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- Figure 1 – Coord Interface
Purpose:
This interface is used for showing, creating, modifying, and deleting the following LS-DYNA keyword cards:
- *DEFINE_COORDINATE_NODES
- *DEFINE_COORDINATE_SYSTEM
- *DEFINE_COORDINATE_VECTOR
Controls:
Show – Show existing *DEFINE_COORDINATE entities
Create – Create new *DEFINE_COORDINATE entities- Modify – Modify existing *DEFINE_COORDINATE entities
- Delete – Delete existing *DEFINE_COORDINATE entities
For Show, Modify, and Delete, the Entity Operation Interface is displayed in the secondary controls area. For Create:*SYSTEM and Create:*VECTOR, the Vector Operation Interface is displayed in the secondary controls area. For Create:*NODES, the bottom panel is as shown in Figure 2 below.
- Label: Select label type
- Coord Type: Select coordinate type
- CID: Coordinate ID. A unique number has to be defined
Generate a new ID for keyword
- Title: Enter a title for the coordinate entity
Select all *DEFINE_COORDINATE entities
Deselect all *DEFINE_COORDINATE entities
Reverse selection
Select all entities within the selected range
Apply entries for creation/modification or selections for deletion
Cancel entries for modification
Write selected coord data to file
Exit *Define_Coordinate Data interface
- Click item from list to select
Bottom Panel:
- Figure 2 – Create:*NODES Bottom Panel
N1 – Enter node ID for node at local origin
N2 – Enter node ID for node on loacal x-axis- N3 – Enter node ID for node on local x-y plane
- Flag: Set to unity, 1, if the local system is to be updated each time step for the BOUNDARY_SPC nodal constraints and ELEMENT_BEAM type 6, the discrete beam element. Generally, this option when used with nodal SPC’s is not recommended since it can cause excursions in the energy balance because the constraint forces at the node may go through a displacement if the node is partially constrained.
