/SENSOR/SECT

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

Format

(1) (2) (3) (4) (5) (6) (7) (8) (9) (10)
/SENSOR/SECT/sens_ID/unit_ID
sens_title
Tdelay
sect_ID DIR Fmin Fmax Tmin

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 ]
sect_ID Section identifier.

(Integer, maximum 10 digits)

DIR Force direction.
blank
Activation at first force or moment
TF
Total Force
TM
Total Moment
FN
Normal Force
FT
Tangent Force
FX
Force in X direction
FY
Force in Y direction
FZ
Force in Z direction
MX
Moment in X direction
MY
Moment in Y direction
MZ
Moment in Z direction

(Integer)

Fmin Minimum force.

Default = 0 (Real, maximum 20 fields)

[ N ]
Fmax Maximum force.

Default = 0 (Real, maximum 20 fields)

[ N ]
Tmin Minimum time duration before activation when criteria is reached. 3

(Real)

[ s ]

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 SECT:
    Sensor is activated when section force satisfies the criteria:
    • F s e c t < F min or F s e c t > F max during Tmin
    Dir defines Force direction:
    TF
    Total Force
    TM
    Total Moment
    FN
    Normal Force
    FT
    Tangent Force
    FX
    Force in X direction
    FY
    Force in Y direction
    FZ
    Force in Z direction
    MX
    Moment in X direction
    MY
    Moment in Y direction
    MZ
    Moment in Z direction
  4. Values for force and moment component limits in the force-based sensors (SECT) can be positive and negative. Normal, tangent, total force and moment values are always positive.