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Finite element formulation for inflatable beams.

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Figure

Fig. 1. The inflated beam model.
Fig. 3. Buckling of an inflatable cantilever beam. Mesh convergence test.
Fig. 4. Critical load of a cantilever.  , inflatable beam finite element; ————, membrane finite element; —  —  —, crushing force F crushing given by relation (30).
Fig. 5. Pinched toroidal beam and the modeled quarter.
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