Nonlinear dynamic instability of wrinkled film-substrate structure under axial load

To avoid structural failure, the issue of the dynamic reliability of a wrinkled-film-substrate structure has become one of the most key problems for the design of the film-substrate-type flexible electronics. In this paper, an improved theoretical model of such a structure with finite deformation is established, which takes the shear stress at the interface between the film and substrate into account. Post-buckling mode would take place when...