| Summary |
A defection behavior of the wrinkled membranes subjected to uniformly-distributed load was simulated using a geometrically nonlinear finite element analysis with MITC (Mixed Interpolation of Tensorial Components) shell element in order to investigate the effects of the wrinkling phenomena on the out-of-plane stiffness of the thin membranes. An analysis model was a square membrane, and wrinkling phenomena occurred due to in-plane shear were analyzed. Through the analysis, it is shown that the out-of-plane stiffness of the thin membranes drastically increases due to occurrence of the wrinkles. However, the effects of the wrinkling geometry on the increase of the stiffness were less than 10% of the total effects due to the wrinkling phenomena. From the results, it is clarified that the out-of-plane stiffness of the wrinkled membranes was significantly affected by the stress field of the wrinkled regions.
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