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FE mesh generation for folded airbags
This work presents the results of a novel approach to
obtaining a geometric mesh of a given airbag after a series of
folds are defined on it, for use in crash simulations. The
process of airbag folding is simulated as a series of
geometric transformations applied on to the airbag mesh, which
is modeled as a stack of connected planar layers. Along with
these transformations, optimization techniques are used to
ensure that there is minimum change in the geometry and the
area of the airbag. The results from this approach are
compared with several other commercial airbag folding
software, and it is observed that the algorithm proves to be
very effective in ensuring minimum change in the area and
geometry of the airbag during the folding process.
This project was aimed at developing a software for folding
airbags which would lead to minimum changes in the geometry
and area of the airbag.
figure 1 shows an airbag inflated after being folded by own
technique. the % change in area was -.1% & in volume -1.4% .On
the other hand figure 2 shows the result obtained from the
folding technique available in RAM CRASH . The % change in
area -30% and in volume -20%
Fig 1:Airbag inflated after folding from Our Algorithm
(S.
Mukherjee et al.,2004)
(Change in Area – 0.1%, Volume – 1.4%)
Fig 2:Airbag inflated after folding is PAM CRASH
(S.
Mukherjee et al.,2004)
(Change in Area – 30%, Volume –20%)
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