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Reference Guide
This manual provides a detailed list of all the input keywords and options available in Radioss.
LS-DYNA Input
This manual provides a list of LS-DYNA input files available in Radioss.
*AIRBAG
*AIRBAG_LOAD_CURVE_ID
LS-DYNA Input Interface KeywordThis model defines a one-chambered airbag with pressure specified as function of time.

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Radioss^® is a leading explicit finite element solver for crash and impact simulation.
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This manual provides a detailed list of all the input keywords and options available in Radioss.
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  Current Radioss format uses the 12x extension format.
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  This format allows running either Starter or Engine with the same file.
- New Keywords in 2025
  New and modified features in Radioss.
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  This manual provides a list of all the model definition keywords and options available in Radioss.
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  This manual provides a list of all the solution definition keywords and options available in Radioss.
- LS-DYNA Input
  This manual provides a list of LS-DYNA input files available in Radioss.
  - *AIRBAG
    - *AIRBAG_ADIABATIC_GAS_MODEL_ID
      LS-DYNA Input Interface KeywordThis model defines a one-chambered airbag filed by adiabatic gas. Uniform pressure method is used.
    - *AIRBAG_LINEAR_FLUID_ID
      LS-DYNA Input Interface KeywordThis model defines a control volume filled with a liquid.
    - *AIRBAG_LOAD_CURVE_ID
      LS-DYNA Input Interface KeywordThis model defines a one-chambered airbag with pressure specified as function of time.
    - *AIRBAG_PARTICLE
      LS-DYNA Input Interface KeywordDefines a Finite Volume Method airbag.
    - *AIRBAG_SHELL_REFERENCE_GEOMETRY
      LS-DYNA Input Interface KeywordDefine the reference state for elements belonging to a part using given element and node identifiers with possible scaling for the nodes with defined scale center and scale factor.
    - *AIRBAG_SIMPLE_AIRBAG_MODEL
      LS-DYNA Input Interface KeywordThis model defines a one-chambered airbag with uniform pressure method, injected gas and vent hole.
    - *AIRBAG_SIMPLE_PRESSURE_VOLUME
      LS-DYNA Input Interface KeywordDescribes a one-chambered airbag with pressure as a function of volume.
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    LS-DYNA Input Interface KeywordDefine solid and hourglass formulation for 8-node solid elements.
  - *INCLUDE
  - *INITIAL
  - *INTEGRATION_SHELL
    LS-DYNA Input Interface KeywordDefine user-defined through the thickness integration rules for the composite shell element.
  - *KEYWORD
    LS-DYNA Input Interface KeywordThis keyword should always be the first card of the input file. Optionally used with *CONTROL_UNITS card to specify model units.
  - *LOAD
  - *MAT
  - *NODE
    LS-DYNA Input Interface KeywordDefines a node number and nodal coordinates in the global coordinate system.
  - *PART
    LS-DYNA Input Interface KeywordDefines a part, which combines material and property information.
  - *RIGIDWALL
  - *SECTION
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- Obsolete Keywords
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Theory Manual
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This manual describes the interface between Altair Radioss and user subroutines.

*AIRBAG_LOAD_CURVE_ID

LS-DYNA Input Interface KeywordThis model defines a one-chambered airbag with pressure specified as function of time.

Format


(1)	(2)	(3)	(4)	(5)	(6)	(7)	(8)
*AIRBAG_LOAD_CURVE_ID

If OPTION = ID, insert the following line


(1)	(2)	(3)	(4)	(5)	(6)	(7)	(8)
`monvol_ID`	`Title`


(1)	(2)	(3)	(4)	(5)	(6)	(7)	(8)
`surf_ID`_ex	`Surf_typ`
`STIME`	`LCID`

Definition


Field	Contents	SI Unit Example
`monvol_ID`	Airbag identifier. (Integer)
`Title`	Title. (Character)
`surf_ID`_ex	Airbag external surface identifier. (Integer)
`Surf_typ`	Set type. = 0 (Default) `surf_ID`_ex is a segment set. ≠ 0 `surf_ID`_ex is a set of parts. (Integer)
`STIME`	Time shift for pressure application. (Real)	$[s]$
`LCID`	Load curve ID for pressure versus time. (Real)

Comments

This keyword maps to /MONVOL/PRES.