/SENSOR/RBODY

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

Format

(1) (2) (3) (4) (5) (6) (7) (8) (9) (10)
/SENSOR/RBODY/sens_ID/unit_ID
sens_title
Tdelay
rbody_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 ]
rbody_ID Rigid body identifier.

(Integer, maximum 10 digits)

DIR Force direction.
blank
Activation at first force or moment
=TF
Total Force
= TM
Total Moment

(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.

(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 RBODY:
    Sensor is activated when the force in the rigid body satisfies the criteria:
    • F R B O D Y < F min MathType@MTEF@5@5@+= feaagKart1ev2aqatCvAUfeBSjuyZL2yd9gzLbvyNv2CaerbuLwBLn hiov2DGi1BTfMBaeXatLxBI9gBaerbd9wDYLwzYbItLDharqqtubsr 4rNCHbGeaGqiVu0Je9sqqrpepC0xbbL8F4rqqrFfpeea0xe9Lq=Jc9 vqaqpepm0xbba9pwe9Q8fs0=yqaqpepae9pg0FirpepeKkFr0xfr=x fr=xb9adbaqaaeGaciGaaiaabeqaamaabaabaaGcbaGaamOramaaBa aaleaacaWGsbGaamOqaiaad+eacaWGebGaamywaaqabaGccqGH8aap caWGgbWaaSbaaSqaaiGac2gacaGGPbGaaiOBaaqabaaaaa@3FDE@ or F R B O D Y > F max MathType@MTEF@5@5@+= feaagKart1ev2aqatCvAUfeBSjuyZL2yd9gzLbvyNv2CaerbuLwBLn hiov2DGi1BTfMBaeXatLxBI9gBaerbd9wDYLwzYbItLDharqqtubsr 4rNCHbGeaGqiVu0Je9sqqrpepC0xbbL8F4rqqrFfpeea0xe9Lq=Jc9 vqaqpepm0xbba9pwe9Q8fs0=yqaqpepae9pg0FirpepeKkFr0xfr=x fr=xb9adbaqaaeGaciGaaiaabeqaamaabaabaaGcbaGaamOramaaBa aaleaacaWGsbGaamOqaiaad+eacaWGebGaamywaaqabaGccqGH+aGp caWGgbWaaSbaaSqaaiGac2gacaGGHbGaaiiEaaqabaaaaa@3FE4@ during Tmin
    Dir defines Force or Moment output to monitor:
    TF
    Total Force
    TM
    Total Moment