PAM-CRASH 2G Interface

Overview of the PAM-CRASH 2G interface.

HyperWorks X provides a complete pre-processing environment for preparing PAM-CRASH 2G data decks for analysis. HyperWorks X can read existing PAM-CRASH 2G decks, create a model, display and edit PAM-CRASH 2G cards as they will look in the deck, and write a deck for analysis. Although HyperWorks X also offers limited post-processing capabilities in results translation you are encouraged to exclusively use HyperView. To create PAM-CRASH 2G decks in HyperWorks X, you must load the Pamcrash2G user profile with the appropriate template to access the full pre-processing capability.

Import and Export

PAM-CRASH 2G version 2012 - 2017.
The Pamcrash2G input translator also supports reading older Pamcrash2G files 2002 - 2011 and map into the loaded template.
Pamcrash and Pamcrash2G 2002 - 2011 templates are available in the installation and can be loaded. However they are no longer maintained.
During import all the GES associated with the solver keywords are mapped to entity sets in HyperWorks X and associated with the solver entity. They are exported back as GES during export.

In addition to the custom export options available in the Export Browser, several templates are available to export specific solver entities only.

Table 1.
Template Name	Description
control_modeldoc	Exports only the model documentation.
ctrlvol	Exports only the airbag and chamber definitions.
groups_nsmas	Exports only the non-structural mass cards.
groups_rigwa	Exports only the rigid wall cards.
groups_slint	Exports only the sliding interface cards.
crosssection	Exports only the cross section cards.
load	Exports only the load and load collector cards.
materials	Exports only the material cards.
property	Exports only the property cards.
sensor	Exports only the sensor cards.
sets	Exports only the PAM-CRASH 2G groups.
curves	Exports only the function cards.
parts	Exports only the part cards.

Mass Calculations

The mass of each element is calculated by density * volume. Density is retrieved from the material associated with the element’s component. Several assumptions are made in mass calculation based on PAM-CRASH 2G solver.
For rigid bodies (RBODY) of type 3 with a user-imposed center of gravity and mass and inertia properties, the structural mass of the PART components are replaced by the rigid body mass. All other keywords besides the PART keyword are neglected in the RBODY type 3 mass calculation.
The following table summarizes how each supported element except shells and solid in the HyperWorks X PAM-CRASH 2G interface performs these calculations:

PAM-CRASH 2G Keyword	Volume	Mass	Notes
MASS /	0	$M = \sqrt{M_{x}^{2} + M_{y}^{2} + M_{z}^{2}}$
SLIPR /	0	0
RETRA /	0	0
SENPT /	0	0
PLINK /	0	0
RBODY /	0	$RBODY_MASS	Rigid body type 3.
NODCO /	0	0
SPRING /	0		Material type 220.
SPRGBM /	0		Material type 223.
BAR /	$\begin{array}{l} V = A_{b a r} * L e n g t h \\ V_{205} = 0.0 \end{array}$	$\begin{array}{l} M = p * V \\ M_{205} = L e n g t h * \frac{M a s s}{L e n g t h} \end{array}$	Material types 200, 201, 202, 203, 204, and 205.
JOINT /	0	0
KJOIN /	0	0
NSMAS	0	MASS	Non-Structural Mass Definition - Standard Input Format
NSMAS2	0	MASS / MLEN /MARE / MVOL	Non-Structural Mass Definition - Alternate Mass Distribution Method