/SENSOR/DIST

Block Format Keyword Describes the sensors used to activate or deactivate an object according to distance.

Format

(1) (2) (3) (4) (5) (6) (7) (8) (9) (10)
/SENSOR/DIST/sens_ID/unit_ID
sens_title
Tdelay                
node_ID1 node_ID2 Dmin Dmax        

Definition

Field Contents SI Unit Example
sens_ID Sensor identifier.

(Integer, maximum 10 digits)

  
unit_ID Optional unit identifier.

(Integer, maximum 10 digits)

  
sens_title Sensor title.

(Character, maximum 100 characters)

  
Tdelay Time delay.

(Real)

 [ s ]
node_ID1 Node identifier 1.

(Integer)

  
node_ID2 Node identifier 2.

(Integer)

  
Dmin Distance minimum.

Default = -1E30 (Real)

 [ m ]
Dmax Distance maximum.

Default = 1E30 (Real)

 [ m ]

Comments

  1. Sensors can be used to activate airbags, imposed forces, pressures, and fixed velocities.
  2. Sensors can be used to activate or deactivate these elements: brick, quad, shell, truss, beam, spring or 3N Shell with /ACTIV.
  3. For Sensor type DIST:
    • Nodal distance node_ID node_ID2 is defined as:

      Dmin < | node_ID node_ID2 | < Dmax

    • If Dmax is reached in traction (| node_ID node_ID2 | > Dmax) or Dmin is reached in compression (| node_ID node_ID2 | < Dmin) at time Tsensor, the sensor is then activated at time Tsensor:

      Tsensor = Tdelay + TR