Recent advances in the structual analysis of scientific balloons

Details Recent advances in the structual analysis of scientific balloons Recent advances in the structual analysis of scientific balloons

Feb 1994

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1994adspr..14...43s&link_type=abstract

Advances in Space Research (ISSN 0273-1177), vol. 14, no. 2, p. (2)43-(2)47

Computer Science

7

Balloons, Finite Element Method, Structural Analysis, Bending, Convergence, Stiffness, Thin Films

Scientific paper

The analysis of balloon envelopes by the finite element (FE) method is plagued by convergence problems. A pratical FE analysis approach is based on the fact that in thin shells with non-zero Gaussian curvature the membrane solution component is essentially decoupled from the bending solution component. A proxy-problem is solved by using a small artificial bending stiffness that assures convergence without significantly affecting the membrane solution component. This approach has been previously validated on slightly overpressurized balloon envelopes. Extensions of this approach to more difficult problems in the structural analysis of balloon envelopes are presented. The convergence forcing modelling measures are discussed. Implications of the findings of the analysis results to future balloon designs are also discussed.

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