Analysis of vibration behavior of shear wrinkling membrane

First, oscillatory differential equation with wrinkle membrane is established based on Lagrange equation and analysis flow of membrane dynamic characteristics is set up by FE program, and then post-buckling dynamic characteristics of rectangle shear membrane are studied. Results indicate that the post-buckling vibration modal of rectangle shear membrane has great correlation with wrinkle configuration. The position of vibration pitch line gets along with the position of wrinkle wave crest. With the increasing of mode number, the number of vibration pitch line is reduced sequentially, and more wrinkle waves crest at the state of vibration. At high order mode, local vibration is presented at the edge of membrane. As shear distance increased, the amplitude of membrane wrinkle is enlarged, and oscillatory variety takes place in natural frequency. The natural frequency is obviously reduced after buckling.