/SENSOR/HIC

Block Format Keyword Describes the sensors used to activate or deactivate an object according to Head Injury Criteria (HIC).

Format

(1) (2) (3) (4) (5) (6) (7) (8) (9) (10)
/SENSOR/HIC/sens_ID/unit_ID
sens_title
Tdelay
accel_ID DIR
Period Value Gravity 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 ]
accel_ID Accelerometer identifier.

(Integer)
gauge_ID Gauge identifier.

(Integer)
DIR Force direction.
=R (Default)
Resultant
=X
X direction
=Y
Y direction
=Z
Z direction

(Integer)
Period Time window for the HIC.

Default = 0.036, [ s ] if in SI unit (Real)

 [ s ]
Value HIC limit value.

Default = 1E20 (Real)

 [ s ]
Gravity Time window for the HIC.

Default = 9.80665 [ m s 2 ] if in SI unit (Real)

 [ m s 2 ]
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 HIC, criteria is computed with:
    H I C P e r i o d = max { ( t 2 − t 1 ) [ 1 t 2 − t 1 ∫ t 1 t 2 a ( t ) . d t ] 5 2 } MathType@MTEF@5@5@+= feaagKart1ev2aaatCvAUfeBSjuyZL2yd9gzLbvyNv2CaerbuLwBLn hiov2DGi1BTfMBaeXatLxBI9gBaerbd9wDYLwzYbItLDharqqtubsr 4rNCHbGeaGqiVu0Je9sqqrpepC0xbbL8F4rqqrFfpeea0xe9Lq=Jc9 vqaqpepm0xbba9pwe9Q8fs0=yqaqpepae9pg0FirpepeKkFr0xfr=x fr=xb9adbaqaaeGaciGaaiaabeqaamaabaabaaGcbaGaamisaiaadM eacaWGdbWaaSbaaSqaaiaadcfacaWGLbGaamOCaiaadMgacaWGVbGa amizaaqabaGccqGH9aqpciGGTbGaaiyyaiaacIhadaGadaqaaiaacI cacaWG0bWaaSbaaSqaaiaaikdaaeqaaOGaeyOeI0IaamiDamaaBaaa leaacaaIXaaabeaakiaacMcadaWadaqaamaalaaabaGaaGymaaqaai aadshadaWgaaWcbaGaaGOmaaqabaGccqGHsislcaWG0bWaaSbaaSqa aiaaigdaaeqaaaaakmaapedabaGaamyyaiaacIcacaWG0bGaaiykai aac6cacaWGKbGaamiDaaWcbaGaamiDamaaBaaameaacaaIXaaabeaa aSqaaiaadshadaWgaaadbaGaaGOmaaqabaaaniabgUIiYdaakiaawU facaGLDbaadaahaaWcbeqaamaalaaabaGaaGynaaqaaiaaikdaaaaa aaGccaGL7bGaayzFaaaaaa@5F44@

    With ( t 2 − t 1 ) < P e r i o d MathType@MTEF@5@5@+= feaagKart1ev2aaatCvAUfeBSjuyZL2yd9gzLbvyNv2CaerbuLwBLn hiov2DGi1BTfMBaeXatLxBI9gBaerbd9wDYLwzYbItLDharqqtubsr 4rNCHbGeaGqiVu0Je9sqqrpepC0xbbL8F4rqqrFfpeea0xe9Lq=Jc9 vqaqpepm0xbba9pwe9Q8fs0=yqaqpepae9pg0FirpepeKkFr0xfr=x fr=xb9adbaqaaeGaciGaaiaabeqaamaabaabaaGcbaGaaiikaiaads hadaWgaaWcbaGaaGOmaaqabaGccqGHsislcaWG0bWaaSbaaSqaaiaa igdaaeqaaOGaaiykaiabgYda8iaadcfacaWGLbGaamOCaiaadMgaca WGVbGaamizaaaa@4296@ and a ( t ) = a c c e l e r a t i o n ( t ) g r a v i t y MathType@MTEF@5@5@+= feaagKart1ev2aaatCvAUfeBSjuyZL2yd9gzLbvyNv2CaerbuLwBLn hiov2DGi1BTfMBaeXatLxBI9gBaerbd9wDYLwzYbItLDharqqtubsr 4rNCHbGeaGqiVu0Je9sqqrpepC0xbbL8F4rqqrFfpeea0xe9Lq=Jc9 vqaqpepm0xbba9pwe9Q8fs0=yqaqpepae9pg0FirpepeKkFr0xfr=x fr=xb9adbaqaaeGaciGaaiaabeqaamaabaabaaGcbaGaamyyaiaacI cacaWG0bGaaiykaiabg2da9maalaaabaGaamyyaiaadogacaWGJbGa amyzaiaadYgacaWGLbGaamOCaiaadggacaWG0bGaamyAaiaad+gaca WGUbGaaiikaiaadshacaGGPaaabaGaam4zaiaadkhacaWGHbGaamOD aiaadMgacaWG0bGaamyEaaaaaaa@4E65@ .

    The sensor is activated when H I C P e r i o d > v a l u e MathType@MTEF@5@5@+= feaagKart1ev2aqatCvAUfeBSjuyZL2yd9gzLbvyNv2CaerbuLwBLn hiov2DGi1BTfMBaeXatLxBI9gBaerbd9wDYLwzYbItLDharqqtubsr 4rNCHbGeaGqiVu0Je9sqqrpepC0xbbL8F4rqGqFfpeea0xe9vq=Jb9 vqpeea0xd9q8qiYRWxGi6xij=hbba9q8aq0=yq=He9q8qiLsFr0=vr 0=vr0db8meaabaqaciGacaGaaeqabaWaaeaaeaaakeaacaWGibGaam ysaiaadoeadaWgaaWcbaGaamiuaiaadwgacaWGYbGaamyAaiaad+ga caWGKbaabeaakiabg6da+iaadAhacaWGHbGaamiBaiaadwhacaWGLb aaaa@4540@ after Tmin value.