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FE Analysis of Membrane Systems Including Wrinkling and Coupling 103
coarse mesh – no wrinkling correction:
(a) Plot of Principal PK2 stresses (b) Deformed VS reference configuration
dense mesh – no wrinkling correction:
(a) Plot of Principal PK2 stresses (b) Deformed VS reference configuration
coarse mesh – wrinkling correction applied:
(a) Plot of Principal PK2 stresses (b) Deformed VS reference configuration
Fig. 1. Inflated Circular Airbag
Symmetry boundary conditions were applied and the problem was evaluated
with and without wrinkling algorithm. The sameairbag was simulated
using different meshes increasing progressively the mesh density. The results
reported here refer to a coarse mesh of 236 elements and to a denser one
of 4802 elements. For this example, a very dense mesh is needed to capture