Control Volumes
Control volume entities define and store control volumes typically used in safety analysis.
Control volumes do not have a display state.
LS-DYNA Cards
Use the Control Volume panel to control volume objects within a model. The *AIRBAG_OPTION card is output from this panel. The POP option is supported for WANG_NEFSKE options.
| Card | Description |
|---|---|
| *AIRBAG_ADIABATIC_GAS_MODEL_ID | Define an airbag or control volume |
| *AIRBAG_ADVANCED_ALE | *DEFINE_ALEBAG_BAG, *DEFINE_ALEBAG_HOLE, and *DEFINE_ALEBAG_INFLATOR to define ALE type AIRBAG in modular way. |
| *AIRBAG_ALE | Provides a simplified approach to defining the deployment of the airbag using the ALE capabilities with an option to switch from the initial ALE method to control volume method at a chosen time. |
| *AIRBAG_HYBRID_CHEMKIN_ID | Define an airbag or control volume |
| *AIRBAG_HYBRID_ID | Define an airbag or control volume |
| *AIRBAG_HYBRID_JETTING_ID | |
| *AIRBAG_HYBRID_JETTING_CM_ID | |
| *AIRBAG_INTERACTION_ID | Define two connected airbags which vent into each other |
| *AIRBAG_LINEAR_FLUID_ID | |
| *AIRBAG_LOAD_CURVE_ID | |
| *AIRBAG_PARTICLE | To define an airbag using the particle method. |
| *AIRBAG_REFERENCE_GEOMETRY_BIRTH | If the reference configuration of the airbag is taken as the folded configuration, the geometrical accuracy of the deployed bag will be affected by both the stretching and the compression of elements during the folding process. |
| *AIRBAG_REFERENCE_GEOMETRY_BIRTH_RDT | |
| *AIRBAG_REFERENCE_GEOMETRY_RDT | |
| *AIRBAG_SHELL_REFERENCE_GEOMETRY | |
| *AIRBAG_SIMPLE_AIRBAG_MODEL_ID | |
| *AIRBAG_SIMPLE_PRESSURE_VOLUME_ID | |
| *AIRBAG_WANG_NEFSKE_ID | |
| *AIRBAG_WANG_NEFSKE_JETTING_ID | |
| *AIRBAG_WANG_NEFSKE_JETTING_CM | |
| *AIRBAG_WANG_NEFSKE_JETTING_POP_ID | |
| *AIRBAG_WANG_NEFSKE_JETTING_POP_CM | |
| *AIRBAG_WANG_NEFSKE_MULTIPLE_JETTING_CM_ID | |
| *AIRBAG_WANG_NEFSKE_MULTIPLE_JETTING_ID | |
| *AIRBAG_WANG_NEFSKE_MULTIPLE_JETTING_POP_CM_ID | |
| *AIRBAG_WANG_NEFSKE_MULTIPLE_JETTING_POP_ID | |
| *AIRBAG_WANG_NEFSKE_POP_ID | |
| *DEFINE_ALEBAG_BAG | Defines the surface that constitutes the airbag's outer surface for ALE airbag. |
| *DEFINE_ALEBAG_HOLE | Defines the surface that constitutes the vents for ALE airbag. |
| *DEFINE_ALEBAG_INFLATOR | Defines the inflator for ALE airbag. |
| *DEFINE_CPM_BAG_INTERACTION | Allows interaction between two particle bags. |
| *DEFINE_CPM_CHAMBER | Defines airbag chambers for air particle initialization or chamber interaction. |
| *DEFINE_CPM_GAS_PROPERTIES | Defines extended gas thermodynamic properties. |
| *DEFINE_CPM_VENT | Defines extended vent hole options. |
| *INITIAL_FOAM_REFERENCE_GEOMETRY | The reference configuration allows stresses to be initialized in the following hyperelastic material models: 2, 7, 21, 23, 27, 31, 38, 57, 73, 83, 132 and 181. |
PAM-CRASH Cards
| Card | Description |
|---|---|
| BAGIN | Airbag definition |
| CHAMBER | Multiple chamber definitions |
| END_BAGIN | Terminates the whole general airbag definition |
| END_CHAMBER | Ends each chamber description |
| EXT_SKIN | Chamber outer skin elements Note: Sub-keyword of
CHAMBER |
| FPM | FPM definition card Note: Sub-keyword of
BAGIN |
| FPM_HOLE | Hole for SPHCEL Note: Sub-keyword of CHAMBER |
| GAS | Chamber GAS definition Note: Sub-keyword of BAGIN Sub-keyword of CHAMBER |
| GEN_INI_COND | Chamber gas initial condition Note: Sub-keyword of
BAGIN |
| INFLATOR | Airbag inflator definition Note: Sub-keyword of
CHAMBER |
| INI_COND | Initial condition of gas Note: Sub-keyword of
CHAMBER |
| JET | Jet definition Note: Sub-keyword of CHAMBER |
| LEAKAGE | Vents and holes definition in airbag Note: Sub-keyword of
CHAMBER |
| LOCAL_H | FPM - Local smoothing length card Note: Sub-keyword of
BAGIN |
| WALL_FABRIC | Define chamber wall fabric Note: Sub-keyword of
CHAMBER |
| WALL_OPENING | Chamber wall opening Note: Sub-keyword of
CHAMBER |
Radioss Cards
| Card | Description |
|---|---|
| /MONVOL | Describes the monitored volume types. Note: Block Format Keyword |
| /MONVOL/AIRBAG1 | Describes one-chambered airbag with hybrid
input of injected gas. This keyword is similar to /MONVOL/AIRBAG
(Obsolete), but has more flexible input. Note: Block Format Keyword |
| /MONVOL/AREA | Describes the monitored volume type
AREA. Note: Block Format Keyword |
| /MONVOL/COMMU1 | Describes multi-chambered airbag with hybrid
input of injected gas. This keyword is similar to obsolete keyword
/MONVOL/COMMU, but has more flexible input. Note: Block Format Keyword |
| /MONVOL/FVMBAG1 | Describes Finite Volume Method Airbag, which
has more flexible input than the similar obsolete keyword
/MONVOL/FVMBAG. Note: Block Format Keyword |
| /MONVOL/GAS | Describes the perfect gas monitored volume
type. Note: Block Format Keyword |
| /MONVOL/PRES | Describes the pressure load curve monitored volume
type. Note: Block Format Keyword |
| /REFSTA | Describes the reference state for elements belonging to
a part, using given nodal coordinates. Note: Block Format Keyword You need to create a new include file, set the include file type as REFSTA and create this card in the include file. |