This tutorial presents all the steps taken, to model a front impact analysis, starting from a FE double
box beam structure, to Pam-Crash 2G FE-model output.
The following steps will be described:
Input the pam-crash database containing the FE structure.
Obtain connectivity to the model by using PLINKs, TIED CONTACT, and RBODYs.
Verify Properties and Materials of different parts.
Add to the structure an additional mass.
Input a barrier.
Define the boundary conditions, the initial velocity and the gravity.
Define contacts.
Create Cross Sections.
Add some Time History Output Definitions.
Define all the control parameters.
Delete unused entities.
Perform checks to verify the integrity of the model.
Obtain information for the model.
Create and arrange includes.
Output the .pc file ready to be solved in Pam-Crash.

Reading the first -+4 pages of section 3. Getting Started of this Tutorial Guide, is recommended in
order to obtain a familiarization with the ANSA interface and terminology.
Also, read the chapters
14, 15, 16, 17, 18 of the ANSA User’s Guide, to obtain a familiarization with the general
terminology of pre-processing decks and in particular with the Pam-Crash one. Some basic
knowledge of the Pam-Crash Solver is also suggested.

Problem description
The structure consists of two double metal sheet parts connected along their flanges with mesh
independent connection elements (e.g. PLINKs). The two box beams are connected with a
cylindrical traverse in the middle of their length, while in the front are connected with a double
traverse structure. This assembly impacts on a rigid barrier with an initial velocity of 12 mm/ms to
the +X direction.


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