Advanced Selection Application

The geometric characteristics and topology can also be implemented in the modeling process in GTS. Therefore, the geometric entities which include special characteristics, such as direction and plane, can be selected.

The following examples are the most frequently used cases of utilizing the geometric characteristics and topology in GTS.
 

To Define Direction or Revolution Axis

It is important to note when executing commands such as Translate, Extrude, Project, Rotate and Revolve, the user must define the direction or revolution axis to complete the operation.

In GTS, the direction and the revolution axis can be defined using various entities which have the relevant characteristics.
 

To create tunnels in 3D space, 2D edges are extruded in the direction of the existing straight line (the same direction also can be applied by selecting the tunnel section)

To create a pipe from a circle, the extrusion direction can be defined by the normal direction of the plane where the circle presents.

To copy the propeller by rotating around the axis, it is convenient to select the center arc as revolution axis. The revolved body face can also be selected.
 

As shown in the above examples, any direction and rotational axis can be easily defined using the unique characteristic of the geometric entities.

In addition, GTS provides various snap functions for defining the 2 Point Vector and the 3 Point Plane, and it highly increases the workability during complex modeling procedure.
 

To Select using the Topological Relationship of Geometry Shapes

Due to the concept of topological relationship in GTS, the selection of Sub-Shapes can be done by using higher level geometry. In other words, by selecting a higher level entity, the user can select all of its Sub-Shapes at once.
 

<Selecting Sub-Shapes using Upper Shape>
 

For example, in the above figure each edge must be selected separately if the Selection Filter is set to Edge. However, by setting the Selection Filter to Face, the user can select the four Sub-Edges at once. Thus, it is recommended that a higher level entity be used if all of its Sub-Shapes are to be selected.
 

To Select Nodes and Elements

After setting the Selection Filter to Mesh, the user can select Mesh Sets from the Work Window or the Works Tree. Since nodes and elements are included in a Mesh Set, all of them will be selected together at the same time.

If mesh is generated on Geometry, its nodes and elements can be selected by the Geometry unit such as Face or Edge. In order to select any item by Geometry, that item must be visible on the screen.
 

Selecting Nodes which are belong to Terrain Surface
 

In order to select any items by Geometry, that item must be visible on the screen.
 

Other Useful Selection Tools

In order to provide maximum workability to apply the load and boundary conditions, GTS offers additional selecting tools which are customized specially for the load and boundary conditions.

The most frequently used tools among them are the Free Face selection in 3D mesh and the Free Edge selection in 2D mesh.
 

Example of  selecting Upper (Lining) for 3D Mesh Free Face Node selection