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Spline panel |
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Spline panel |
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»Click here to display Table of Contents«
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Spline panel |
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Spline panel |
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User Profiles: |
Incremental_LS-DYNA Die Module |
Use the Spline panel to create a shell mesh and/or surface. A mesh and surface can be created using nodes, points, or lines. You can also use the spline function to create a mesh without a surface, or a surface without a mesh.
Multiple lines, nodes, or points are required. A mesh and/or surface is created using these lines. Lines or nodes can be selected in any order. The correct order is determined when creating the mesh/surface.
There is no limit on the number of lines, points, or nodes that you can choose when creating a spline surface. You can create a mesh using one line or ten lines (of course, trying to create surfaces using a single straight line would not be useful. To create a surface from one line, the line must be curved). You can select a set of lines, points, or nodes that do not form a closed loop. Disconnected entities are connected with straight lines, and create a spline surface and/or mesh within the boundary formed by the chosen entities and the constructed lines. If the lines selected to create a spline are edges of an adjoining surface, the edge topology is updated to make them shared edges, and considers the curvature of the adjoining surfaces when creating the spline surface.
When creating a spline surface, with or without a mesh, using surface edges, select keep tangency to force the newly-created spline to form a smooth transition with its surrounding surfaces, without feature angles between the new surface and the surrounding ones.
When creating a mesh and surface with nodes, they are automatically stitched to the new surface/mesh by default.
Lines are selected |
The spline surface is created |
Points are selected |
The spline surface is created |
There are no subpanels on the Spline panel. All inputs and command buttons are located on the main panel.
Input |
Action |
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entity selector |
Select nodes, lines, or points. |
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meshing option |
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keep tangency |
Forces a newly-created spline to form a smooth transition with its surrounding surfaces, without feature angles between the new surface and the surrounding ones. Valid for surface edge line selection only. |
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keep line endpoints for planar splines |
Keeps line endpoints of surfaces created with closed spline/filler lines. Valid for surface edge line selection only. |
The mesh w/o surf option does have some limitations, such as:
| • | It forces the same number of nodes on opposite sides in the Ruled panel. |
| • | Selected lines should form a closed loop in the Spline panel. |
The first three options are variations of the same function, so the mesh/surface generated are also the same.
Command Buttons
The following action buttons appear:
Input |
Action |
create |
Creates the spline surface. |
reject |
Reverts the most recent change. |
return |
Exits the panel. |
Create a spline surface by selecting lines
Create a spline surface by selecting nodes or points
