Secondary wrinkling analysis of rectangular membrane under shearing

• We propose the determination conditions of secondary wrinkling of membrane.
• We simulate the secondary wrinkling transition in membrane using MDC method.
• We elucidate the nature of secondary wrinkling in membrane.
• We test the secondary wrinkling of membrane using a non-contact DIC technology.
• The accuracy of determination conditions are verified by our simulations and experiments.

In this study, we first propose the determination conditions of secondary wrinkling based on which we may obtain the secondary wrinkling region and critical load for membrane structures. The nonlinear post-wrinkling simulation is then performed to evaluate the determination conditions, as well as elucidate the wrinkling nature based on secondary wrinkling behavior analysis. In the end, the secondary wrinkling characteristics are experimentally tested using the non-contact digital image correlation technology. The results reveal that the proposed determination conditions are validated by the simulation and experiments. The secondary wrinkling is a split of old wrinkle which drives the wrinkling evolution in post-wrinkling progress. Our results will be of great benefit to the analysis and the control of the wrinkles in the membrane structures.

The secondary wrinkling and its transition in simulation and experiment.Figure optionsDownload as PowerPoint slide