基于多稳态的智能可调表面设计及仿真分析

By Integrating the snap-through characteristics of multistable structures and shape memory smart materials, a smart tunable surface design based on multistable structures is proposed. First, the mechanically driven snap-through behavior of bistable cosine-shaped beam unit is studied. Then the shape memory polymer material is introduced into the cosine-shaped beam unit to realize the smart driven snap-through of bistable structure?and the influence of bracket thickness of cosine-shaped beam on the snap-through behavior is studied. Based on the cosine beam unit cell, a saddle-shaped cosine beam unit cell is developed. By tuning the bracket thickness, the success or failure of shape memory snap-through behavior of the unit cell can be influenced. Based on the idea of " pixel imaging", combined with the tunable shape memory snap-through characteristics of the saddle cosine-shaped beam structure units, the design strategy of customizable surfaces is realized. Finally, the design effectiveness of " HIT" and "'Greek Text'" (meaning force in Chinese ) smart tunable surfaces is verified by finite element simulation analysis.