*AIRBAG_SIMPLE_PRESSURE_VOLUME

LS-DYNA Input Interface KeywordDescribes a one-chambered airbag with pressure as a function of volume.

Format

(1) (2) (3) (4) (5) (6) (7) (8)
*AIRBAG_SIMPLE_PRESSURE_VOLUME_{OPTION}
If OPTION = ID, insert the following line.
(1) (2) (3) (4) (5) (6) (7) (8)
ID Title
(1) (2) (3) (4) (5) (6) (7) (8)
surf_IDex Surf_typ            
CN BETA            

Definition

Field Contents SI Unit Example
ID Airbag identifier.

(Integer)
Title Title.

(Character)
surf_IDex Airbag external surface identifier.

(Integer)
Surf_typ Set type.
≠ 0
Set of parts.
CN Pressure coefficient.
> 0
p r e s s u r e = B E T A * C N r e l a t i v e _ v o l u m e MathType@MTEF@5@5@+= feaagKart1ev2aqatCvAUfeBSjuyZL2yd9gzLbvyNv2CaerbuLwBLn hiov2DGi1BTfMBaeXatLxBI9gBaerbd9wDYLwzYbItLDharqqtubsr 4rNCHbGeaGqiVu0Je9sqqrpepC0xbbL8F4rqqrFfpeea0xe9Lq=Jc9 vqaqpepm0xbba9pwe9Q8fs0=yqaqpepae9pg0FirpepeKkFr0xfr=x fr=xb9adbaqaaeGaciGaaiaabeqaamaabaabaaGcbaGaamiCaiaadk hacaWGLbGaam4CaiaadohacaWG1bGaamOCaiaadwgacqGH9aqpdaWc aaqaaiaadkeacaWGfbGaamivaiaadgeacaGGQaGaam4qaiaad6eaae aacaWGYbGaamyzaiaadYgacaWGHbGaamiDaiaadMgacaWG2bGaamyz aiaac+facaWG2bGaam4BaiaadYgacaWG1bGaamyBaiaadwgaaaaaaa@5244@

Default =0 (Real)
BETA Pressure scale factor.

(Real)

 [ Pa ]

Comments

  1. This keyword maps to /MONVOL/PRES.
  2. Relative volume is defined as:(1)
    relative_volume= Current_volume Initial_volume MathType@MTEF@5@5@+= feaagKart1ev2aqatCvAUfeBSjuyZL2yd9gzLbvyNv2CaerbuLwBLn hiov2DGi1BTfMBaeXatLxBI9gBaerbd9wDYLwzYbItLDharqqtubsr 4rNCHbGeaGqiVu0Je9sqqrpepC0xbbL8F4rqqrFfpeea0xe9Lq=Jc9 vqaqpepm0xbba9pwe9Q8fs0=yqaqpepae9pg0FirpepeKkFr0xfr=x fr=xb9adbaqaaeGaciGaaiaabeqaamaabaabaaGcbaGaamOCaiaadw gacaWGSbGaamyyaiaadshacaWGPbGaamODaiaadwgacaGGFbGaamOD aiaad+gacaWGSbGaamyDaiaad2gacaWGLbGaeyypa0ZaaSaaaeaaca WGdbGaamyDaiaadkhacaWGYbGaamyzaiaad6gacaWG0bGaai4xaiaa dAhacaWGVbGaamiBaiaadwhacaWGTbGaamyzaaqaaiaadMeacaWGUb GaamyAaiaadshacaWGPbGaamyyaiaadYgacaGGFbGaamODaiaad+ga caWGSbGaamyDaiaad2gacaWGLbaaaaaa@5F4F@