Cumulative Analysis of Plastic Deformation of Curved Variable Thickness Cantilever Plate under Bending Load

As an important load-bearing structure in the field of mechanics, the known basic mechanical behavior of cantilever plate has been able to solve most of the engineering problems. However, the structural details and working environment of the sealing plate are much more complicated than that of the cantilever plate, which plays an important role in ensuring flight safety. In view of this, this paper is devoted to studying the plastic deformation accumulation mechanism of the sealing plate in practical engineering, so as to estimate its service life and optimize the maintenance cycle. The basic mechanical behavior of cantilever beam structure is introduced in this paper. Then, the influence of shape change on the plastic deformation of the cantilever plate is studied. Finally, the complex constraints and periodic loads are introduced into the cantilever plate structure to form the sealing plate model, and the mechanism of plastic deformation accumulation is illustrated.