Processing math: 100%

/MONVOL/PRES

Block Format Keyword Describes the pressure load curve monitored volume type.

Format

(1) (2) (3) (4) (5) (6) (7) (8) (9) (10)
/MONVOL/PRES/monvol_ID/unit_ID
monvol_title
surf_IDex                  
Ascalet        
fct_ID Fscale   Itypfun          

Definitions

Field Contents SI Unit Example
monvol_ID Monitored volume identifier

(Integer, maximum 10 digits)

  
unit_ID Unit Identifier

(Integer, maximum 10 digits)

  
monvol_title Monitored volume title

(Character, maximum 100 characters)

  
surf_IDex External surface identifier.

(Integer)

  
Ascalet Abscissa scale factor for time based functions.

(Real)

 [s]
fct_ID Load curve identifier for relative pressure Prel(V0V) or Prel(t) depending on Itypfun input.

(Integer)

  
Fscale Load curve scale factor for relative pressure.

Default = 1.0 (Real)

 [Pa]
Itypfun Argument of the relative pressure function flag.
=0
Pressure depends on relative volume.
= 1
Pressure depends on time.

(Integer)

  

Comments

  1. The relative pressure is defined as, Prel = pressure inside of monitored volume - atmospheric pressure.
  2. surf_IDex must be defined using segments associated with 4- or 3-nodes shell elements (possibly void elements) and not with /SURF/SEG.
  3. The volume must be closed and the normals must be oriented outwards.
  4. Abscissa scale factors are used to transform abscissa units in airbag functions, for example:(1)
    F(t′)=fct_IDt=f(tAscalet)
    Where,
    t
    Time
    (2)
    F(P')=fct_IDP=f(PrelAscaleP)
    Where,
    Prel
    Relative pressure