Finite Element Analysis of Wrinkle Patterns on Electroactive Cellulose Films Induced by Mechanical Stretching

초록

A finite element analysis is presented to investigate wrinkle patterns in electroactive cellulose films, which were induced by mechanical stretching with tensile strain, lateral strain, and misalignment angle. As the tensile strain increased with a constant lateral stain, electroactive cellulose film showed weak wrinkles with low magnitudes in the beginning and, thereafter, fully-developed wrinkles with the wavelength decreased. As the lateral strain increased with a constant tensile stain, the wavelength of wrinkles increased because of the strong effect of bending. Contrarily, as the tensile strain increased with a constant misalignment angle, electroactive cellulose film showed inclined wrinkles in all of the cases. As the magnitude of the wrinkles increased along with the tensile strain. As the misalignment angle increased with a constant tensile stain, three types of wrinkles- small, locally-distributed, fully-developed wrinkles-were observed in order. © 2018 The Korean Society of Mechanical Engineers.

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