Nonlinear Dynamic Characteristics and Resonant Actuation of Bi-stable Composite Laminates

Abstract

In the fields of morphing aircraft design, flow control and broadband energy harvesting, the dynamic characteristics of the multi-stable structure provide an idea for realizing the dynamic deformation of configurations. Its unique nonlinear characteristics and local strong stability provide an important theoretical basis and application value for the investigation of morphing structures. Taking asymmetric bi-stable composite laminates as the research object, this paper analyzes the effects of boundary conditions on the stable configurations and utilizes finite element simulation software ABAQUS to research the nonlinear dynamic characteristics of each configuration and its dynamic response under different excitation levels. By comparing two boundary conditions of cantilever and clamped at the center, the dynamic snap-through phenomena of bistable laminated panels are investigated, and the morphing strategies targeting modal frequencies need to be optimized.

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