Multi-scale wrinkling analysis of the inflated beam under bending

In this paper theoretical wrinkling analysis of the inflated beam was conducted and an experiment was then completed. The bending stiffness and load-deflection relationship in wrinkling condition were derived and then validated by experimental results. A comparative analysis of full shell, multi-scale and pseudo-beam on bending wrinkling of the inflated beam was performed. It was found that multi-scale method offered a considerable interest in computation efficiency while ensuring reliability in numerical simulation. Parametric analysis was done and showed that mesh coarseness, interface connection and the ration of full shell component have a strong influence on wrinkling analysis accuracy.