RADIOSS One Step
Use the Surface Edit panel to perform a variety of surface editing, trimming, and creation functions. This panel also allows you to offset surfaces in their normal direction.
The Surface Edit panel contains the following subpanels:
Allows you to trim (split) a surface using nodes. The surface can be trimmed with two nodes, with multiple nodes, or with a node normal to and edge.
For a two nodes trim, you must pick two nodes that belong to a single surface. HyperMesh automatically detects the surface that needs to be trimmed. (If HyperMesh detects more than one unique surface to be trimmed, the trimming operation fails.) The surface is trimmed by a projection of the line connecting the two nodes. The projection is performed in the direction normal to the surface.
For a multiple nodes trim, HyperMesh creates a smooth line through the nodes selected (these nodes need not be part of the surface that is selected to be trimmed) and then trims the selected surfaces with projection of this line along the surface normal. These trimming operations can split the surface into multiple surfaces if the line cuts the entire surface.
For a node normal to edge trim, you must pick a node and a surface edge. HyperMesh splits/trims the surface along a straight line which is perpendicular to the selected edge and connects the edge to the selected node.
Allows you to trim/split surfaces using a line (or a group of lines). There are three methods of doing so:
Trimming a selected surface(s) to a line involves sweeping a line along a vector to create a temporary surface, and trimming the selected surface(s) with the temporary surface. You can use the entire surface/distance = toggle to set the distance the line is swept, or use a calculated distance that trims the entire selected surface(s). If the temporary surface does not intersect the selected surface(s), an error is reported. When a surface is trimmed, it is actually broken into smaller pieces (surfaces). After the surface is trimmed, you can delete any unwanted surfaces.
Example: Trimming a Surface with Lines
Example: Trimming a Surface with Offset Lines
Here, only the outer rectangular surf and the circular line are selected.
Allows you to trim or split surfaces with another surface or a plane. This function determines the intersection of the selected surfaces and a plane or a surface, and then trims the original surfaces at this intersection.
When surfaces are trimmed, they are broken into smaller pieces (surfaces). After the surfaces are trimmed, you can delete any unwanted surfaces.
Example: Trim with Planes
Example: Trim with Surface
Allows you to remove trim lines so that the trimmed surfaces return to their previous, untrimmed state.
This subpanel can be used to offset a group of surfaces by a given distance along the normals of those surfaces. A negative offset value can be used to offset these surfaces in the opposite direction of the surface normal. The topology of the surface edges (free, shared edges, and so on) is maintained during the offset function. Some individual surfaces will be trimmed or extended to maintain the connectivity. This function moves the selected surfaces to the new location.
If you want to save the original surfaces, the selected surfaces can be duplicated (using the extended entity selected popup window) before the offset. You can review the normal direction of the surfaces by clicking vector normal or color normal. If the offset direction is incorrect, the reverse normal function can be used to reverse the normal of a selected surface. If there are elements associated to the offset surfaces, the element will not move along with surfaces. The association between the elements and their surfaces is broken.
There are two major types of offset: disjointed and continuous. Disjointed offsets move the selected surfaces without retaining their connections to surrounding geometry, while continuous ones will either morph surrounding geometry to maintain connectivity, or create new surfaces to do so.
This surface has not yet been offset.
This is a disjointed offset.
This offset uses the "continuous" option.
This offset uses the "continuous" option, with separator lines specified at the edges of the offset surface.
This subpanel extends or retracts the edges of selected surfaces to meet other selected surfaces, or to close gaps between surfaces or holes within a selected surface.
Several options affect how surfaces extension behaves, including enabling or disabling the ability to shorten edges as well as extend them, or to force the extended edges to attempt to maintain the overall shape of the surface.
Shrinks the surface by drawing all of its edges (including internal edges from holes, and so on) "back" away from their starting location.
For example: if you shrink a square surface that has a circular hole in the center, the square would become smaller but the circular hole in its center would become larger, because the edge of the hole draws "backward" (that is further into the surface).
The black surface has been selected.
The edges of the selected surface pull inward, away from the initial edge locations.