Example 27 - Soccer ball

Hello,

I am putting together a model of a Basketball in RADIOSS and have been using Example 27 to set up the airbag inside. I am not clear on a couple of the options for the airbag and was wondering if anyone can explain some of the airbag options – specifically how the vents and jets are set up.

It appears that there is both a jet and vent defined for the soccer ball. I would like to model the airbag with a constant pressure and no jet/vent and I wanted to know if this is possible and how the soccer ball defined in example 27 is different from what I am looking for.

In addition, I am not sure how whoever set up the analysis came to the following terms in the airbag set up:

MU
GAMMA
cpa

cpb

cpc

Avent

BVent

Thanks,

Tim