Airbag Impact Setup

Purpose:

To create generic linear impact model that even non-CAE engineers can use to run studies.

Six files needed for input.

1. Master file : The first level file with five included files.

2. Airbag file : The airbag file with "pab" in the file name.

3. Inflator file : The inflator file with "inflator" in the file name.

4. Impactor file : the impactor file with "impactor" in the file name.

5. Windshield file : the windshield file with "windshield" in the file name.

6. Test Fixture file : the test fixture file with "test_fixture" in the file name.

With this application, user can make basic changes, such as airbag location and angle, tether length, impactor mass and velocity. Or replace certain component with new one. Or output the modified model. Or run LS-Dyna with the modified model as input. Or plot the result.

Function:

Setup: Overall setup

1. Component assignment.

2. Output directory.

3. Solver path.

4. Parameter to run solver.

5. Plot template setting

Modify: Four kinds of modification allowed.

1. Component replacement.

2. Location and angle adjustment.

3. Other parameters adjustment.

4. Kinematic curve display and replacement.

Output: Write a copy of model to output directory.

Run: All in one button.

1. If not outputed, it will output a copy of model.

2. Submit model to solver.

3. Reading result and plot according to template

Post: Plot impactor response curves.

Sample:

Sample : show how AIMS work.

Setup:

  • Master Folder : Where the model files are.

  • Airbag : The airbag file.

  • Inflator : The inflator file.

  • Impactor : The impactor file.

  • Windshield : the windshield file.

  • Test Fixture : the test fixture file.

  • Advance : Show advance option.

  • Output Directory : Setup the output path for K file and d3plot.

  • Choose Solver : Setup where the solver is.

  • Number of CPU : Setup the cpu parameter for LS-Dyna.

  • Memory Size : Setup the memory parameter for LS-Dyna.

  • Default : Use default post template to plot the result.

  • Command File : For advance user only. use given command file to plot the result.

Modify:

Use airbag setup as an example. The rest, such as Inflator, Impactor, Winshield, Test Fixture and Control, are similar with this tab.

Browse : Browse a new airbag file to replace current one.

X : Translate airbag in X from its current position

Y : Translate airbag in Y from its current position

Z : Translate airbag in Z from its current position

Module Angle : Rotate airbag about Y axis.

Effective Length : Un-stretched length of tether set to a large value to simulate no tether.

Plot : Plot fabric permeability curve x: gauge pressure (Pa) y: dynamic permeability (m/s).

Replace : Replace fabric permeability curve x: gauge pressure (Pa), y: dynamic permeability (m/s).

Setup : See Function Segment.

Output : See Function Segment.

Run : See Function Segment.

Post : See Function Segment.

Anim : Switch between plot result and d3plot result.

Done : Exit AIMS interface.