Nonlinear pull-in analysis of LASMP laminated micro-plate considering micro-scale effect

Abstract

This research concentrates on pull-in behavior of a micro-plate laminated with a novel material: light activated shape memory polymer (LASMP). Under light exposure, this material can realize dynamic Young’s modulus. With this feature, a LASMP laminated micro-plate model considering micro-scale effect and geometric nonlinearity is proposed. Dynamic equations of the micro-plate system are derived via Hamilton principle and solved by Galerkin method whose accuracy is validated by FEM. Effect of size dependency and dynamic Young’s modulus of LASMP on pull-in behavior of the micro-plate are studied. Present study provided a technique to manipulate pull-in phenomenon of electrically actuated micro-plate.

Keywords:

• Pull-in
• microplate
• nonlinearity
• LASMP

Additional information

Funding

This work was supported by Founding for school-level research projects of Yancheng Institute of Technology (grant NO.154203635).