planar trimmed surface. Notice that the new parent surface, Surface 2, is also planar and that new curves associated with Surface 1 are created.

With this form you can remove a given edge of a trimmed surface. This process differs from the vertex removal function which was topological in nature. This operation is both topological and geometrical in that the shape of the trimmed surface will be altered as well as the topology. The edges adjacent to the removed edge will be extended until they intersect. This intersection must take place within the domain of the parent surface.

With this form you can automatically remove all edges whose length is less than a specified value.

With this form you can automatically add edges to a surface.

With this form you can automatically replace edges on a specified surface with an existing curve.

The Edge Match method with the 2 Surface option recreates the second surface of a specified pair that share two common vertices but has a gap or unmatched edges. The gap must be less than 10 times the Global Model Tolerance or else Patran will not close the gap. The existing pair of surfaces or faces do not need to have matching parametric and orientations. This method is useful for correcting topologically incongruent surface pairs so that they are congruent before you mesh. Also see Matching Adjacent Surfaces, 269.

Edits Surface 2 which is specified as the second surface of the pair and closes the gap between Surfaces 1 and 2.

This example is the same as the previous example, except Surface 1 is specified as the second surface of the surface pair.

The Edge Match method with the Surface-Point option recreates a specified surface as a trimmed surface that includes an additional cursor defined vertex point. This method is useful for correcting topologically incongruent pairs of surfaces so that they are congruent before you mesh.

Recreates Surface 1 which was a parametric bi-cubic surface, into a trimmed surface which has the vertices Points 1, 2, 3, 4 and 5 so that Surface 1 is congruent with Surfaces 2 and 3. The additional vertex specified in the Point List was cursor selected at Point 5 by using the Vertex select menu icon listed below.

This form is used to extend two surfaces to their line of intersection.

Extend surface 1 to the line of intersection of surface 2.

This form is used to extend a surface to an intersecting curve.

Extend Surface 1 to the edge of Surface 2.

This form is used to extend a surface to an intersecting plane.

Extend Surface 1 to Plane 1.

This form is used to extend a surface to an intersecting point.

Extend Surface 1 to Point 1.

This form is used to extend a surface to an intersecting surface.

Extend Surface 1 to the line of intersection of Surface 2 and break Surface 2 at the line of intersection to create Surface 3 and 4, then delete Surface 2.

This form is used to extend a surface by a percentage in the U and/or V parametric directions.

Extend Surface 1 by 100% in the U direction starting at U-Max = 1 and shrink Surface 1 by 50% in the V direction starting at V-Max=1.

This form is used to extend a surface by a fixed length.

Extend Surface 1 by a fixed length of 5.0 units in the X direction.

The Refit method creates a non-uniformly parameterized network of bicubic patches from existing surfaces. The Refit Tolerance is input as the refit parameter.

The Reverse method redefines the connectivity of an existing set of surfaces or solid faces by exchanging the positive and directions of the surfaces or faces. You can plot the and directions for the surfaces by pressing the Show Parametric Direction toggle on the Geometric Attributes form found under the menu Display/Geometry.

Reverses the parametric and directions for Surface 1. Notice that the parametric directions are displayed on the surfaces. Also, notice that Auto Execute is not on so that you can press the Draw Normal Vectors button without executing the form.

The Sew method sequentially combines the actions of the Edit/ Point/ Equivalence method to equivalence surface vertices and the Edit/ Surface/Edge Match method to merge edges. The composite action is a "sewing" of the surfaces. Vertices and edges are both equivalenced according to the restrictions of the previously mentioned methods; however, since the operation is sequential, vertices will already be equivalenced before doing the edge merging.

Edits surfaces 1 and 2 by closing the gap between edges which share common vertices.

The Subtract method .

This form is used to trim a Surface with one of its edges and optionally delete the surface with the smallest surface area after the trim.

Trim the sliver from surface 5 by selecting the surface edge surface 5.4.

This form facilitates the creation of a fillet edge between two existing edges sharing a given vertex. This operation, when successful will replace the input vertex with a new edge.

The Add Hole method using the Center Point option adds a circular hole to a Surface. The circular hole is defined in the tangent plane of the supplied, manifolded center point.

This will add nine circular holes to surface 1 using points 52:60. Warning messages will be generated for the other points due to interference of holes at these points with surface edges.

The Add Hole method using the Projection Vector option adds a circular hole to a Surface. The circular hole is defined in the plane of the supplied vector and vector-projected onto the surface.

This will add two holes to surface 6 using points 78 and 82 and the projection vector defined by the x axis of Coordinate Frame 0.

The Add Hole method using the Inner Loop option adds a hole to a Surface. The hole is defined by the supplied closed, chained curves which will define inner loops for the creation of a Trimmed Surface.

This will add 5 new holes to surface 6 using curves 14, 15, 16, 29, and 30.

The Remove Hole method removes a hole from a Trimmed Surface. The hole to remove can be any edge-curves which are inner loops of a Trimmed Surface.

This will remove all the small inner loops from surface 4.

The Add Vertex method adds a vertex to a surface. The point used to create a vertex can be any point which is on the edge of the selected surface. If a hardpoint is converted to a surface vertex in the process of adding a vertex to a surface, then this point(vertex) cannot be reassociated to the surface as a hardpoint.

This will add a vertex to surface 2 using point 3. The result is surface 2 becomes a trimmed surface with five vertices.

The Remove Vertex method removes a vertex from a Trimmed Surface. The vertex to remove can be any vertex of a Trimmed Surface with the exception that one vertex per loop must remain.

This will remove vertex 3.4.2 from trimmed surface 3. The result is a parametric bicubic surface.