Nonlinear Geometric Effects in Mechanical Bistable Morphing Structures

作者：Chen, Zi^*; Guo, Qiaohang; Majidi, Carmel; Chen, Wenzhe; Srolovitz, David J.; Haataja, Mikko P.

来源：Physical Review Letters, 2012, 109(11): 114302.

DOI：10.1103/PhysRevLett.109.114302

• THIN
• SHELLS
• DEFORMATION
• ELECTRONICS
• INSTABILITY
• SHAPES
• MODELS
• SHEETS

Bistable structures associated with nonlinear deformation behavior, exemplified by the Venus flytrap and slap bracelet, can switch between different functional shapes upon actuation. Despite numerous efforts in modeling such large deformation behavior of shells, the roles of mechanical and nonlinear geometric effects on bistability remain elusive. We demonstrate, through both theoretical analysis and tabletop experiments, that two dimensionless parameters control bistability. Our work classifies the conditions for bistability, and extends the large deformation theory of plates and shells.

• 出版日期2012-9-14
• 单位福建工程学院; 福州大学