Page 5: Accels
- Figure 1 - Accels Interface
Purpose: This interface is used to create accelerometers which in LS-DYNA are defined using the *ELEMENT_SEATBELT_ACCELEROMETER keyword card. An accelerometer is a tria element and all 3 nodes must be rigid. Rigid nodes are those belonging to a rigid body, a *CONSTRAINED_NODAL_RIGID_BODY, or extra nodes to a rigid body. Node1 of the accelerometer is defined in *DATABASE_HISTORY_NODE for outputting time histories to NODOUT and other binary time history databases. The accelerations are output in the accelerometer local coordinate system.
Controls:
Show - Show existing *ELEMENT_SEATBELT_ACCELEROMETER entities
Modify - Modify existing *ELEMENT_SEATBELT_ACCELEROMETER entities- Create - Create new *ELEMENT_SEATBELT_ACCELEROMETER entities
- Delete - Delete existing *ELEMENT_SEATBELT_ACCELEROMETER entities
For Show, Modify, and Delete, the Entity Operation Interface is displayed in the secondary controls area. For Create, the bottom panel is as shown in Figure 2 below.
- Label: Set current entity label type
- SBACID: Enter *ELEMENT_SEATBELT_ACCELEROMETER ID (unique number)
Generate new ID
Select all *ELEMENT_SEATBELT_ACCELEROMETER entities
Deselect all *ELEMENT_SEATBELT_ACCELEROMETER entities
Reverse selection *ELEMENT_SEATBELT_ACCELEROMETER entities
Select all entities within the selected range
Apply entries for creation/modification
Cancel this modification or selection
Exit accelerometer data interface
- Click item from list to select
Bottom Panel:
- Figure 2 - Create Bottom Panel
- Three Node - Create accelerometer by three nodes
NID1 - Pick node 1 or enter node 1 ID
NID2 - Pick node 2 or enter node 2 ID- NID3 - Pick node 3 or enter node 3 ID
- Three Position - Create accelerometer by three position
- X - Enter Origin Position X Value / X Direction / xy Plane X
- Y - Enter Origin Position Y Value / Y Direction / xy Plane Y
- Z - Enter Origin Position Z Value / Z Direction / xy Plane Z
Call Direction Dialog
Modify coordinates useing popup dialog
- IGRAV: Set value for gravitational accelerations parameter (see Keyword manual)
- INTOPT: Set value for integration option parameter (see Keyword manual)
