Host: The Japan Society of Mechanical Engineers
Name : [in Japanese]
Date : November 02, 2019 - November 04, 2019
We study how the finite thickness of the substrate of elastic bilayer affects its surface instability characterized by the critical stretch and wavelength. Based on the incremental deformation theory, we formulate the linear stability problem and numerically determine the critical conditions at the wrinkling threshold. We found that the finite thickness decreases the critical stretch and increase the wavenumber. These results provide the possibility to control the wavelength of wrinkling by tuning the thickness ratio between film and substrate.
